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Hello, I bought this tooth from a popular fossil selling website where it was labelled as 'Postosuchus?' but the description says it is from the Redonda Formation which has not had a Postosuchus formally described from it. I'm aware there a few other species from this formation that are also pseudosuchians and could have a similar type of tooth, which I do not mind if it is one of them. Although, I absolutely love Postosuchus as a creature and I hoping that is what it is, though I know it's definitely unlikely. From my research, I assume it's Redondasaurus but this particular site has several other teeth from this formation specifically labelled as Redondasaurus so I assume there is a reason why they labelled this one and a few others differently. I've seen small teeth like this labelled as Coelophysis but I know that's extremely unlikely because it's not recurved but if it was that would be super cool! I don't have the greatest lighting equipment in my house to take pictures of it, but I can provide some shotty ones if that would be helpful! The tooth is 0.74 inches long, so quite small. The picture below is from the website I bought it from and it shows the detail much better than a photo I could take. Please don't be afraid to disappoint me! I just want to know what this tooth is!

Hi everyone! I want to introduce some new additions to my teeth collections. 1. Nodosaur tooth from Judith River Formation This tooth is from Hill Co. Montana. Has nice set of serrations, and 10 mm wide. There are two genus of Nodosaur known from Judith River F. : Edmontonia and Palaeoscincus, thus, this is a Nodosaurid indet. 2. Pygmy sperm whale (Kogiopsis) tooth from Hawthorn Formation This tooth has no tip, but have enamel and root. This is slightly larger than 3 inches.

Hi. I was wondering if anyone could help me narrow down the identification of this phytosaur tooth. Is it possible to determine the genus or species from just a tooth? I think Redondasaurus may be a potential match, but it looks like there are a few archosauriforms in the Redonda formation. Thanks for any help. Phytosaur Tooth Triassic, Norian Redonda Formation Quay County, New Mexico CH: 32 mm CBW: 11 mm CBL: 12 mm Distal: 3 serrations/mm Mesial: 3.5 serrations/mm