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Showing results for tags 'upper cretaceous'.
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Herrickiceras costatum (Herrick and Johnson, 1900)
PFOOLEY posted a gallery image in Member Collections
From the album: Upper Cretaceous New Mexico
illustration from Herrick and Johnson, 1900 -
Found this today in creek bed gravel near Bowie Maryland (near Old Crain Drive). Upper Cretaceous Severn Formation. Any idea? Interesting areas of white coloring, between tooth and base? I know base is missing. Does anyone know what causes the white banding?
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Hi, This is a detached piece I found in a mountain torrent. Campanian-maastrichtian strata, SE Pyrenees. My guess is genus Vaccinites, mainly due to the polygonal-shaped pores on the upper valve (which has big diameter: around 15 cm.) Lower valve is conical, geniculate and broken before its end, allowing its pillars and ligament ridge to show. Can anyone confirm the genus and, if possible, identify the species? The most common species in the zone is Vaccinites archiaci.
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Hi everyone, Some weeks ago I found this piece in Maastrichtian strata (limestone) in southern eastern Pyrenees. Quite obviously, it is a Cyclolites/Cunnolites (C.Elliptica?), although its size surprised me: Larger diameter D=155 mm. d= 133 mm. Height H=65 mm Weight W=1.620 gr. Has somebody any references of bigger specimens? After a light prep with potassium hydroxide, the flat side appeared to be littered with small fossil pieces: Bristle worms? Bryozoans? Etc. Thanks
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Hi, I found those pieces in a Maastrichtian limestone strata of the SE of the Pyrenees. Size (large): 1 - 25 mm 2 - 37 mm 3 - 39 mm My guess is genus Ceratostreon, and specifically Ceratostreon pliciferum for Nr.3. Thanks,
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Spathites puercoensis (Herrick & Johnson, 1900)
PFOOLEY posted a gallery image in Member Collections
From the album: Upper Cretaceous New Mexico
illustration from Herrick and Johnson, 1900- 2 comments
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- ammonite
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My first post Need assistance with fossil ID. I believe this is a eagle ray tooth. Stratigraphic unit is likely Severn Formation, Upper Cretaceous in Maryland. Found along Magothy River near Ulmstead. Could also be from Paleocene Aquia formation as stratigraphic contact in cliff by beach. If Severn Formation - I believe an early example of ray in fossil record.
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Hi everyone, I found those pieces in a Campanian-maastrichtian limestone strata in SE Pyrenees (Catalonia, Spain) My ID guess is genus Lapeirousia, maybe Lapeirousia jouanneti or Lapeirousia crateriformis, species easily found in Aquitaine, France., mainly due to its characteristic pseudopillars. Thanks,
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From the album: Vertebrates
Dinosaur eggshell (Saltasaurus) from the Upper Cretaceous of Argentina. -
From the album: Vertebrates
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Hi, I live in an area where there are plenty of upper cretaceous rudist-coral reefs to study and for the time being my interest is focused on them. I’m an amateur, not a sound paleontologist. Hope to learn a lot together.
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From the album: MY FOSSIL Collection - Dpaul7
Borealosuchus stembergii fossils: scute, vertebrae, jaw/skull piece and teeth in display SITE LOCATION: Hell Creek formation, Montana, USA TIME PERIOD: Upper Cretaceous (66-100.5 Million Years ago) Data: Borealosuchus (meaning "boreal crocodile") is an extinct genus of crocodylians that lived from the Late Cretaceous to the Eocene in North America. It was named by Chris Brochu in 1997 for several species that had been assigned to Leidyosuchus. The species assigned to it are: B. sternbergii, the type species, from the Maastrichtian (Late Cretaceous) of Colorado, Montana, North Dakota, South Dakota, and Wyoming; B. acutidentatus, from the Paleocene of Saskatchewan; B. formidabilis, from the Paleocene of North Dakota; B. griffithi, from the Paleocene of Alberta; and B. wilsoni, from the Eocene of Wyoming. Borealosuchus was a mid-sized crocodylian; B. acutidentatus reached up to 2.8 metres (9.2 ft) in length with a 36 centimetres (14 in) skull. Kingdom: Animalia Phylum: Chordata Class: Reptilia Order: Crocodilia Genus: †Borealosuchus Species: †stembergii -
From the album: MY FOSSIL Collection - Dpaul7
Mosasaur vertebra SITE LOCATION: Taylor Group, North Sulfur River, Texas, USA TIME PERIOD: Upper Cretaceous Period (100-145 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 -
From the album: MY FOSSIL Collection - Dpaul7
Mosasaur vertebra SITE LOCATION: Taylor Group, North Sulfur River, Texas, USA TIME PERIOD: Upper Cretaceous Period (100-145 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 -
This tooth was found on an anthill. It was donated to the U.S. Forest Service, Minerals and Geology Management Department., Chadron, Nebraska, in July, 2017.
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I went to the Menefee Formation... ...
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I found this clam a while back. The one side was pretty clean, but the other side and top were covered with something like mudstone. So I set about cleaning it up a little. I'm an amature wanna be so I didn't do that great of a job, but as I was cleaning off the mudstone like stuff I uncovered at least 3 other critters. I broke the fragile shell of creature # 2 attached to the top, before I realized it was another shell. I thought it was shell fragment in the mudstone. I uncovered creature # 3 a very tiny worm about 1 mm in diameter and maybe 2 cm long. I also uncovered creature # 4 a more robust worm about 6 mm in diameter. I'm not sure how long that one is, because I may have broken him in half before I realized he was there. I think it was wrapped around the clam on the top and side. There may be a 3rd worm down the side as well. I got distracted by something else and never finished cleaning it up. Anyway, can anyone tell me what type of clam this is? Can anyone tell if the worms are different species or is one just younger than the other? I don't think creature #2 is not really identifiable other than maybe a barnacle type or something. I don't know my creatures. I'm new at this.
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After visiting my crew out in Placitas (short drive from ABQ), I decided to stop at a BLM open space at the roadside. There is a supposed Upper Cretaceous section exposed here and I figured I would eat my lunch and go for a short walk. If there was an K section, it did not look the part... ...the surface of the slopes are covered with Carboniferous (Pennsylvanian) rocks. I mosied along the trail, munching on a granola bar when I spotted some concretions and shale up a gully... ...and upon further inspection, an ammonite! I quickly marched my coiled companion to the truck...back to work! There is definitely some Upper Cretaceous rocks here and well worth a return trip. Planned or impromptu...happy hunting! -P.
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Using Fossils to Find the Source of Stone Used in Spanish Sculptures
Oxytropidoceras posted a topic in Fossil News
Snail fossils reveal origin of rocks used to carve ancient Spanish monuments. The snails trapped in the monument stone are 85 million years old. By Brooks Hays, UPI, Aug. 3, 2017 https://www.upi.com/Science_News/2017/08/03/Snail-fossils-reveal-origin-of-rocks-used-to-carve-ancient-Spanish-monuments/9001501769546/ The paper is: Freire-Lista, D.m., and R. Fort, 2017, Historical Quarries, Decay and Petrophysical Properties of Carbonate Stones Used in the Historical Center of Madrid (Spain) AIMS Geosciences, 2017, 3(2): 284-303. doi: 10.3934/geosci.2017.2.284. http://www.aimspress.com/article/10.3934/geosci.2017.2.284 PDF file at: https://cronicaglobal.elespanol.com/uploads/s1/52/76/85/Carbonate stones Madrid.pdf Yours, Paul H.-
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Hello! I am currently looking for the rudists of the Upper Cretaceous Gosau basin of Kainach, Styria, Austria, around St. Bartholomae. So far, I have found one determinable specimen. I think, it could be Vaccinites vesiculosus (Woodward 1855). From this area, beside other rudists, Hippurites styriacus Hilber 1902, Hippurites carinthiacus Redlich 1899 and Hippirutes oppeli santoniensis Kühn 1954 are described in the literature, which seem to be all synonyms of V. vesiculosus, according to various sources. The first photo shows the outer surface of the specimen, which is not very distinctive. Height of the specimen is 13 cm, maximum diameter about 7 cm. A saw cut is indicated by a green arrow. The second picture shows the two polished, cut surfaces of the "rock". The diamater of the large rudist is 7 cm, it seems to be intergrown with a Radiolites sp. and there is also a small Hippurites sp. nearby. The third picture is an enlargement of the V. vesiculosus in question. What do you think, could my determination as V. v. be correct? Thank you very much for your help! Franz Bernhard Picture 2
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This was found on an anthill in the Hell Creek Formation, SD. A few years ago, a paleontologist at the South Dakota School of Mines looked at it and thought it could be avian. Can anyone out there confirm this? If so, any ideas as to species? Thanks for looking!
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Hi all, Am I on the right track here? Is this a Mosasaurus tooth? It was found in Iron Ore Creek in Grayson Co. Texas. Upper cretaceous, Austin chalk runs throughout this area of Grayson co. so believe it's within the same strata as Post oak creek in Sherman. About 15/16" long and 3/8" wide.
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The Rio Puerco Valley was my introduction to fossils. For many years now, I have scoured its Late Cretaceous shales and sandstones in search of ammonites. Somewhere along the way, my fascination with the ornament grew into an investigation of its environment. Last week at the New Mexico Geologic Society's Spring meeting, I made my first venture into the world of paleontological science. With the help of Dr. Spencer Lucas of the New Mexico Museum of Natural History, I presented a poster/abstract (Foley & Lucas 2017.pdf) exhibiting my ideas. I received some criticism for incorporating ammonite ornament and caught some grief for including a labeled map...otherwise, this was an amazing learning experience and I am ready to move forward. Back to the rocks!...I have a paper to write. Blue Hill Shale: Spathites puercoensis: Prionocyclys hyatti: Coilopoceras springeri:
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I have seen this type of trace many times before...each time I wonder. Do you have any ideas? The knife is 3" in length...thank you for your thoughts.
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I prepped another Niobrara coprolite and found an interesting inclusion. With my limited knowledge of fish anatomy, My best guess is some kind of connecting bone where the vertebrae meet the skull? The coprolite contains both large and small fish vertebrae in addition to this bone. Thanks in advance for your help!
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