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Showing results for tags 'maastrictian'.
Found 6 results
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Number of Tyrannosauridae genera in Western and Eastern North America during the Maastrichtian Cretaceous
Joseph Fossil posted a topic in General Fossil Discussion
Along with an interest in Pennsylvanian fish diversity, I've also had an interest (like many others studying Paleontology) in the diversity of Dinosaur genera during the Cretaceous era (particularly the Theropod diversity in North America during the Maastrichtian period 72.1-66 Million years ago). Compared to the preceding Campanian period (83.6-72.1 Million years ago), I've noticed there is a slightly less number of known Tyannosauridae genera in Western North America (at the time a separate continent known as Laramidia). I've come up with a list of confirmed known and possible Tyrannosaurida -
I have found this claw from a site in Eastern North Carolina which has maastrictian and campanian material. Does anyone know if this is dinosaur ? Some dinosaur material has been found here in the past. Or is this crocodile or turtle maybe? It has the blood grooves on each side, unfortunately the tip is broken off. It is slightly hollow with an oval cavity. I tried to capture as much detail as I could with pictures. Thanks for your help.
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I purchased these as Ingenia yanshini which I think became Ajancingenia, which then became and is currently Heyuannia. The formation provided is the Djadochta Formation, but that doesn't seem right since Ingenia/Heyuannia is not found there as far as I've checked. Unfortunately, there isn't provenance other than Mongolia attached to them to say whether they come from the Barun Goyot Formation where Heyuannia yanshini is found. While I'm not necessarily doubting the original ID, I just don't really know. I'm not expecting a positive or diagnostic ID to the genus level, but I wanted
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This is a very rare find at this site. Although two members of the genus have been reported along the C and D Canal, this is the only one I've found at Reedy Point in 17 years of collecting there! PLEASE NOTE: It is possible that this was carried there during frequent human activity - perhaps in a tire tread from a vehicle that came from another site along the canal. This specimen has a 4mm pearl bud near the hinge on the interior side of the valve. Because there are more than one species of Pteria at the canal and this shell is heavily worn, I am refrainin
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From the album: Marine reptiles and mammals
A little collection of assorted mosasaur fossils from 2 different places that I got when I first started collecting. 2 different types of vertebrae, one is mosasaur, and the other is a questionable claim of mosasaur, a corprolite that was claimed to be that of a mosasaur, a tooth, & 7 rib fragments. 2 ribs have predation marks, as well as the large vertebra. The large vert has a round tooth indent on the very center. The 2nd rib down has tooth scratches along the surfaces, & 3rd rib down has a round tooth indent in the center, which is probably what caused a strip across the middle to -
Hi, I found those pieces in a Maastrichtian limestone strata of the SE of the Pyrenees. Size (large): 1 - 25 mm 2 - 37 mm 3 - 39 mm My guess is genus Ceratostreon, and specifically Ceratostreon pliciferum for Nr.3. Thanks,
