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Showing results for tags 'crocodile'.
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I just recieved a box with a random assortment of Kem Kem fossils and I was wondering if some of you might help out with some of the ID's 1) A fish scute, Adrianaichthys (Lepidotes) pankowskii would be my guess. 2) Another Adrianaichthys (Lepidotes) pankowskii scale? 3) A small bone, turtle perhaps? 4) Crocodile osteoderm 5) Crocodile osteoderm 6) I often see similar fossil sold as Kem Kem coprolites 7) base of an Onchopristis numides rostrum tooth 8) A large fish vert, could it be Chondrichthyan like Onchopristis or probably just bony fish? 9) A fish vert? 10) Spinosaurid tooth
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I have here a 1.5" tooth that was sold to me as Sarcosuchus from the Cretaceous of Niger. It's been brought to my attention that this may instead be Suchomimus. After comparing photographs, I believe that Suchomimus is accurate. I'd appreciate more eyes on this. Which one might this be? Thank you, Bellamy
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Mongolian carnivore tooth with jaw fragment. Is this a croc or theorpod?
-Andy- posted a topic in Fossil ID
Hi all, I had posted about this tooth years ago and the conclusion back then was that its preservation was too poor for any proper ID. I am hoping that with new information we can at least determine if this is a crocodile or theropod. I discovered today that this tooth preserved some serrations First up, this tooth was acquired from a source with many Mongolian material. He called this an Alioramus tooth but I am not comfortable calling it that yet Secondly, a museum curator (who has handled Mongolian material) examined this tooth in person. He concluded this tooth was indeed Mongolian but he could only say it's a carnivore. Unfortunately, we are unable to determine which part of Mongolia it came from. The crown is 40 mm in a straight line. I have quite a number of croc and theropod teeth and this tooth feels much closer to a theropod than a crocodile both in terms of morphology and size. However, I am not unbiased in my ID, and the shallow jaw fragment is throwing me off. Assuming this is indeed from a tyrannosaur, I'd expect the jaw to be much deeper. Please let me know your honest thoughts, thank you Comparison of tooth to a cf. Daspletosaurus from the Judith River Formation
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I posted this one alongside a few other teeth, but it didn't get as much traction as I hoped. It's the one I was most curious about, and extremely unusual to me, so I figured posting it individually would be helpful. This is a Moroccan crocodile tooth from Kem Kem. It is serrated, and dagger-shaped, 1.02" long and 0.32" wide. Out of those I have consulted, Troodon proposed Hamadasuchus, though yielded that the dagger-shape is not consistent with those he had seen with those: I've essentially used all of my leads over these few days. If anyone has a different theory, I would appreciate anything to go on. Thank you, Bellamy
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I have here two crocodile teeth from the Bissekty Formation of Uzbekistan, and one from Morocco. I'd appreciate any help identifying them. Uzbekistan I 1.28" long, 0.39" wide
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I have here a tooth alleged to be Deinosuchus from the Aguja of Brewester County, Texas. It's 1" long. Does it appear to be so? And how would this be differentiated from other crocodile teeth in that formation? Thank you, Bellamy
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I have here two teeth identified as Sarcosuchus sp. from Kem Kem, Morocco. They don't look like any Sarcosuchus teeth I've seen. Many here are more knowledgeable than I am about crocodiles. Based on these views, can they be identified as such? These are two different teeth. The first one is 4.2 cm long and nearly 2 cm across the base. The latter is 7 cm and 2.5 cm across the base. Thank you, Bellamy
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I have this piece, crocodile?, which I think is a part of a vertebra?. It looks like the are zygapophyses visable and I think the grove should be the neuralcanal. But I am not sure, con someone shine a light on it? Measurements: 70x60x36mm Thank you
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I have a 1" dagger-shaped tooth from the Kem Kem. I bought it as a crocodile tooth. The way it's shaped I assumed it was a fish fang, but the enamel looks pretty much like a crocodile's. Here are the only photographs I have access to for the time; is it identifiable? Thank you, Bellamy
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What species of Morrison Formation Crocodile could this come from?
dinosaur man posted a topic in Fossil ID
Hi, this just arrived along with a few other teeth, and I was wondering if it was possible to identify which species it could be. It’s a Crocodile indet. tooth from the Morrison Formation Is all I know. Thank you for any reply’s
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I'm trying to help someone ID this vertebra found in Gloucester, UK a few years ago. It's from a Jurassic site and I'm pretty sure it's a theropod vertebra but was wondering if anyone on the forum could help out? I have a theropod tooth from the same place which I might post soon in the hope of narrowing down an ID too. Thanks in advance!
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Guess who's back I have this piece of I think a left lower jaw from either a crocodile or dinosaur. If I look at the toothsockets they are for round teeth, so crocodile (looking at the size Elosuchus?) or spinosaurid. I am leaning more towards a crocodil. Size: 18x6x2cm Thank you
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Wanted: Crocodile teeth (STH stuff to trade)
gigantoraptor posted a topic in Member-to-Member Fossil Trades
Hello all Up for trade I offer this nice set of Shark tooth Hill teeth from Kern County California. In return for this set, or individual teeth I would like to get crocodile or crocodile-like (alligator, Phytosaurs...) teeth from as many various locations/species as possible. This group of animals is a bit underappreciated I think, but last time I lend some fossils to the local school, there were some crocodile teeth among them and the kids really loved them and that surprised me a bit. Anyway, I hope I can expand my crocodile collection a bit. These teeth are available for trading: Upper row: Allodesmus tooth, two unknown whale teeth, Desmostylus tooth, Allodesmus canine (glued) Lower row: Dolphin ear bone?, Rooted Allodesmus tooth, Rooted whale tooth. I already got: Still undetermined species from the Hell Creek Formation, USA Phytosaur teeth from the Chinle formation, USA Geosaurine Metriorhynchid, from Painten, Germany Unknown species from Unknown formation or location in Argentina Multiple species from the Kem Kem beds in Morocco Sarcosuchus imperator from the Elrhaz formation in NIger. Machimosaurus sp. from Portugal. Yet unidentified tooth from France (Self found). Might be crocodile, might be other reptile. Alligator teeth from Florida USA. What I really want: Big croc tooth from Java, Indonesia Pallimnarchus tooth or jaw piece from Australia Razanandrongobe tooth from Madagascar Kaprosuchus tooth from Niger Deinosuchus tooth from the USA Croc crowns (+6cm) or rooted croc teeth from Kem Kem. Crocodile teeth from Dinosaur bearing formations throughout the USA Canadian croc tooth. I'm also interested in other crocodile teeth, depending on country, or condition.. Size isn't really important. So far, on a map, these are the countries I got crocodile teeth from: Who, oh who could help me to paint this map more red.
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Hello, This caught my eye. It's sold as a crocodile bone from the Kem Kem beds, but the fact it's hollow makes me think it might actually be theropod. Are croc bones hollow? It is 9 inches by 3.5 by 2.7.
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Hello, Found this tiny tooth of about 1 x 1 cm in marine Jurassic sediment in the Boulonnais. North of France. Could this be a marine crocodile tooth, such as machimosaurus? Regards, Niels
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Hello all, I've had two teeth in my collection for many years now. I've recently moved and lost the supplied ID labels that came with them. I've taken this as a nice opportunity to see what others may think they are. I believe if memory serves me right the large tooth (Tooth A in photos) was labeled as a Simolestes. Then the smaller tooth tip (Tooth B in photos) labeled as Liopleurodon. I know both were found in the Wicklesham pit in Faringdon, Oxfordshire, UK. Upon some research, I found an article from 2014 with a Dakosaurus tooth discovered to be the largest in the UK at the time. This tooth bears some resemblance to tooth A but I'm unsure. I've attached a link to the article below. Tooth B has been worn down but still presents with grooves in the enamel. I have also labeled each photo to allow for easier identification when talking about it (Hope this helps!). Im excited to hear what others think. Thanks for reading Link to articles on Dakosaurus- http://www.sci-news.com/paleontology/science-tooth-fossil-dakosaurus-maximus-01954.html
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Hello, this is my first post on the forum so firstly I apologise if I have done anything wrong. I brought these teeth a number of years ago and have only just got round to sorting them out. The first one was listed as Jurassic crocodile tooth and the second as Jurassic Plesiosaur tooth, they both come from the Oxford clay around Peterborough. I would really like to put a species name to these teeth if possible so any help would be greatly appreciated. My initial thoughts were Metriorhynchus for the crocodile tooth and Cryptoclidus for the Plesiosaur but I am a complete amateur and would love some help from professionals. Finding information online about the Oxford clay seems to be very difficult. Thanks in advance for your help.
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Miocene, Eocene, Paleocene -- some cool Maryland finds!
HemiHunter posted a topic in Fossil Hunting Trips
Merry Christmas to everybody! I am just catching up posting some cool finds from a few short trips I've made recently in Maryland--going back through time--Miocene, Eocene, Paleocene. (In the interest of time, I'm only posting the highlights, not everything I found, and not all of what my kids found.) Miocene-- After some heavy rains I snuck out early on a Friday for a quick solo trip to the Calvert Cliffs. Conditions were actually not great, as the water was still a little muddy and the waves were pretty rough due to blustery winds. After a couple of hours I was not finding much and getting ready to head out (dejected) to warm up with a hot cup of coffee. But just then the fossil gods took pity on me and uncovered this awesome mako. At just over 2", it's in perfect shape and my personal best! I took a quick video collecting it to share with my kids here: https://youtu.be/SItWtdYw7SQ
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Here's a third North American Alligatorid named this year, discovered in the Late Cretaceous Atlantic coast, from New Jersey to Mississippi. This follows a post I made on Friday, Dec. 18, concerning two others discovered this year: 3. Deinosuchus schwimmeri A systematic review of the giant alligatoroid Deinosuchus from the Campanian of North America and its implications for the relationships at the root of Crocodylia ABSTRACT: Deinosuchus is a lineage of giant (≥10 m) Late Cretaceous crocodylians from North America. These were the largest semiaquatic predators in their environments and are known to have fed on large vertebrates, including contemporaneous terrestrial vertebrates such as dinosaurs. Fossils have been found in units of Campanian age from northern Mexico to Montana in the west and Mississippi to New Jersey in the east. Three species have been named, and recent consensus suggests that they represent a single, widely ranging species. The authors studied newly collected material from western Texas and increased sampling from throughout North America to review species-level systematics of Deinosuchus and help refine its phylogenetic placement among crocodylians. Deinosuchus from eastern and western North America can be consistently differentiated and represent different species. A phylogenetic study is conducted including new character states. This work reinforces the identity of the ‘terror crocodile’ as an alligatoroid. Reference to the holotypes indicates that the generic name holder, Deinosuchus hatcheri, is extremely incomplete. As a result, the three known species of Deinosuchus cannot be differentiated. To ensure nomenclatural stability, the type species for Deinosuchus should be transferred to Deinosuchus riograndensis, a species known from multiple mostly complete individuals. Additionally, Deinosuchus rugosus is based on a holotype that is not diagnostic, and a new species, Deinosuchus schwimmeri, is named to encompass some specimens formerly assigned to D. rugosus. https://www.tandfonline.com/doi/full/10.1080/02724634.2020.1767638 News article: http://www.sci-news.com/paleontology/deinosuchus-schwimmeri-08730.html Image credit: Cossette and Brochu. doi: 10.1080/02724634.2020.1767638.
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Two new species of Alligatorids were discovered this year, one in Florida, another in Texas. The one from Florida seems to bridge the extinct A. mefferdi, to the extant A. mississippiensis, sharing characteristics of both. 1. Alligator hailensis New early Pleistocene Alligator (Eusuchia: Crocodylia) from Florida bridges a gap in Alligator evolution ABSTRACT: The American Alligator (Alligator mississippiensis) is one of two species of Alligator in the modern world. It is only distantly related to the other extant species (A. sinensis), with much closer relatives known from the geologic past of North America. A disparity exists, though, in the fossil record between A. mississippiensis and its close relative, the late Miocene (?)—early Pliocene A. mefferdi. While A. mississippiensis is known from the mid-Pleistocene and later, few Alligator remains were known from the earliest Pleistocene of North America until the discovery of the Haile 7C and 7G early Pleistocene (Blancan Land Mammal Age) sites from Alachua County, Florida. The Haile alligators exhibit a suite of characters from both A. mississippiensis and A. mefferdi, displaying intermediate morphology in time. The Haile alligators are distinct from either of the aforementioned taxa, and a new species, Alligator hailensis is suggested, bridging an important gap in the evolution of the American Alligator. https://www.biotaxa.org/Zootaxa/article/view/zootaxa.4868.1.3 Image below of Alligator hailensis is by Jeremy B. Stout. Creative Commons 4.0 (CC By.SA.4.0) 2. Bottosaurus fustidens A new species of Bottosaurus (Alligatoroidea: Caimaninae) from the Black Peaks Formation (Palaeocene) of Texas indicates an early radiation of North American caimanines ABSTRACT: Morphological and molecular data suggest a close relationship for alligators and caimans. The first fossil appearances combined with phylogenetic hypotheses suggest a divergence of the groups near the Cretaceous–Palaeogene boundary, but the early fossil record of Caimaninae is incomplete, and large gaps exist between the earliest representatives of the group. A new caimanine from lower Palaeocene (Tiffanian) deposits in the Black Peaks Formation of Brewster County, Texas is established upon two specimens of different size that bear similarities to Bottosaurus harlani from the uppermost Cretaceous and lowermost Palaeogene of New Jersey. The larger individual consists of a partial skull and lower jaw in addition to postcranial material. The smaller individual preserves a snout and posterior portions of the skull. Both specimens suggest an animal with a comparatively short, flat, broad snout. Species of Bottosaurus share diagnostic morphological character states but are differentiated in meaningful ways. Phylogenetic analysis shows that the new species is sister to B. harlani, indicates an early radiation of North American caimanines and elucidates a more complicated biogeographical history than previously hypothesized. A growing body of evidence suggests that Caimaninae may be diagnosed by ancestral characters, potentially drawing basal alligatoroids crownwards in phylogenetic trees. https://academic.oup.com/zoolinnean/article-abstract/191/1/276/5815831
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Hello together, I am not entirely sure if the fossil ID section is the right place for this, but I am hoping for information on a fossil specimen, its not one I hold in hands, but a ct scan, and I think I may not post pictures because they are copyrighted. While looking for new inspirations for my model building I took a close look at this wonderful ct scan of a Simosuchus clarki skull. A pugnosed crocodile, how sweet is that? I wonder two things: -how is that bilateral bone called that in many crocodiles protrudes downwards from the skullbase reaching between the mandibles? -Could the fragile structure of the distal end of said bone hint at a juvenile animal? In recent croc skulls I have seen these bones seemed quite solid. The species description says several specimens in a range of sizes have been found, all below one meter and considered fully grown. on the Digimorph site there are videos showing rotation and cross-sections, the structure in question is best visible in the "roll"-vid: http://digimorph.org/specimens/Simosuchus_clarki/ Thanks and Regards, J
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Hello, I won this last night. Sold as Spino, but I have my doubts cos of how thin it is and the fact it went for a really low price makes me think it is also croc. If someone can take a look, that would be great. If spino, then I gotba bargain. If croc, well, it is still a lower than normal price and will be nice on my crocodile vertebra row. Sorry for screenshot pics, im on phone so cant save directly. It is from Kem Kem basin. 2.16 inch. 216 g in weight. Many thanks
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Marine crocodile vertebrae: what's the difference?
pachy-pleuro-whatnot-odon posted a topic in Questions & Answers
Hi all, I recently took some more interest in crocodile vertebrae, an area that I haven't really touched on before. Now I already knew that the vertebrae of marine crocodiles differ from those of more terrestrial species as Thalattosuchia have platycoelous vertebral centrums, whereas other crocodylomorphs have procoelous vertebrae. Within Thalattosuchia, however, the two major branches superficially (at least) seem to have rather similar "waisted" vertebrae. So, what I was wondering about was how one can tell Metriorhynchid vertebrae apart from Teleosaurid ones. Anyone here that could help me with that? Anyway, thanks in advance for your help! -
The first one is somthing I cant assign to a family, the closest is this example of therizinosaurid
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Hi again. I have another one for you. I think I could tell if it wasn't broken! Found in green mill run. It is 1.5 inches or 3.8 cm. There is a definite ridge on one side. I tried to get a good picture of its location, the cavity seems slightly oval. Thank you again! I really appreciate you all teaching and helping me!
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