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Hello all! Found this tiny bit in my Post Oak Creek (Tx Cretaceous) Micro matrix. I am just not sure what it might be...it looks like a claw, but the hole in the back has me curious. Any thoughts? It's aprox 3 mm Thanks!
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From the album: Texas Cretaceous Fossils: Crustaceans
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From the album: Texas Cretaceous Fossils: Crustaceans
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We got a donation at work of a lot of little finds from post oak creek Texas. I’m not familiar with the site at all and the labels for these appear to have gotten wet some time in the past. I looked at the book on Cretaceous sharks and rays of Texas and it made me more and more confused. Would love any help to get these relabeled. If not, they’ll sit for a decade, be thrown out or given away here are my really unsure ideas- 1. Texatrygon sp. or ptychodus sp. 2. Pseudocorax sp. 3. Not enough there ? 4. Not enough there ? 5. Goblin ? 6. Carcharias sp. 7. Carcharias sp. 8. Carcharias sp. 9. Not positive enough to guess 10. Carcharias sp. 11. Hybodus sp. 12. Not enough there ? 13. Ptychodus sp. 14. Too broken ? 15. Ptychodus sp. 16. Too broken ? 17. Fish tooth? 18. Enchodus tooth 19. Drum tooth? Not a vert. The bottom is flat and shiny 20. Small fish tooth 21. Slag? Super shiny in person 22. Stumped here. Bone? Coprolite? Straight shelled cephalopod? Just rocks ?
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From the album: Post Oak Creek
P. atcoensis was a rare species of durophagous shark that lived during the Late Cretaceous. Its contemporary P. whipplei was far more abundant and tended to have a higher, bullet-shaped crown; this disparity in morpholgy suggests they may have preyed on different things. From Shawn Hamm's thesis: "Diagnosis. Tooth Crown high and rounded, oriented 90° to the margin area in the medial files; crown crossed by six to eight thick, chevron-shaped parallel ridges; lateral files have moderately high crowns with four to five parallel ridges; posterior teeth are low crowned with two to three ridges; differs from other species as the ridges are thick, chevron shaped and terminate sharply at a coarsely granular and concentric margin."-
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From the album: Post Oak Creek
P. atcoensis was a rare species of durophagous shark that lived during the Late Cretaceous. Its contemporary P. whipplei was far more abundant and tended to have a higher, bullet-shaped crown; this disparity in morpholgy suggests they may have preyed on different things. From Shawn Hamm's thesis: "Diagnosis. Tooth Crown high and rounded, oriented 90° to the margin area in the medial files; crown crossed by six to eight thick, chevron-shaped parallel ridges; lateral files have moderately high crowns with four to five parallel ridges; posterior teeth are low crowned with two to three ridges; differs from other species as the ridges are thick, chevron shaped and terminate sharply at a coarsely granular and concentric margin."-
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From the album: Post Oak Creek
When I initially found this I was hoping it was Mosasaurid, however upon some reading, I decided it's more likely to be a sister group squamate. In particular, the labial sulcus convinced me it is probably C. crassidens (see Caldwell 1999). It is however much larger than any Coniasaurus teeth I've seen published.-
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From the album: Squamates
When I initially found this I was hoping it was Mosasaurid, however upon some reading, I decided it's more likely to be a sister group squamate. In particular, the labial sulcus convinced me it is probably C. crassidens (see Caldwell 1999). It is however much larger than any Coniasaurus teeth I've seen published.-
- coniasaurus
- coniasaurus crassidens
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From the album: Post Oak Creek
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From the album: Post Oak Creek
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From the album: Post Oak Creek
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From the album: Post Oak Creek
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From the album: Post Oak Creek
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From the album: Post Oak Creek
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From the album: Post Oak Creek
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From the album: Post Oak Creek
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From the album: Post Oak Creek
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From the album: Post Oak Creek
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From the album: Post Oak Creek
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From the album: Post Oak Creek
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From the album: Post Oak Creek
Small "bamboo" shark teeth, about 1 mm tall.-
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From the album: Post Oak Creek
Tiny sawskate oral teeth - less than 1 mm in size.-
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From the album: Post Oak Creek
The shell of a "foram" (test). It looks like a snail or ammonite, but is actually a marine protist (only found in the oceans).-
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From the album: Post Oak Creek
A small "bamboo" shark, just 1 mm tall.-
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From the album: Post Oak Creek
Various denticles from sharks and rays sitting on the face of a dime.-
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