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Showing results for tags 'creteaceous'.
Found 7 results
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The North American Tyrannosauroidea Species from the Aptian-Santonian Cretaceous
Joseph Fossil posted a topic in General Fossil Discussion
The Tyrannosaur Dinosaurs (Tyrannosauroidea) inhabited North America from 152 Million Years ago during the Late Jurassic era up until 66 Million Years ago during the Late Cretaceous era. https://www.app.pan.pl/article/item/app20110141.html However, there is a relatively large geologic gap between the time of the Late Jurassic to the Santonian-Campanian stages of the Cretaceous (when the the oldest known Tyrannosaurid Lythronax (Late Creteaceous, 81.9-81.5 Million Years ago) emerged) in terms of the number of Tyrannosauroidae confirmed in North America. However, thi -
Hello everyone! I have recently been working on a project which includes precisely identifying shark teeth from the Campanian of the middle east. digging in the literature just made it clear that its REALLY messy. There is one promising resource however - Henri Capetta's guide to all mesozoic elasmobranch teeth. Does anybody here have the book or know someone who may have a copy? It would be a TREMENDOUS help! Book: Cappetta H. Chondrichtyes II. Mesozoic and Cenozoic Elasmobranchii: teeth Handbook of Paleoichthyology 3E, second edition,Schweizerbart, Stuttgart, 1–193, 2012.
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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 -
A while back, I was researching the number of likely Tyrannosauroidea dinosaurs that inhabited the Southern Hemisphere (I know this is a very controversial subject) in the Early Cretaceous for an extra credit research paper I was doing for my freshmen year college geology class. As I was looking for data for the paper, I found an unusual data entry on the paleontological database website fossilworks.org - It lists Tyrannosauridae remains from Jurassic Madagascar. http://www.fossilworks.org/cgi-bin/bridge.pl?a=collectionSearch&collection_no=55391 The specimen
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- tyrannosaur
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A tooth of early tyrannosauroidea members from northern China
Agent_Zigzag posted a topic in Member Collections
Greetings! This is my first share on this forum. I was looking through my collections, and one thing popped my mind was this tooth -- a tooth of Xiongguanlong baomoensis，which i found in 2014 but I could not give a very conclusive identification until earlier this year. I was lucky enough to travel along with a group of scientists into the Gobi desert in Northern China. That day we was traveling in the border zone of three different provinces, basically middle of nowhere. This basin is where most dinosaur from Gansu found -- including X. baomoensis, Auroraceratop rugo -
We managed to get out to the NJ brooks today after two weeks of heavy rains, we wanted to try out a new spot we hadn't been to before in the brook and the results did not disappoint! We wound up with a good assortment of quality specimens including many teeth taking their place in our collection as the highest quality/largest - total tripmakers! We were immediately met by a doe on the trail down, Luck? one may think After we picked a suitable spot to settle in and sift, this came up in the first scoop Immediately followed by this
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- ramanessin brook
- holmdel
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I know the cretaceous period ended 65-66 million years ago but when exactly did it end? Did it end as soon as the meteor touched the Earth's surface? As soon as all dinosaurs went extinct? After a certain amount of species went extinct? There may not be a definitive answer but if it was up to you where would you decide where the end of the cretaceous meets the beginning of the paleogene?
