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Showing results for tags 'cenomanian'.
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'round my way (Late Cretaceous, NM), shrimp are scarce. I have been fortunate enough to find these little guys. Cenomanian Turonian I would love to see what shrimp others may be finding/collecting. Post your shrimp!
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we got an unusual claw from a huge Ptero or medium-size raptor As the literature does not really exist about the claws of most of the moroccean raptors and hugher pteros, might be someone has a good idea. Where it belongs to or about Literature I do not have or know. Lenght is approx 6 cm, what is around 2.5´´ Cenomanian, should be Aufous, KemKem-beds, Morocco thanks!
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From the album: Otodontidae
lower Cenomanian, Schloenbachia varians zone. Moscow region (Russia). Collected in 2020. I can't identify this species, the cusp is too narrow and the tooth is too thin for any species I know. If someone has extensive experience with Cretolamna, comments will be very appreciated.-
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From the album: Otodontidae
middle Cenomanian - lower Turonian. Ryazan region (Russia). collected in 2020-
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Distribution of cretoxyrhina vraconensis and your thought on these teeth
Vinnies fossils posted a topic in Micro-paleontology
Hi everyone, Some time ago, I made a couple of finds in the Lower Cenomanian grey chalk of northern France. I’ve found a couple of nice Cretalamna appendiculata here before. But these teeth were standing out because of the cusp and root structure. Normally Cretalamna has a square root, but these roots seemed a bit more rounded off. All teeth have cusps one is more anterolateral situated, missing one root lobe - the other also misses one root lobe, and the last is more lateroposterior situated. Cretoxyrhina mantelli is present at this location but I thought my teeth looked like Cretoxyrhina vraconensis. When I asked about at some local collectors they said it wasn’t possible to find C. vraconensis in France. What do you think? This first tooth is 15mm in width I’m not sure about this one could still be Cretalamna 20mm on longest side This last tooth is still in the matrix, which makes an id difficult, but it has very rounded of root lobes. Unfortunately it also misses one . 19mm wide- 16 replies
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From the album: Woodbine Formation
Polycotylid, North TX Cenomanian, Cretaceous May, 2024- 1 comment
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Got an unusual tooth some weeks ago, very small (approx 1 cm / 0.4"). First I thought it is a claw due to the shape, but it is a tooth. Reminds to a small sauropod-tooth. Any ideas? thanks ropodSaaur
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From the album: Grayson/Del Rio Formation
Ptychodus decurrens, North TX Cenomanian, Cretaceous May, 2024-
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Woodbine (Middle Cenomanian) Dinosaur(!), Plesiosaur, and Fish Tooth Plate For Identification
Mikrogeophagus posted a topic in Fossil ID
It took awhile, but I can finally say that I have discovered some Texas dinosaur material! Nothing really museum worthy, but the idea that these teeth came from a walking, breathing land animal 96 million years ago is simply insane. It seems that Protohadros byrdi is the go to identification for Woodbine hadrosaurs, but I would like some confirmation or at least second opinions from the experts on here. Both dino teeth are pretty worn because they had to travel some distance out to sea. Tooth 1 is the most obvious tooth fragment. It has the cross-shaped pattern normally seen on the occlusal of hadrosaur teeth. It is pretty worn from reworking and parts of the cementum region are missing/filled with sand. This is obviously hadrosaur, but is it a Protohadros? Normally, the Protohadros teeth I see online have serrations/crenulations? (perhaps wrong terminology) along the cutting edges. The cutting edges also usually reach to the apex of the crown. My specimen is different in that I don't see the serrations/crenulations and my crown has an occlusal table instead of an apex. Could this tooth just be from a different tooth family or maybe its a bit older in the dental battery and got weathered down? Also, I read on a random site that hadrosaurs don't have spit teeth because they stay in the dental batteries for the entire lifespan... is this true? Tooth 2 is almost unrecognizable, but the presence of enamel, symmetry, and those serrations/crenulations I mentioned above have personally convinced me. Though, the exact shape of the tooth is a bit confusing to wrap my head around. It is more like a sliver of tooth, so I don't expect anyone to really make much out of it. The presence of the single middle ridge makes me think this is Protohadros and not some nodosaur which are also known to occur in the Woodbine. @Brad84 @ThePhysicist @Ptychodus04I would ping Troodon, but it seems he has left the forum sadly. Please ping anyone else you think knows a thing or two about Texas dinos! Tooth 1: Tooth 2: Next on the menu is a fragment of plesiosaur tooth also from the Woodbine that has some really neat ornamentation. On the lingual side, the ridges branch out and anastomose. This tooth is much larger and ornamented differently than my previous plesiosaur of the same geological group. The cross section is tear-drop shaped with a single edge. In looking around on the web for a similar tooth in hopes of an ID, I found one really good match. Go figure it came also from the Cenomanian, but interestingly it was found all the way in Russia. Here's a link to that thread: So what do the experts think here? @Anomotodon @pachy-pleuro-whatnot-odon @Praefectus. And finally we have the tooth plate. When I first picked it up, I thought it was a broken piece of plastic. Its toughness surprised me and, when turning it over, I noticed that the trabecular pattern of spongey bone blanketed the underside. I think it is a tooth plate from Paralbula or Albula, but I know very little on fish plates. Would appreciate any guidance here. Had some other fun finds, but I think one day I will create a trip report covering all the bases for the site. It's been a real journey, trying to find my first dino. I'm appreciative of all the wrong turns I took along the way and the fun little avenues they took me down. I also can't help but be thankful to have had the opportunity to live in such a fortunate time and place. It's crazy to think that random people like me can just walk outside and find such neat little tidbits of our ancient past. Of course, I am not entirely finished. There are still some other kinds of dinos I would like to find (Hadrosaur material wouldn't hurt too). Hopefully I won't have to wait as long, but I am prepared to stick it out for the long haul if need be. Until then, I hope you all have enjoyed reading through this log of my travels and continue to do so as I follow the scent of fossils wherever it takes me.- 20 replies
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I don’t post on this forum and much as I probably should so here’s to changing that. Had quite the eventful afternoon hear in the Dallas area in the Eagle Ford. Found the most crabs I have ever found in my life, no ID on any of these but feel free to give me your thoughts. This was the first find of the day and got me stoked for what else I might be laying around this sight. Within 5ft of the first find I found another decapod. This was when I realized what I was in for, Crabapaloza! These next two were found within 2ft of each other. The next surprise was this assortment of fish bone, this is my first time finding any bone at this location and is currently the oldest bony material in my possession. Along with the visible fish bone was another vertebra not pictured and what I believe to be a small lobster or shrimp barely visible. A reoccurring theme, this carapace was found not to far from the fish bones as well For about 20-30ft of the exposure there wasn’t much, but again, I found more crab, center of palm, along with a gastropod shell and two pieces of ammonite, in this shape I typically don’t collect them but are a good example of the shape most ammonites and baculites are in. At this point things started to slow down, but again, another decapod. And again not to far from the last fossils, another crab and a decent ammonite, for the area, within 3ft of each other. And yet another decapod for the bag And at last, on my way back and on the way out, I gave a quick look behind where I inserted into the exposure and to my surprise, one last crab, including parts of its legs. I don’t get to this site too often, as it’s quite out of the way for me, (and is wishy-washy in its production rate) so when I do go, I make the most out of it - and today I can’t say I’m displeased at all.
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Teeth, Ammonites, and Crabs: A Day in the Upper Britton of North Texas
Aidan Campos posted a topic in Fossil Hunting Trips
On Wednesday, October 12th, I took another trip to a nearby favorite spot of mine that I found a few years ago which exposes the Sciponoceras gracile Zone, Camp Wisdom Member, Upper Britton Formation of the Eagle Ford Group here in Texas (Late Cenomanian-Early Turonian, 92-95mya), and had probably my best hunt from this site, including several different ammonites, a few shark teeth, my first Enchodus, and 26 Ferroranina dichrous crabs! First find was this very nice Yezoites delicatulus (Scaphitidae) ammonite A very worn Ptychodus sp. (Ptychodontidae) shark tooth: Sciponoceras gracile (Baculitidae) ammonite, namesake of the zone: Dead modern Procambarus steigmani — this crayfish is endemic to northeast/north central Texas: Legs of a Linuparus sp. likely L. grimmeri (Palinuridae) spiny lobster: Metoicoceras geslinianum (Acanthoceratidae) ammonite: Pair of Inoceramus capulus (Inoceramidae) bivalves: Some of the 26 total Ferroranina dichrous (Palaeocorystidae) crabs found during the day: Selenite crystals: Opuntia macrorhiza (Cactaceae), as a botanist this genus is one of my focus groups: Cameleolopha bellaplicata subsp. bellaplicata (Ostreidae) oyster occurring here as overwash from the younger Turonian Arcadia Park Formation (89-91mya) which is otherwise long since eroded away in this area: Next into some things I decided to take nice camera photos of (and consequently some of the best finds of the day) A nice tiny Cretalamna appendiculata s.l. (Otodontidae) shark tooth: My first Enchodus (Enchodontidae) fish tooth, I’m not sure which species are known from the Britton: cf. Margarites sp. (Margaritidae) gastropod, the first of this family I’ve seen in the Britton: A very beautiful Ptychodus anonymus (Ptychodontidae) shark tooth, found while crawling on the ground beneath a slope: Worthoceras vermiculus (Scaphitidae) ammonite, the nicest one I’ve collected: Natica sp. (Naticidae) gastropod, this species is extremely common in much of the Britton: Ferroranina dichrous (Palaeocorystidae) crab: My first Nannometoicoceras acceleratum (Acanthoceratidae) ammonite, fittingly tiny: Another Inoceramus capulus (Inoceramidae) bivalve: Hesperotettix speciosus (Acrididae) grasshopper: Really interesting preservation on this Ferroranina dichrous (Palaeocorystidae) crab that I had never seen before, these are almost always found in orange to dark red concretions: The total Ferroranina dichrous haul: The Nannometoicoceras acceleratum after some cleanup showing the distinctive tiny, conical umbilicus and tubercle arrangement:- 8 replies
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From the album: Woodbine Formation
aff. Terminonaris sp., North TX Cenomanian, Cretaceous Mar, 2024-
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From the album: Texas Cenomanian (Cretaceous)
Ptychodus occidentalis Uppermost middle Cenomanian Texas My most spectacular Ptychodus tooth, which I almost didn't find. I was finishing the day, and then decided to remove one last slab of sandstone before moving on. It is a decently sized tooth for the species, at 22 mm (0.87 inches) tall and 19 mm (0.75 inches) wide.- 3 comments
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From the album: Cretaceous Shark Teeth
A very rare Leptostyrax from the Kem Kem beds of Morocco. Lower Upper-Cenomanian in age.-
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Winter is the best time of the year for fossil hunting near the cliffs at the french coast. So like every year Natalie and I spend a few days at the "Côte d'opale" in northern France to prospect. The storms and tides cleaned up a lot of the boulders from the last cliff fals. The weather conditions were a bit harsh but we managed a few good prospections and we scored a few large ammonites.
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The first small-bodied ornithopod dinosaur from the Lewisville Formation (middle Cenomanian) of Texas.
Oxytropidoceras posted a topic in Fossil News
The below open access paper is interesting. Tykoski, R.S., Contreras, D.L. and Noto, C., 2023. The first small-bodied ornithopod dinosaur from the Lewisville Formation (middle Cenomanian) of Texas. Journal of Vertebrate Paleontology, p.e2257238. Yours, Paul H.-
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From the album: Texas Cenomanian Coniasaur Vertebrae
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A new genus of cretaceous 'swordfish" comes with the reassignment of two Protosphyraena species
Jared C posted a topic in Fossil News
A new genus of bill-fish like Plethodid Rhamphoichthys has been described from the Cretaceous of Lebanon and Germany. paper link: https://www.researchgate.net/publication/376263633_The_first_articulated_skeletons_of_enigmatic_Late_Cretaceous_billfish-like_actinopterygians What's interesting is that the billfish like body plan here is AGAIN convergent - Rhamphoichthys is a Plethodid, unrelated to the more famous Creteaceous "billfish" Protosphyraena (a Pachycormid). Both of these are yet again unrelated to modern billfish (the Xiphiidae). In this paper, two previously dubious species of Protosphyraena have been assigned to this new genus: P. stebbingi and P. minor, now R. stebbingi and R. minor. Pics!-
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From the album: Texas Cenomanian (Cretaceous)
Plethodid parasphenoid with teeth intact Cenomanian Texas Plethodid parasphenoids are usually found without the little teeth in place, each tooth only leaving a small pit behind instead.-
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From the album: Texas Cenomanian (Cretaceous)
Plethodid parasphenoid fragments Cenomanian Texas These bones were at the roof of the mouth towards the back, with each pit originally housing a tiny tooth-
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First biological inclusions in Upper Cretaceous Texas amber, USA
Oxytropidoceras posted a topic in Fossil News
Cifuentes-Ruiz, P., 2023. First biological inclusion in Upper Cretaceous Texas amber, USA. Boletín de la Sociedad Geológica Mexicana, 75(3), no.A091023. Boletín de la Sociedad Geológica Mexicana Yours, Paul H.-
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I seem to have lost my label for this one, but if I recall it was a Carpopenaeus (callirostris?) from Haqel, Lebanon - Cenomanian. Can anyone confirm this for me? I'm pretty sure it was from Lebanon, in any case. If any other info can be filled in also, let me know, please. Maybe my label will turn up somewhere, sometime... I know I would not have thrown such a thing out.
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Plant impressions i found in material from the Coleraine formation of Northern Minnesota, which dates to 100-90mya, i confirmed with a paleontologist that these are first known plant impressions ever found up here which has me excited but neither of us know anymore than that theyre plant impressions, can anyone here maybe give more specific information from my pictures? i hope these pictures are good enough, i donated it for further study so I can’t get more. Even if you can’t ID them i still want to know what you guys think!
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Howdy all, This is supposedly a hadrosaur tooth from the Woodbine formation of Dallas Texas that I'm very interested in. (If you know you know) Do y'all think the ID is accurate?
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From the album: Woodbine Formation
Leptocleidian Plesiosaur, North TX Cenomanian, Cretaceous Jul, 2023 Between Leptocleididae and Polycotylidae it is unclear which of the two sister families (both within the clade Leptocleidia) this tooth belongs to. This tooth is from marine coastal strata that would have been in near proximity to freshwater sources (see the Woodbine river delta that once existed over Grapevine Lake). Leptocleididae is known up until the Early Albian from freshwater, near shore, and brackish environments. Some possible teeth were documented from the Kem Kem river system which is similarly aged Cenomanian rock. They typically have very gracile teeth similar to this specimen. Polycotylidae is a sister taxon that extends through into much younger deposits and is regarded as a marine group. They arose in the Albian and typically have more robust morphologies, though a basal species could be gracile like this specimen.-
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