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Showing results for tags 'cretalamna'.
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I think North Texans will relate when I say that now and then, the urge to take a drive out to the NSR and spend the day hunting some Campanian gravel bars can spontaneously take complete hold. I had one of those moments just after the series of heavy rains and powerful winds our region encountered some days ago. Previously, my luck with weather at the NSR had been rather poor. Each time, the temps were either nearing a hundred degrees or only just above freezing, making a full on adventure crossing muddy waters and crawling atop unshaded gravel beds too much to handle. I had yet to experience
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Largest Cretalamna appendiculata-type shark teeth
bthemoose posted a topic in General Fossil Discussion
I've been wondering how large teeth from Cretalamna appendiculata-type sharks could get. In their examination/further classification of these sharks, Siversson et al. depict several teeth that are a good deal larger than an inch/25.4 mm, including a first upper anterior of C. borealis that they note may have originally reached 38-40 mm in height (though with a broken tip is shorter than that now). From a marketplace perspective, C. appendiculata type teeth measuring an inch or larger appear somewhat uncommon, though they pop up from time to time. My question for shark teeth experts- 7 replies
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On Wednesday, November 30th, I took yet another trip to my micromorph spot in the Graysonites wacoense Zone of the Grayson Marl Formation, Washita Group of north Texas (Lower Cenomanian, ~97mya), laterally equivalent to the Waco Pit in the Del Rio Fm. further south. This time I focused mainly on looking for shark teeth which was a massive success, and I ended up finding a few new species to add to my faunal list for this location as well. The first find of the day was this nice small lateral Cretalamna catoxodon (Otodontidae) shark tooth, the most common shark species at this site:- 22 replies
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- graysonites wacoense zone
- grayson marl
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I picked up the shark tooth below a while back, labeled as Cretalamna borealis. I'm not very familiar with the species--does this ID appear to be correct? The label that came with the tooth says it was found near Stary Oskol, Belgograd Oblast, Russia, and that it's Upper Albian in age from the Kursk Osteolite member of the Seversk Sandstone formation. The tooth measures 38.6 mm along the slant. One of the root corners is missing and there's some hard matrix still cemented to the tooth near the root margin of the lingual side. @ThePhysicist, I think this one might be a D
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From the album: My collection in progress
Cretalamna biauriculata Wanner 1902 Location: Morocco Age: 72-66 Mya (Maastrichtian, Upper Cretaceous) Measurements: 1,8x2,8 cm Kingdom: Animalia Phylum: Chordata Subphylum: Vertebrata Class: Chondrichthyes Subclass: Elasmobranchi Superorder: Selachimorpha Order: Lamniformes Family: Otodontidae -
After spending a great deal of time in the house lately do to COVID and days and days of rain, I took the family on a nice leisurely walk to our favorite hunting spot on this beautiful North Texas day. While the kids wwere off collecting some beautiful Turitellas and oysters, I had only one thing on the mind, shark teeth. Cretalamna seems to dominate this site, however some large Cretodus semiplicatus have been found. A Ptychodus latissimus and 2 Plesiosaur teeth have also been found at the site, filling us with hope on each trip for an incredible find. The trip was a p
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From the album: Post Oak Creek
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- post oak
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Shark Teeth - Otodus, Cretalamna, Archaeolamna, Serratolamna or......??
Gareth_ posted a topic in Fossil ID
Hey all Shark teeth confuse me.... it seems the more I know, the less I know! The small rock and fossil shops I visit (when I can get near them - no shops near home) often sell shark teeth labeled Otodus (O. obliquus, these shops usually just give the Family name - Mosasaur, Spinosaur, Otodus etc). This is the only shark tooth I've been commonly exposed to "in the flesh". I've done a bit of digging on the net and now I'm not sure all teeth I have seen (and purchased) are Otodus - which is fine with me, I just like to be accurate. I have one which I was told is Cretalamna, it def -
I got these 2 shark teeth a few years ago. They are from Khouribga, Morocco I labeled them as Cretalamna appendiculata and Cretaceous-Eocene as I saw several Cretalamna appendiculata labeled sometimes as Eocene and sometimes Cretaceous. Does anyone know if its the correct species or how to identify shark teeth from Khouribga?
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From the album: Post Oak Creek
Nothing extraordinary, but I found an area with several chunks of matrix with teeth in them. -
From the album: Post Oak Creek
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Hi everyone. This is my first post (the second one actually, after greetings:). I was wondering the correct identification for these two shark tooth. They come from Balegem (Oosterzele, Belgium), I don't have any other information about the period. I bought them on a market oline as "lamna appendiculata" (it should be a synonim for "Otodus Appendiculatus" (Agassiz, 1843) (??)). Size: 2/2.5cm. I'd appreciate a lot your opinions about that. Thanks in advance. gian.
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I found the tooth below this morning at Douglas Point (Aquia Formation, Paleocene) in Maryland. The cusp is fairly narrow, it's missing one cusplet and the other is small and/or worn down. But between the prominent lingual protuberance and what looks to me like a small bourlette, I'm getting an Otodus obliquus vibe. What do you think? I also found a tiny Cretalamna appendiculata -- just over a quarter of an inch.
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From the album: Cenomanian Shark Teeth and other Marine Fauna, Ryazan Oblast, Russia
Cretalamna sp. A juvenile specimen. Could be an Eostriatolamia sp., I'm unsure. -
From the album: Cenomanian Shark Teeth and other Marine Fauna, Ryazan Oblast, Russia
Cretalamna sp. I could be wrong, it is a peculiar positional tooth. -
Hello everyone, I was wondering what the Maximum size for a late Cretaceous Cretalamna was? I have this tooth from Mississippi which clocks in at 1 29/32” (with root chipping), and can’t find much information as to the largest size that the genus reached in the Cretaceous.
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Sold as Cretalamna, it is from the Tambov Region of Russian. Cenomanian. I found this to be an interesting tooth though I am not convinced the ID is accurate. @Chase_E has a gallery of teeth from this region and a couple of other locations from Cenomanian Russia. Using those posts as a guide, I believe the tooth may be a Cretoxyrhina, perhaps C. vraconensis. I see quite a bit of similarity with a couple of Chases teeth but I am using one as comparison in this post. I could be, and probably am, wrong about that assessment lol Any input is welcomed !!
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I’ve been working on getting all of our shark teeth properly identified so I went back to a few teeth from the Demopolis Formation. These are from the Frankstown location in Mississippi. The first one up is right around 1” and the little cusps are what initially confused me. Is this a Cretoxyrhina perhaps? I found some images of Cretoxyrhina with cusps that looked similar.
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From the album: Cretaceous Shark Teeth
Cretalamna borealis from Stary Oskol, Russia -
From the album: Cretaceous Shark Teeth
Cretalamna borealis from Stary Oskol, Russia -
Some finds from a few recent trips to a couple different spots.
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From the album: Cenomanian Shark Teeth and other Marine Fauna, Ryazan Oblast, Russia
Cretalamna sp. (Glickman 1958). Slant length indicated by longest side. I have described this tooth as Cretalamna sp. as no Cretalamna have been properly described from the area (to my knowledge). -
From the album: Cenomanian Shark Teeth and other Marine Fauna, Ryazan Oblast, Russia
Cretalamna sp. (Glickman 1958). Slant length indicated by longest side. I have described this tooth as Cretalamna sp. as no Cretalamna have been properly described from the area (to my knowledge). -
From the album: Cenomanian Shark Teeth and other Marine Fauna, Ryazan Oblast, Russia
Cretalamna sp. (Glickman 1958). Slant length indicated by longest side. I have described this tooth as Cretalamna sp. as no Cretalamna have been properly described from the area (to my knowledge). -
From the album: Cenomanian Shark Teeth and other Marine Fauna, Ryazan Oblast, Russia
Cretalamna sp. (Glickman 1958). Slant length indicated by longest side. I have described this tooth as Cretalamna sp. as no Cretalamna have been properly described from the area (to my knowledge).
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