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Found 85 results

  1. Cretaceous tooth

    Last Sunday I stopped at an outcrop of the Maastrictian (late Cretaceous) Prairie Bluff Chalk in western Alabama. About 3 meters below the top of the formation I encountered this tooth. It was definitely in situ, I had to chisel it out. It's 2.1 cm long, 1.6 cm wide at the base, and 0.7 cm thick at the base (so quite flat). Despite some cracking the tooth is not distorted, it is actually flattened not compressed during fossilization. One face is almost flat, and the other is curved. Both sides are serrated until very close to the tip; there are 5-6 serrations/mm. I have an idea of what this tooth is, or what I want it to be, but I have never collected one before so I'd like to get more experienced opinions. One thing that is confusing about this, the Prairie Bluff is a fully marine formation, deposited well offshore in moderately deep water. Associated fauna included a diverse array of marine bivalves, gastropods, echinoids, cephalopods (heteromorph ammonites including baculitids, Hoploscaphites, Discoscaphites, and Diplomoceras, as well as coiled nautiloids), and very scarce shark teeth, so it was definitely a fully marine environment. So, what do y'all think? Don
  2. A very rare new discovery: The North Carolina Museum of Natural Sciences reported today that a clutch of oviraptorosaur eggs was found in the San Rafael Swell of Utah. It was a first for the North American continent since these ars typically found in Asia. NC Museum release with video http://naturalsciences.org/calendar/news/rare-dinosaur-eggs-discovered-by-n-c-museum-of-natural-sciences-paleontologist/ @HamptonsDoc @-Andy-
  3. Tyrannosaurus Rex Tooth? ID

    Hi everyone, I am new to fossils and have got hold of a Tyrannosaurus Rex from someone I know. The tooth was found in Hell Creek Formation, Faith, South Dakota USA and is 2.5 inches in length and the teeth itself is really heavy (pics attached). Let me know if you need me to take clearer photos of serrations as it is quite hard as my camera's macro focus doesn't work very well. As you can see from the pics this teeth has some surface wear to the enamel and serrations... Serrations worn may have been from feed wear. Please can you help me identify if its from the Tyrannosaurus Rex as opposed to one of the members like the Nanotyrannosaurus or Carcharodontosaurus? Thank you! Jai
  4. A very brief article about the "Chicken from Hell" Anzu wyliei found in the Hell Creek Formation. Added some of my photos to get a better view of this cool Dinosaur. Carnegie Museum Article http://carnegiemuseumnaturalhistory.tumblr.com/post/165688152585/anzu-wyliei-perhaps-better-known-by-its-colorful/amp?__twitter_impression=true 5 feet high at the hips. Hand Claws reached 7 inches long
  5. Documented in this paper is baby hadrosaur that represents the first occurrence of an articulated nestling dinosaur skeleton from the latest Cretaceous (late Maastrichtian) of North America. It's from the Hell Creek of Montana, Garfield County. Edmontosaurus annectens Red... Scapula Purple.. Vert column Green..Pubis Blue.. Femur & Tibia Journal of Vertebrate Paleontology. ....Paywalled for non members.. A nestling-sized skeleton of Edmontosaurus(Ornithischia, Hadrosauridae) from the Hell Creek Formation of northeastern Montana, U.S.A., with an analysis of ontogenetic limb allometry Mateusz Wosik,Mark B. Goodwin &David C. Evans http://www.tandfonline.com/doi/abs/10.1080/02724634.2017.1398168?journalCode=ujvp20#.Wog2CXWObFg.twitter
  6. Looks like students of UNLV found bones of dinosaur which are now being studied by the Las Vegas Natural History Museum. The bones appear to be that of a hadrosaur and if named would be a first for Nevada News report attached and check out video in that report http://news3lv.com/news/local/new-dinosaur-species-discovered-in-valley-of-fire
  7. Bird bones in flint- please help to confirm

    Dear Guys, I recently collected three examples of interesting small bones that have the cavities in the same area, I found them in flint erratics of South Lithuania. One scientist (Jens Koppka) told be that one time the occasional bird bone in flint was found by his colleagues in Lithuania. I recenly found the link with very similar shape of bone known as Enantiophoenix in the middle picture of one publication that I share with you now : https://peerj.com/articles/1032/ Open this link and look for "Comparison of scapulocoracoid between the dromaeosaurid Balaur and other paravians", the cavity in the second scapulocoracoid picture is named as "snf". Please look at my fossil pictures and this link and help with confirmation if you could. Best Regards Domas
  8. dinosaur vertebrea

    Hello, I came across this piece in a rock/fossil shop during a recent road trip. It was labeled as unidentified dinosaur vertebrae - late Cretaceous 66 million years ago - from the Fort Crittenden Formation in Arizona. I bought it because it's an interestingly shaped piece - any thoughts or ideas? Neck, tail, or back? Thank you for your help.
  9. Inoceramus Bivalves 1 side a.JPG

    From the album MY FOSSIL Collection - Dpaul7

    Inoceramus Bivalves SITE LOCATION: West Point, Nebraska, USA TIME PERIOD: Late Cretaceous (75-100 Million Years Ago) Data: Inoceramus (Greek: translation "strong pot") is an extinct genus of fossil marine pteriomorphian bivalves that superficially resembled the related winged pearly oysters of the extant genus Pteria. They lived from the Early Jurassic to latest Cretaceous. The taxonomy of the inoceramids is disputed, with genera such as Platyceramus sometimes classified as subgenus within Inoceramus. Also the number of valid species in this genus is disputed. Inoceramids had a thick shell paved with "prisms" of calcite deposited perpendicular to the surface, which gave it a pearly luster in life. Most species have prominent growth lines which appear as raised semicircles concentric to the growing edge of the shell. Paleontologists suggest that the giant size of some species was an adaptation for life in the murky bottom waters, with a correspondingly large gill area that would have allowed the animal to survive in oxygen-deficient waters. Kingdom: Animalia Phylum: Mollusca Class: Bivalvia Order: †Praecardioida Family: †Inoceramidae Genus: †Inoceramus
  10. Inoceramus Bivalves 1 side a.JPG

    From the album MY FOSSIL Collection - Dpaul7

    Inoceramus Bivalves SITE LOCATION: West Point, Nebraska, USA TIME PERIOD: Late Cretaceous (75-100 Million Years Ago) Data: Inoceramus (Greek: translation "strong pot") is an extinct genus of fossil marine pteriomorphian bivalves that superficially resembled the related winged pearly oysters of the extant genus Pteria. They lived from the Early Jurassic to latest Cretaceous. The taxonomy of the inoceramids is disputed, with genera such as Platyceramus sometimes classified as subgenus within Inoceramus. Also the number of valid species in this genus is disputed. Inoceramids had a thick shell paved with "prisms" of calcite deposited perpendicular to the surface, which gave it a pearly luster in life. Most species have prominent growth lines which appear as raised semicircles concentric to the growing edge of the shell. Paleontologists suggest that the giant size of some species was an adaptation for life in the murky bottom waters, with a correspondingly large gill area that would have allowed the animal to survive in oxygen-deficient waters. Kingdom: Animalia Phylum: Mollusca Class: Bivalvia Order: †Praecardioida Family: †Inoceramidae Genus: †Inoceramus
  11. Inoceramus Bivalves 1 side a.JPG

    From the album MY FOSSIL Collection - Dpaul7

    Inoceramus Bivalves SITE LOCATION: West Point, Nebraska, USA TIME PERIOD: Late Cretaceous (75-100 Million Years Ago) Data: Inoceramus (Greek: translation "strong pot") is an extinct genus of fossil marine pteriomorphian bivalves that superficially resembled the related winged pearly oysters of the extant genus Pteria. They lived from the Early Jurassic to latest Cretaceous. The taxonomy of the inoceramids is disputed, with genera such as Platyceramus sometimes classified as subgenus within Inoceramus. Also the number of valid species in this genus is disputed. Inoceramids had a thick shell paved with "prisms" of calcite deposited perpendicular to the surface, which gave it a pearly luster in life. Most species have prominent growth lines which appear as raised semicircles concentric to the growing edge of the shell. Paleontologists suggest that the giant size of some species was an adaptation for life in the murky bottom waters, with a correspondingly large gill area that would have allowed the animal to survive in oxygen-deficient waters. Kingdom: Animalia Phylum: Mollusca Class: Bivalvia Order: †Praecardioida Family: †Inoceramidae Genus: †Inoceramus
  12. Inoceramus Bivalves 1 side a.JPG

    From the album MY FOSSIL Collection - Dpaul7

    Inoceramus Bivalves SITE LOCATION: West Point, Nebraska, USA TIME PERIOD: Late Cretaceous (75-100 Million Years Ago) Data: Inoceramus (Greek: translation "strong pot") is an extinct genus of fossil marine pteriomorphian bivalves that superficially resembled the related winged pearly oysters of the extant genus Pteria. They lived from the Early Jurassic to latest Cretaceous. The taxonomy of the inoceramids is disputed, with genera such as Platyceramus sometimes classified as subgenus within Inoceramus. Also the number of valid species in this genus is disputed. Inoceramids had a thick shell paved with "prisms" of calcite deposited perpendicular to the surface, which gave it a pearly luster in life. Most species have prominent growth lines which appear as raised semicircles concentric to the growing edge of the shell. Paleontologists suggest that the giant size of some species was an adaptation for life in the murky bottom waters, with a correspondingly large gill area that would have allowed the animal to survive in oxygen-deficient waters. Kingdom: Animalia Phylum: Mollusca Class: Bivalvia Order: †Praecardioida Family: †Inoceramidae Genus: †Inoceramus
  13. Inoceramus Bivalves 1 side a.JPG

    From the album MY FOSSIL Collection - Dpaul7

    Inoceramus Bivalves SITE LOCATION: West Point, Nebraska, USA TIME PERIOD: Late Cretaceous (75-100 Million Years Ago) Data: Inoceramus (Greek: translation "strong pot") is an extinct genus of fossil marine pteriomorphian bivalves that superficially resembled the related winged pearly oysters of the extant genus Pteria. They lived from the Early Jurassic to latest Cretaceous. The taxonomy of the inoceramids is disputed, with genera such as Platyceramus sometimes classified as subgenus within Inoceramus. Also the number of valid species in this genus is disputed. Inoceramids had a thick shell paved with "prisms" of calcite deposited perpendicular to the surface, which gave it a pearly luster in life. Most species have prominent growth lines which appear as raised semicircles concentric to the growing edge of the shell. Paleontologists suggest that the giant size of some species was an adaptation for life in the murky bottom waters, with a correspondingly large gill area that would have allowed the animal to survive in oxygen-deficient waters. Kingdom: Animalia Phylum: Mollusca Class: Bivalvia Order: †Praecardioida Family: †Inoceramidae Genus: †Inoceramus
  14. Petrified Wood - Nebraska 1.JPG

    From the album MY FOSSIL Collection - Dpaul7

    Petrified Wood SITE LOCATION: West Point, Cumings, Co., Nebraska, USA TIME PERIOD: Late Cretaceous (75-100 Million Years Ago) Data: Lake Superior Agate - Petrified wood (from the Greek root petro meaning "rock" or "stone"; literally "wood turned into stone") is the name given to a special type of fossilized remains of terrestrial vegetation. It is the result of a tree or tree-like plants having completely transitioned to stone by the process of permineralization. All the organic materials have been replaced with minerals (mostly a silicate, such as quartz), while retaining the original structure of the stem tissue. Unlike other types of fossils which are typically impressions or compressions, petrified wood is a three-dimensional representation of the original organic material. The petrifaction process occurs underground, when wood becomes buried under sediment or volcanic ash and is initially preserved due to a lack of oxygen which inhibits aerobic decomposition. Mineral-laden water flowing through the covering material deposits minerals in the plant's cells; as the plant's lignin and cellulose decay, a stone mold forms in its place. The organic matter needs to become petrified before it decomposes completely. A forest where such material has petrified becomes known as a petrified forest. Kingdom: Plantae
  15. Petrified Wood - Nebraska 1.JPG

    From the album MY FOSSIL Collection - Dpaul7

    Petrified Wood SITE LOCATION: West Point, Cumings, Co., Nebraska, USA TIME PERIOD: Late Cretaceous (75-100 Million Years Ago) Data: Lake Superior Agate - Petrified wood (from the Greek root petro meaning "rock" or "stone"; literally "wood turned into stone") is the name given to a special type of fossilized remains of terrestrial vegetation. It is the result of a tree or tree-like plants having completely transitioned to stone by the process of permineralization. All the organic materials have been replaced with minerals (mostly a silicate, such as quartz), while retaining the original structure of the stem tissue. Unlike other types of fossils which are typically impressions or compressions, petrified wood is a three-dimensional representation of the original organic material. The petrifaction process occurs underground, when wood becomes buried under sediment or volcanic ash and is initially preserved due to a lack of oxygen which inhibits aerobic decomposition. Mineral-laden water flowing through the covering material deposits minerals in the plant's cells; as the plant's lignin and cellulose decay, a stone mold forms in its place. The organic matter needs to become petrified before it decomposes completely. A forest where such material has petrified becomes known as a petrified forest. Kingdom: Plantae
  16. Petrified Wood - Nebraska 1.JPG

    From the album MY FOSSIL Collection - Dpaul7

    Petrified Wood SITE LOCATION: West Point, Cumings, Co., Nebraska, USA TIME PERIOD: Late Cretaceous (75-100 Million Years Ago) Data: Lake Superior Agate - Petrified wood (from the Greek root petro meaning "rock" or "stone"; literally "wood turned into stone") is the name given to a special type of fossilized remains of terrestrial vegetation. It is the result of a tree or tree-like plants having completely transitioned to stone by the process of permineralization. All the organic materials have been replaced with minerals (mostly a silicate, such as quartz), while retaining the original structure of the stem tissue. Unlike other types of fossils which are typically impressions or compressions, petrified wood is a three-dimensional representation of the original organic material. The petrifaction process occurs underground, when wood becomes buried under sediment or volcanic ash and is initially preserved due to a lack of oxygen which inhibits aerobic decomposition. Mineral-laden water flowing through the covering material deposits minerals in the plant's cells; as the plant's lignin and cellulose decay, a stone mold forms in its place. The organic matter needs to become petrified before it decomposes completely. A forest where such material has petrified becomes known as a petrified forest. Kingdom: Plantae
  17. Petrified Wood - Nebraska 1.JPG

    From the album MY FOSSIL Collection - Dpaul7

    Petrified Wood SITE LOCATION: West Point, Cumings, Co., Nebraska, USA TIME PERIOD: Late Cretaceous (75-100 Million Years Ago) Data: Lake Superior Agate - Petrified wood (from the Greek root petro meaning "rock" or "stone"; literally "wood turned into stone") is the name given to a special type of fossilized remains of terrestrial vegetation. It is the result of a tree or tree-like plants having completely transitioned to stone by the process of permineralization. All the organic materials have been replaced with minerals (mostly a silicate, such as quartz), while retaining the original structure of the stem tissue. Unlike other types of fossils which are typically impressions or compressions, petrified wood is a three-dimensional representation of the original organic material. The petrifaction process occurs underground, when wood becomes buried under sediment or volcanic ash and is initially preserved due to a lack of oxygen which inhibits aerobic decomposition. Mineral-laden water flowing through the covering material deposits minerals in the plant's cells; as the plant's lignin and cellulose decay, a stone mold forms in its place. The organic matter needs to become petrified before it decomposes completely. A forest where such material has petrified becomes known as a petrified forest. Kingdom: Plantae
  18. Petrified Wood - Nebraska 1.JPG

    From the album MY FOSSIL Collection - Dpaul7

    Petrified Wood SITE LOCATION: West Point, Cumings, Co., Nebraska, USA TIME PERIOD: Late Cretaceous (75-100 Million Years Ago) Data: Lake Superior Agate - Petrified wood (from the Greek root petro meaning "rock" or "stone"; literally "wood turned into stone") is the name given to a special type of fossilized remains of terrestrial vegetation. It is the result of a tree or tree-like plants having completely transitioned to stone by the process of permineralization. All the organic materials have been replaced with minerals (mostly a silicate, such as quartz), while retaining the original structure of the stem tissue. Unlike other types of fossils which are typically impressions or compressions, petrified wood is a three-dimensional representation of the original organic material. The petrifaction process occurs underground, when wood becomes buried under sediment or volcanic ash and is initially preserved due to a lack of oxygen which inhibits aerobic decomposition. Mineral-laden water flowing through the covering material deposits minerals in the plant's cells; as the plant's lignin and cellulose decay, a stone mold forms in its place. The organic matter needs to become petrified before it decomposes completely. A forest where such material has petrified becomes known as a petrified forest. Kingdom: Plantae
  19. Paper just released that describes the dorsal vertebrae in detail of the titanosaur Dreadnoughtus schrani from Argentina that was described in 2014. If you ever wanted to know what the different areas of a dorsal vertebra were called this gives you more than you ever need. It also gives you relative position in the vertebral column. You will be tested on the pronunciation and spelling of these words Check the scale bar it's 50 cm (appox 20 inches) Complete dorsal vertebrae are very rare especially this well preserved. This discovery gives paleontologist an opportunity to use these specimens to compare against other taxons. It also gives them a better understanding of their position in the sketal structure. https://www.app.pan.pl/article/item/app003912017.html Osteology of the dorsal vertebrae of the giant titanosaurian sauropod dinosaur Dreadnoughtus schrani from the Late Cretaceous of Argentina Kristyn K. Voegele, Matthew C. Lamanna, and Kenneth J. Lacovara Acta Palaeontologica Polonica 62 (4), 2017: 667-681 doi:https://doi.org/10.4202/app.00391.2017 app62-Voegele_etal_SOM.pdfapp003912017.pdf Supplemental Images app003912017.pdf Dreadnoughtus 2014 paper https://www.nature.com/articles/srep06196
  20. Tiny once thought to be a Triceratops its actually a Torosaurus Paper says Tiny is the most complete Cretaceous dinosaur found in Colorado http://www.denverpost.com/2017/12/05/thornton-triceratops-torosaurus/ Current bone map provide by Joe Sertich curator Denver Museum of Nature and Science Press Release from Museum
  21. MOSASAUR JAW.jpg

    From the album MY FOSSIL Collection - Dpaul7

    Mosasaur Jaw Oued Zem, Morocco TIME PERIOD: Late Cretaceous (73-95 Million Years Ago) First and most importantly, mosasaurs are not dinosaurs. Mosasaurs (from Latin Mosa meaning the 'Meuse river', and Greek sauros meaning 'lizard') are an extinct group of large marine reptiles. Their first fossil remains were discovered in a limestone quarry at Maastricht on the Meuse in 1764. Mosasaurs probably evolved from an extinct group of aquatic lizards known as aigialosaurs in the Early Cretaceous. During the last 20 million years of the Cretaceous period (Turonian-Maastrichtian ages), with the extinction of the ichthyosaurs and pliosaurs, mosasaurs became the dominant marine predators. They became extinct as a result of the K-Pg event at the end of the Cretaceous period, about 66 million years ago. Kingdom: Animalia Phylum: Chordata Class: Reptilia Order: Squamata Family: †Mosasauridae
  22. Fossil Mosasaur Teeth.jpg

    From the album MY FOSSIL Collection - Dpaul7

    Fossil Mosasaur Teeth Khourigba, Morocco TIME PERIOD: Late Cretaceous (~70 Million Years ago) Data: First and most importantly, mosasaurs are not dinosaurs. Mosasaurs (from Latin Mosa meaning the 'Meuse river', and Greek sauros meaning 'lizard') are an extinct group of large marine reptiles. Their first fossil remains were discovered in a limestone quarry at Maastricht on the Meuse in 1764. Mosasaurs probably evolved from an extinct group of aquatic lizards known as aigialosaurs in the Early Cretaceous. During the last 20 million years of the Cretaceous period (Turonian-Maastrichtian ages), with the extinction of the ichthyosaurs and pliosaurs, mosasaurs became the dominant marine predators. They became extinct as a result of the K-Pg event at the end of the Cretaceous period, about 66 million years ago. Kingdom: Animalia Phylum: Chordata Class: Reptilia Order: Squamata Family: †Mosasauridae
  23. In March of this year I found a heteromorphic ammonite that has had me curious ever since. So yesterday I finally sent an email about it to a local ammonite expert, Ron Morin, who is associated with the Dallas Paleontological Society. I had a correspondence with him in May of this year as it related to him identifying my Phlycticrioceras trinodosum heteromorphic ammonite which I recently added to 'Collections'. That's when I first talked to him. Then at the Dallas Paleontological Society's Fossil Mania event in October, I was talking to Roger Farish about my unidentified ammonite. He recommended that I contact him again for identification. Here is the email and the pictures that I sent him yesterday. I will post an update to this thread when he responds, which from my experience might be weeks. I have edited it to remove any slightly sensitive information like my name and more specific location information (I'm paranoid), as well as to fix any grammatical errors and to add relevant reference designations in between the < and > symbols: "Hello! I am Heteromorph, the one who contacted you to identify my Phlycticrioceras trinodosum specimen in May of this year, and I was wondering if you could help me identify another heteromorphic ammonite from the Upper Coniacian stage of the Austin Chalk. This specimen was found on March 23 of this year in a creek in Ellis county. It is, in fact, within half a mile of where I found the last specimen that I sent to you for identification. The stratigraphy of this area is the Atco member of the Austin Chalk, Prionocycloceras gabrielense zone. My problem is that even though it resembles P. trinodosum, there are differences that would make me reluctant to indenify it as such. To date, I have not found one like it. It is similar to P. trinodosum in that the whorl section is compressed, it has ventral tubercles, and it has an open planispiral shape. But it also has 3 key differences that make me think it is either a different species or it is very pathological. I list these below. First and foremost, the main difference is the lack of any ventrolateral tubercles, which are one of the defining characteristics of P. trinodosum. On both the specimen itself and its negative, it appears to be free of any ventrolateral tubercles. The only tubercles that I can see are the ventral tubercles which are something that P. trinodosum has as well. Second, the ribs are shaped differently than P. trinodosum. While P. trinodosum has rectiradiate ribs, this specimen has ribs which are rectiradiate until about half way up from the umbilicus, at which point it bends. Due to the fragmentary nature of this specimen, I have a hard time determining whether it bends abapically or adapically. Third, the ribs are more costate on this specimen than any of the twelve P. trinodosum specimens that I have found in the Austin Chalk. It has a rib index of 7, while the most costate specimen that I have found and know for sure is a P. trinodosum specimen only has a rib index of 5. While this is not unheard of for this species, with specimens of this species having rib indexes of up to 8 (Emerson et al. 1994), yet from my experience it is apparently very unusual for this part of the Austin Chalk. The closest thing that I have seen to my specimen is illustrated on Plate 11, fig 2 of Young, 1963 (as P. sp. cfr. douvillei), the similarity being the fact that they both have rib indexes of 7. After that, though, the similarity ends in that P. sp cfr. P. douvillei still has ventrolateral tubercles and rectiradiate ribs. I also found a very small P. trinodosum negative in the same creek just a few feet away. It has ventrolateral tubercles and a rib index of 4. The ribs are rectiradiate. A photo of it is not attached here. My specimen is 87mm long including its negative and has a whorl height of 34½mm. The oval whorl section is compressed like P. trinodosum. It is shown first in the attached photo DSCN5355. Aside from the specimen in question, for reference I have also attached photos of two P. trinodosum specimens that I have found. They are both from within 5 miles of the creek site, so they are on roughly the same stratigraphic level. What I am calling P1 is shown first in the attached photo DSCN5281 <F13> in comparison with the specimen in question. P1's negative is shown first in the attached photo DSCN5394 <22>. The positive is 69mm long when both pieces of it are measured together but 53mm when just measuring the largest piece. It has a whorl height of 31mm and a whorl breadth of 9mm. Rib index of 4. It was found within a quarter of a mile of the creek site. Because it is has just a slightly shorter whorl section to the specimen in question it is a good comparison piece. The specimen which I am calling P2 is shown in the attached photo DSCN5361 <F27>. It is only a negative but I am attaching a picture of it here because it is the specimen that I referenced earlier with a rib index of 5. It is 23mm long and has a whorl height of 15mm. It was found about 4-5 miles to the south-west of the creek site. For reference, here is a post I made about the P. trinodosum specimen that I sent you a picture of in May. I thank you very much for your help in advance. Sincerely, Heteromorph" I have given an alphanumerical designation to each picture for ease of reference. I guess it is probably kinda silly to have so many pictures that this is necessary. If this is stupid, than I extent my apologies to the Mods. I will patiently receive correction. Thank you to everyone in advance. F1 F2 F3 F4
  24. This heteromorphic species is characterized by an open plain spiral shape with slightly rursiradiate ribs and 3 sets of tubercles, 2 sets of ventrolateral tubercles, and 1 set of ventral tubercles. The whorl section is compressed and does not have constrictions in United States specimens but does have constrictions in many European specimens. The distance between ribs is roughly the same as the width of a rib. As far as I know, there are only two species reported for this genus, with the other being Phlycticrioceras rude from the late Santonian of France. (Kennedy 1995). P. trinodosum is the only species reported in Texas. This particular specimen has a rib index of roughly 3 1/2, but some specimens of this species have been known to have a rib index of up to 8. (Emerson 1994). The highest rib index of a P. trinodosum specimen that I have found is 5, although I have one specimen which could be a P. trinodosum specimen that has a rib index of 7. It was broken in two when it separated from the rock shown in the last photo, with its outer whorl being shown in the 4th and 5th photos. The outer whorl is 53mm long, and at the top where the whorl height is measurable, it is 16mm. You can see in the photos of the main part of the specimen, the impression of where its outer whorl once was. The complete specimen would be about 65-70mm in diameter if its outer whorl was still connected. Mine shows a bit of pathology in some places, with two examples being the large gap in between two ribs shown in the 4th and 5th pictures, along with two ribs being very close to each other, which is shown in the 2nd picture. Here are a few references, with the hyperlinked references being underlined. The first 4 references that I have hyperlinked are open access, while the 5th is not open access but can be obtained online without having to request the text from the authors. The 6th reference has to do with the species Phlycticrioceras rude, the only other species in this genus. I have added additional links to sources with information about this paper due to the fact that it is not open access and must be requested. The 7th and 8th references are not open access and are not hyperlinked because I cannot find any way to obtain them online. The last hyperlink is an open access stratigraphic reference for the Austin Chalk and has no information about this genus. When applicable and needed, I have put the relevant pages for information, plates, and text figures at the end of references: Ulrich Kaplan und William James Kennedy (1994). Ammoniten des westfälischen Coniac. Geologie und Paläontologie in Westfalen, Heft 31, 155 S. Pages 53, 54; Tafel 37, Figures 2-4, 9-15 on pages 142, 143; Tafel 43, Figure 3 on pages 154, 155. Zdenek Vašíček (1990). Coniacian ammonites from Štíty in Moravia (Czechoslovakia). Sbornik geologickych ved, Paleontologie 32, Pages 163-195. Pages 177, 179; Plate VI with its explanation is on page 193. Young, K. (1963). Upper Cretaceous Ammonites from the Gulf Coast of the United States. University of Texas, Publication 6304, 373 pp. Pages 45, iv, 39, 47, 371; P. sp. cfr. douvillei on pages 45, iv, 23, 26, 29, 371; Plate 4, figures 2, 3 on pages 150, 151; Plate 11, figure 2 on pages 168, 169; text figure 7 f, h on pages 156, 157. W. J. Kennedy (1984). Systematic Paleontology and Stratigraphic Distribution of the Ammonite Faunas of the French Coniacian. Palaeontological Association, London, Special Papers in Palaeontology, No. 31. Pages 136, 137; Plate 32, figures 4, 11 on pages 140, 141; text figure 42E on pages 146, 147. David L. Clark (1963). The Heteromorph Phlycticrioceras in the Texas Cretaceous. Journal of Paleontology, Vol. 37, No. 2, pp. 429-432. W. J. Kennedy, M. Bilotte and P. Melchior (1995). Ammonite faunas, biostratigraphy and sequence stratigraphy of the Coniacian-Santonian of the Corbieres (NE Pyrenees). Additional links to information concerning this paper can be found here and with the species Phlycticrioceras rude, listed here. Kennedy, W.J. and Cobban (1991). Coniacian Ammonite Faunas from the United States Western Interior. Palaeontological Association, London, Special Papers in Palaeontology, No. 45, 96pp. Barbra L. Emerson, John H. Emerson, Rosemary E. Akers and Thomas J. Akers (1994). Texas Cretaceous Ammonites and Nautiloids. Paleontology Section, Houston Gem and Mineral Society, Texas Paleontology Series Publication No. 5, 438 pp. Pages 285, 286, 388, 422. Ulrich Andrew S. Gale, William James Kennedy, Jackie A. Lees, Maria Rose Petrizzo and Ireneusz Walaszczyk (2007). An integrated study (inoceramid bivalves, ammonites, calcareous nannofossils, planktonic foraminifera, stable carbon isotopes) of the Ten Mile Creek section, Lancaster, Dallas County, north Texas, a candidate Global boundary Stratotype Section and Point for the base of the Santonian Stage. Acta Geologica Polonica, Vol. 57, No. 2, pp. 113-160. The 1st, 2nd, 4th and 8th papers also contain information on the genus Tridenticeras which is found in the Austin Chalk alongside P. trinodosum, just in case anyone is interested in that genus as well. P.S. A big thanks to DPS Ammonite. This is my first post to 'Collections' and he helped me get it all straight.
  25. The Transylvanian area of Romania boasts a rich fossil record of dinosaurs, which lived on an island (Haţeg Island) during the very end of the Cretaceous. Many of these are dwarfed in body size or exhibit other unusual features thought to be linked to their insular habitat. One of the most common of these dinosaurs is the rhabdodontid ornithopod Zalmoxes. This paper takes a look at new specimens found at the Nălaț-Vad locality. A catalog of Zalmoxes (Dinosauria, Ornithopoda) specimens from the Upper Cretaceous Nălaț-Vad locality, Hațeg Basin, Romania. (American Museum novitates, no. 3884) Brusatte, Stephen.; Dumbravă, Mihai.; Vremir, Mátyás.; Csiki-Sava, Zoltán.; Totoianu, Radu.; Norell, Mark. http://digitallibrary.amnh.org/handle/2246/6781
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