Search the Community
Showing results for tags 'ichthyosaur'.
-
Hi everyone I came across these teeth on our favorite site. It's listed as plesiosaur and ichthyosaur, but could the plesiosaur be a pliosaur tooth? The ridges are quite pronounced.. The teeth in this set were both found in the Seversk Sandstone in Belgorod, Kursk, Russia
- 8 replies
-
- ichthyosaur
- plesiosaur
-
(and 2 more)
Tagged with:
-
British marine reptile teeth, pliosaur? Ichthyosaur? Croc?
Per Christian posted a topic in Fossil ID
Hi everyone I came across this box of marine reptile teeth from: Age 200 million/Rhaetic bone bed. I don't have the measurements of the fossils unfortunately, but do anyone see plesiosaur and ichthyosaur teeth here? I'd love it if there's pliosaur but probably not.. -
From the album: Moscow region Late Jurassic vertebrates
15 mm, Fili Park, Volgian-Nikitini zone-
- 1
-
- fili
- ichthyosaur
-
(and 2 more)
Tagged with:
-
From the album: Moscow region Late Jurassic vertebrates
15 mm, Fili Park, Volgian-Nikitini zone- 1 comment
-
- 1
-
- fili
- ichthyosaur
-
(and 2 more)
Tagged with:
-
From the album: Moscow region Late Jurassic vertebrates
15 mm, Fili Park, Volgian-Nikitini zone-
- 1
-
- fili
- ichthyosaur
-
(and 2 more)
Tagged with:
-
Pliosaur tooth, or ophthalmosaurid ichthyosaur (Stary Oskol)
pachy-pleuro-whatnot-odon posted a topic in Fossil ID
Hi all, First off, this is not my fossil (though I own a large crow of similar morphology), but one I recently bumped into and found particularly curious. Why? Because it's morphology seems to contradict itself. Described as a Polyptychodon interuptus (no longer considered a valid genus; Madzia [2016]) from the Late Jurassic Volga Beds (?) of Stary Oskol, the tooth appears to have enamel folds consistent with what one might expect from an ophthalmosaurid ichthyosaur, such as Platypterygius sp.. The root, however, is smooth and round, with a hollow base, which, unlike the rectangular and "fibrous" roots more typical of ophthalmosaurid ichthyosaurs, is more indicative of pliosaur. Here are some pictures of the tooth. Unfortunately, as it was sold off by auction back in 2017, there's no chance of getting any better quality photographs: I know the seller is quite familiar with pliosaur teeth, so would be surprised if they identified the tooth wrongly. The ornamentation on the tooth, however, bugs me as not matching what I would expect for pliosaur, especially a brachauchenine species. Below are a schematics illustrating various tooth crown ornamentations amongst marine reptiles (figure 2 from McCurry et al. [2019]) and some examples of British brachauchenine pliosaur teeth (figures 3, 4, 5 and 6 from Madzia [2016]) for comparison. Tooth ornamentation in marine reptiles: A. Deinosuchus rugosus; B. Spinosaurus; C. Ichthyosaurus; D. Pliosauridae indet.; E. Globidens alabamensis; F. Hydrurga leptonyx; G. Mammalodontidae indet. Here's the only confirmed Stary Oskol pliosaur tooth I've been able to find as a reference for how the above translates to that location (source): And, finally, for completeness, some Stary Oskol platypterygiine ichthyosaur teeth: My questions to you are: Does this look like an ichthyosaur or pliosaur tooth to you, and why? I've heard, by word of mouth (i.e., got from a source that's not academic), that certain late ophthalmosaurid species developed root tooth roots. Can anybody confirm or deny this, if possible with academic reference? Thanks for your help! @RuMert @Anomotodon @paulgdls @PointyKnight @Mike from North Queensland @-Andy-- 13 replies
-
- 1
-
- ichthyosaur
- marine reptiles
- (and 6 more)
-
From the album: Late Jurassic ichthyosaurs from the Volga
-
- caudal
- ichthyosaur
-
(and 1 more)
Tagged with:
-
From the album: Late Jurassic ichthyosaurs from the Volga
-
- associated
- ichthyosaur
-
(and 1 more)
Tagged with:
-
From the album: Late Jurassic ichthyosaurs from the Volga
Possible parietal bone (water-worn)-
- ichthyosaur
- parietal
-
(and 1 more)
Tagged with:
-
From the album: Late Jurassic ichthyosaurs from the Volga
-
- fragment
- ichthyosaur
-
(and 1 more)
Tagged with:
-
From the album: Late Jurassic ichthyosaurs from the Volga
cervical, anterior and posterior dorsal, anterior and posterior caudal, apical -
From the album: Late Jurassic ichthyosaurs from the Volga
That's one heavy and pyritized ichthyosaur vertebra. Other examples on the right-
- dorsal
- ichthyosaur
-
(and 2 more)
Tagged with:
-
From the album: Late Jurassic ichthyosaurs from the Volga
-
- ichthyosaur
- matrix
-
(and 2 more)
Tagged with:
-
From the album: Late Jurassic ichthyosaurs from the Volga
-
- ichthyosaur
- presacral
-
(and 1 more)
Tagged with:
-
From the album: Late Jurassic ichthyosaurs from the Volga
-
- ichthyosaur
- in situ
-
(and 1 more)
Tagged with:
-
From the album: Late Jurassic ichthyosaurs from the Volga
-
- ichthyosaur
- pyrite
-
(and 1 more)
Tagged with:
-
From the album: Late Jurassic ichthyosaurs from the Volga
-
- caudal
- ichthyosaur
-
(and 2 more)
Tagged with:
-
From the album: Late Jurassic ichthyosaurs from the Volga
-
- cervical
- ichthyosaur
-
(and 1 more)
Tagged with:
-
From the album: Late Jurassic ichthyosaurs from the Volga
-
- dorsal
- ichthyosaur
-
(and 2 more)
Tagged with:
-
From the album: Late Jurassic ichthyosaurs from the Volga
Two caudal vert fragments, probably from the same individual-
- caudal
- ichthyosaur
-
(and 1 more)
Tagged with:
-
From the album: Late Jurassic ichthyosaurs from the Volga
-
- associated
- ichthyosaur
-
(and 1 more)
Tagged with:
-
From the album: Late Jurassic ichthyosaurs from the Volga
In comparison with a full-size human vertebra replica-
- human
- ichthyosaur
-
(and 2 more)
Tagged with:
-
From the album: Late Jurassic ichthyosaurs from the Volga
-
- cervical
- ichthyosaur
-
(and 1 more)
Tagged with:
-
From the album: Late Jurassic ichthyosaurs from the Volga
-
From the album: Late Jurassic ichthyosaurs from the Volga
4 neural arch facets