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Showing results for tags 'mid jurassic'.
Found 4 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 -
Likely/possible specimens of Tyrannosauroidea from the Southern Hemisphere (Jurassic-Early Late Cretaceous)
Joseph Fossil posted a topic in General Fossil Discussion
As a freshmen in College, I did a little extra credit report for my geology class about a controversial topic - Tyrannosauroidea diversity in the Southern Hemisphere during the Jurassic-Early Late Cretaceous periods. I was quite surprised at the amount of specimens I found. This diversity likely was the result of an early spread of the early tyrannosaur group Pantyrannosauria into Africa, Eurasia, and North America during the Jurassic and diversified once the land connecting these continents spread out more. Most of these species lived during the Early Cretaceous, though one or two exceptions -
Hi friends, can you help me with this? I went to Dhruma city, Bathonian , to the west of Riyadh and found a CRINOID like fossil. It was a surface find, it is 6 cm high, 4 cm wide at widest point, and 1 cm thick. could it be a holdfast or it is coral sp.? So what could it be?
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Hi everyone, It wasnt until i decided to take a macro photograph of this fossil bringing out some very distinctive details that the specimen in its matrix you are looking at is perhaps complete i can only think it may be a fish scale would anyone have any suggestions. Its from the Bathonian limestones / mid Jurassic / Lincolnshire / UK. Regards, Darren.
