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Showing results for tags 'cretaceou'.
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PaleoMexico posted a topic in Fossil IDI have a material from the late Mesozoic from northeastern Mexico, it could be ungual from a dinosaur, what do you think?
Theropod Indet. Tooth
Omnomosaurus posted a topic in Fossil IDHi folks! Received a new theropod indet. tooth today from the ever exciting Kem Kem. I was tentatively leaning towards a Carcharodontosaurid indet i.d., in line with morph type 3 in the always handy guide from @Troodon, but a few properties of the tooth have me wanting to get some extra opinions. Measurements: Crown Height: 27mm Crown Base Length: 10mm Cross Section: 7mm Mesial serrations: 5/mm (midline) Distal serrations: 3/mm (area just above damage at midline) There is a neat repair at the tip, a bit of d
Fossils Reveal How Much Shorter Days Were 70 Million Years Ago
Oxytropidoceras posted a topic in Fossil NewsAncient Shell Has Revealed Exactly How Much Shorter Days Were 70 Million Years Ago https://www.sciencealert.com/old-shell-reveals-earth-s-days-were-half-an-hour-shorter-70-million-years-ago de Winter, N.J., Goderis, S., Van Malderen, S.J., Sinnesael, M., Vansteenberge, S., Snoeck, C., Belza, J., Vanhaecke, F. and Claeys, P., Sub‐daily scale chemical variability in a Torreites sanchezi rudist shell: Implications for rudist paleobiology and the Cretaceous day‐night cycle. Paleoceanography and Paleoclimatology, p.e2019PA003723 https://agupu
Pliotoxasters have me puzzled. Species ID help please!
JamieLynn posted a topic in Fossil IDI am TRYING to figure out my pliotoxasters. I think i have three different species and am hoping for some confirmation or information! I grouped them into similar seeming "batches" and think these are the ID's but would appreciate any help. All Texas Cretaceous, various formations, mostly Walnut I think. These I believe are Pliotoxaster whitei Side view: These I believer are Pliotoxaster comanchei Side view: These I think are Pliotoxaster inflatus: side view:
Belemnite with Phragmocone Still Attached
Jeffrey P posted a gallery image in Members Gallery
From the album: CretaceousBelemnitella americana (belemnite guard with phragmocone still attached) Upper Cretaceous Navesink Formation Monmouth Group Big Brook Colts Neck, N.J.