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Showing results for tags 'cretaceous sharks'.
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From the album: Sharks
Just a handful of Cretaceous species, most from North Texas. The sea that bisected North America ~85 million years ago played host to a diverse and burgeoning ecosystem that supported many species of sharks. It was likely due to specialization that allowed these sharks to all live in the same place and time. -
Hey all, I'll try my best to be brief but detailed in my question, but I'd like it to be a discussion as well, if there is one to be had. From what I understand, the Western Interior Seaway had what appeared to be too many large, active predators for a similar environment to support, especially when one considers how shallow the seaway was. There were the many species of Mosasaurs, with other large predators like Xiphactinus, with the typical western interior seaway sharks as well. This would make me think that that there are two possible outcomes - either an absolutel- 11 replies
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Any tips to differentiating Cretodus and Cretolamna teeth?
Jared C posted a topic in General Fossil Discussion
Hey ya'll - despite my best efforts I have a very tough time telling apart the teeth of Cretodus and Cretolamna - most of what I gather so far is that it *seems* that the blade on a cretodus is sometimes slightly longer and less robust compared to cretolamna, but this has large variation and might not even be a real pattern worth noting. Any tips? -
Scientific information about Cardabiodon
fossilsonwheels posted a topic in General Fossil Discussion
I had never heard of Cardabiodon prior to joining The Fossil Forum. I understand that it is a fairly recently described shark, I believe around 20 years or so. I have no intention of adding a tooth to our fossil line up. I have not seen many for sale and the one I did see was very expensive. It is still an interesting shark to consider adding to the presentation, even without having a fossil to represent it. It is a mystery to me. I know very little about it but a giant Cretaceous era shark would be of interest to the kids I am pretty sure. Can anyone point me in the direction of m
