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Found 143 results

  1. Hi everybody! Today i wanna show you one of my dearest ammonites...Choffaticeras segne! Making a search by keywords in TFF, i found only three results for this species...so i decided to enlarge the number! Now i present you my Choffaticeras segne: it comes from Goulmima in Morocco, belongs to Turonian (Upper/Late Cretaceous), it is 19cm in height and 1.461kg in weight. This specimen has been polished in both sides, obviously. It's very decorative and it makes its good looking part in my living room. I love its external sutures, how do you call this kind of suture in english? Please, let me know! For who loves taxonomy and scientific classification (like me), i leave you a little pattern that i made. Thanks for "watching" Choffaticeras segne Dominio: Eukaryota Regno: Animalia Phylum: Mollusca Classe: Cephalopoda Sottoclasse: Ammonoidea Ordine: Ammonitida Sottordine: Ammonitina Superfamiglia: Acanthoceratoidea Famiglia: Pseudotissotiidae Sottofamiglia: Pseudotissotiinae Genere: Choffaticeras Sottogenere: Choffaticeras (Choffaticeras) Specie: Choffaticeras (Choffaticeras) segne
  2. Good tides and a promising weather forecast and we were ready to go for a trip to the French coast ( Cap-Blanc-Nez) High tide was set for 8AM, so we left around that same time, getting there when the tide was starting to go down giving us a whole day of opportunities to search. First stop was the beach of the “Grand Blanc Nez” with the Turonian cliffs. Since our last visit there, there have been high tides and multiple parts of the beach were cleared of the sand. The prospection of the loose boulders revealed for me a large Mamites nodosoides and a Morrowites wingi. I was especially happy whit that last one since it is the first specimen of this species that I found. Natalie found a small belemnite , although this might not seem spectacular, it is probably the best find of the day as they are incredibly rare in the Turonian at this location. On our way back to the car Natalie found another ammonite, this time a Lewiseceras peramplum. The way back to the car then became quite hard due to the weight and sizes of those fossils. In the afternoon we went a couple of kilometers further to prospect the Cenomanian boulders on the beaches near “Petit-Blanc-Nez”. On the first few meters on the beach I found a boulder with a really nice Cunningtoniceras inerme sticking out. Further down the beach we found a few smaller ammonites, but we ended distributing those to a few starting fossil collectors that were prospecting the area. The last good find of the day was made by Natalie who found a small but exquisite nautilus fossil ( Eutrephoceras sp. ) in the Turonian boulders: to late for this one: Mamites nodosoides: Morrowites wingi : Lewesiceras peramplum: in the Cenomanian boulders: Cunningtoniceras inerme: the little nautilus: Eutrephoceras sp. : of cource the pictures of the prepped specimens will follow.
  3. Allegedly new fish species from Vallecillo

    Hello everyone, I saw this specimen for sale as a new species from the Vallecillo quarries. I haven’t seen something like this from this formation. Does anyone have any idea of what species might this be? The size of fossil is approximately 40 cms long. The size of the matrix is 63 cms * 43 cms. The pictures were not taken by me. Thanks everyone.
  4. Choffaticeras segne

  5. Today I had a good time with fossil hunting at the Dakota formation (early Cenomanian) sites and Greenhorn formation (Cenomanian-early Turonian) sites in Ellsworth county, Kansas. Typical view of the local countryside, but still beautiful! I keep finding these weird vertebrae-like rocks, clustered in this particular site and not other sites. I suspect it's not vertebrae but I still can't figure this out yet. These mysterious vertebrae-like rocks...reminds me of shark centrum and crinoid stems but I don't think it's them. This site is Dakota formation. I took these home just in case it is identified as fossils later. I think it's fossil vegetation of some sort. Maybe reed or horsetail? I found these jumbled at different locations but put it together and it fitted like a puzzle. I took it home and will be prepped. This is from Dakota formation. Inoceramus from Greenhorn formation. One of the best specimen of this genus I have found so far! Took this one home. Another Inoceramus, pretty good specimen! I also took this one home. Tiny fossil in the center. Greenhorn formation again. This tiny fossil, image enlarged and the ridges/grooves are visible. No idea what it was. I took this one home and will be put under the microscope for identification efforts. The storm was brewing at the distance as the cold front is heading south. It was lightning and I was at near the top of hill, the road would be impassable if wet, so it was time for me to go home! I will be posting some of those fossils on the Fossils ID section soon after it is cleaned up. Cheers!
  6. Help w/ ID new fossil finds!

    Hello! I'm a pretty novice fossil hunter, so I look for things that stand out! Recently I found these in a span of about two weeks, I haven't seen anything like them before. The small ones all have a flat/facet on the posterior side, same teardrop shape, and the larger ones look like " big ears" to me, lol. I thought maybe iron concecretions at first, but the small ones look different, in that they are not "round". Ammonites? Reminds me of some of the pics posted of plesiosaur fossils, I have more pics, but the files are too big to post all at one time - I would really appreciate any insight! Fossil pic 3.pdf
  7. Upper Cretaceous oddity

    While out in the Puerco, I smacked open a concretion to find an unfamiliar pattern. Any thoughts or ideas are greatly appreciated. The specimen is from the Upper Cretaceous (Turonian) Carlile Shale. It is layered and each layer has this pattern. I currently do not have a measurement but will do so. Thanks for taking a look.
  8. Nicaisolopha nicaisei (Coquand 1862)

    From the album Gastropods and Bivalves Worldwide

    9x8cm. Turonian, Late Cretaceous Cajamarca, Peru
  9. Polish coprolite: shark?

    Hello all This summer I found this coprolite in the Odra quarry in Poland. I found around 6 of these but nothing else. The other members of the group found shark teeth and some other stuff. Mosasaur remains are also found there, but extremely rare. I know it's hard to assign coprolites to kind of animal, but is this what a shark coprolite would look like? Around 1 cm.
  10. Hello forum members! With the new Coronavirus raging across the world, I thought it would be nice to start some kind of advent calendar, using my own Squalicorax collection. Everyday I will post one or multiple Squalicorax teeth from one location. Let's see what ends sooner, my collection or the virus outbreak. I will start with the oldest tooth from the Albian substage and end with the teeth from the uppermost substage; the Maastrichtian. The first one is the oldest and also one of the smallest teeth in my collection. Unfortunately it is so small that the photo's are not as sharp as I would have liked, but I think they are good enough. It is Squalicorax primaevus from the Middle Albian Argiles tégulines of Courcelles, Aube Department, France. See you guys tomorrow, Sander
  11. I took this photo of an ammonite fossil from the Late Cretaceous (Turonian) Ladd Formation of the Santa Ana Mountains in Orange County on display at the fossil collection inside the Lewis Center for Applied Sciences at Orange Coast College earlier this week
  12. Holaster subglobosus (Leske 1778)

    From the album Echinodermata

    4x4.5x2.5cm. Turonian Late Cretaceous Paris Basin
  13. a christmas fossil trip

    Like last year Natalie and I spent 4 days on a fossil hunting trip on a few different locations on the northern coast of France. Each day a different location. The stormy weather conditions made the beaches realy favorable foor fossil hunting as lots of specimens could be found loose on the beaches. We started Saturday with Turonian sea urchins, sunday Kimmeridge clay and limestone, monday turonian ammonites and the last day mostly cenomanian fossils. Highlights of the trip were a few large ammonites ( Lewisceras and Acanthoceras ) and a rare tooth of a marine reptile from the Kimmeridge deposits.
  14. Всем привет! Помогите пожалуйста с определением.-Узбекистан, Туронский. Translation: Hello! Please help with ID. Found in Dzhirakuduk-Kyzylkum-Uzbekistan. Turon brandy.
  15. Choffaticeras segne (Solger 1903)

    From the album Cephalopods Worldwide

    11.5cm. Early Turonian Late Cretaceous From Asfla, Goulmima, Atlas mountains, Morocco You can see the siphuncle in the bottom photo.
  16. ID for this shark

    Hi there! This is my first post at Fossil Forum, hope this information could help in getting some help to identify this fossil. It was found at a quarry in Vallecillo, Mexico (northeast part, less than 100 kms from Laredo, Texas). The fossils found here belong to the the Vallecillo member from the Agua Nueva formation, aparently from late Cenomanian to early Turonian. The full length including the separate vertebrae is aproximately 29 inches or 74 centimeters. The longest tooth is aproximately 1.4 centimeters long. I was only able to post a single picture, hope it helps.
  17. Ammonite hunt in Northern France

    We are back from a very windy fieldtrip to Cap blanc Nez in France. The wind covered a lot of the rocks with sand and sea foam ( https://en.wikipedia.org/wiki/Sea_foam ) which made fossil hunting rather difficult. We were helped by a local collector in the morning who guided us through the Turonian deposits of this site where we rarely colect, here we got 2 big ammonites. One of them was a Mamites nodosoides, this species as been on my wishlist for a while, so I am very happy with it In the afternoon we prospected the Cenomanian side. her we found the usual Mantelliceras and Scloenbachia ammonites. The prospecting site: ( we did see the coast of the UK on the other side of the channel ) Some of the ammonites we found: The Mammites: pictures of the prepped specimens will follow during the next week.
  18. Rudist ?

    Hi, a friend of mine told me he found some Placentyceras in a place where the geologic ages go from the Albian to the Turonian-Santonian, but most of the stratas of that place are Cenomanian. I believe this fossil is not an ammonite, but rather an Oyster or a rudist. I mostly think about Requienia or Toucasia. The geologic file mention the name of Toncasia bayleia. Do you know if Toncasia is a synonym of Toucasia and do you think i'm right thinking this is a rudist ? Lenght : 7 centimeters.
  19. This saturday the tides were ideal for a whole day of prospection at the foot of the chalk cliffs near Calais. We got there early in the morning when the water was going away from the cliffs. At the parking we were greeted by a veteran collector from this location, he took us along to the northern part of the site in search of big Turonian ammonites. A first for us since we've only collected more to the south in the cenomanian deposits. With his help we did find a couple of ammonites including a big specimen. around 1pm after lunch we parted ways and we went to the southern part of the site in search of cenomanian fossils, most of the beach was covered in sand, making it harder to find some decent boulders on the beach to break open. but the usual Schloenbachia and Mantelliceras ammonites did show up. we ended the day with dinner in a local tavern before heading back home whit a new load of fossils to clean and prepp. A Lewisceras Ammonite: A large Ammonite, I still have to prepp and Id it propperly: the extraction of the large ammonite: A nice find from Natalie: under the sand on the beach Albian deposits are present, but not visible, from time to time som fossils from those banks are washed out deeper in the sea and washed ashore. She found a nice Hoplites ammonite lying around on the beach: more pictures of the area: Schloenbachia varians: Mantelliceras specimens in situ: part of the fossils that made it back home: Pictures of prepped specimens will follow later
  20. Isastrea oblonga (Fleming 1827)

    From the album Slices

    6x3cm. Silicified coral from the area around Tisbury, Wiltshire, UK, known as the "Star Coral". Tithonian, Late Jurassic Portland Group.
  21. Kansas pliosaur skull

    Just got a new paper from ResearchGate It basically describes the dentition morphology of Megacephalosaurus eulerti, a pliosaur from the Turonian Carlile Shale of Kansas. The paper also looks at general aspects of M. eulerti cranial anatomy. The study is based on a beautiful skull housed at the Fort Hays Museum of Natural History (see below). Madzia, D., Sachs, S., & Lindgren, J. (2018). Morphological and phylogenetic aspects of the dentition of Megacephalosaurus eulerti, a pliosaurid from the Turonian of Kansas, USA, with remarks on the cranial anatomy of the taxon. Geological Magazine, 1-16. Abstract of the paper: Megacephalosaurus eulerti is a large macropredatory plesiosaur representing one of the last members of the diverse pliosaurid clade Brachaucheninae. The taxon was established upon a nearly complete skull including the mandible and fragments of the postcranial skeleton originating from the lower middle Turonian (Upper Cretaceous) of Kansas, USA. Owing to its age, reasonable completeness and its state of preservation, M. eulerti bears important anatomical details regarding the last brachauchenines. Here we assess the dentition of the taxon, compare the teeth to those of other thalassophonean pliosaurids and comment on the utility of these results for inferences of the phylogenetic relationships of the last brachauchenines. Additionally, we provide remarks on the cranial anatomy of M. eulerti, revise character scores of this taxon used in current phylogenetic studies and address the phylogenetic relationships within Brachaucheninae. Parsimony analyses, aimed to test different char- acter sampling and tree-search strategy, inferred only a single unambiguous synapomorphy uniting a clade formed by mid- to Late Cretaceous brachauchenines: presence of subcircular rather than subtrihedral/trihedral cross-sectional shape of the teeth. Still, the last brachauchenines (Brachauchenius and Megacephalosaurus) can be roughly characterized by a switch from anisodont to subisodont dentition and reduction of their tooth count. Nevertheless, the overall knowledge of the origin, phylogenetic relationships and distinguishability of brachauchenine pliosaurids remains poor and represents a subject for further extensive studies and modifications in taxon and character sampling. For those who want it, I can send it by email to them
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