Xibalbaonyx: Research Database Theropoda · Cretaceous · Unknown Research Note: Xibalbaonyx was a theropoda from the Cretaceous of Unknown, providing important data on prehistoric life and ecosystem dynamics. Research Finding Status Grade Year Method Citation Impact Stinnesbeck Frey Olguín 2017: Xibalbaonyx and related taxa PalZ Confirmed A 2017 Fossil Stinnesbeck Frey Olguín, PalZ … Read more
In Depth Compared to other giant ground sloths Mylodon is closely related to Glossotherium. While analysis of dung samples has confirmed it was a herbivore, Mylodon would have also been especially resilient to attack from predators due to the presence of thick bony plates called osteoderms. These osteoderms were just under the skin and in … Read more
Paramylodon: Research Database Theropoda · Cretaceous · Unknown Research Note: Paramylodon was a theropoda from the Cretaceous of Unknown, providing important data on prehistoric life and ecosystem dynamics. Research Finding Status Grade Year Method Citation Impact MCAFEE 2009: Paramylodon and related taxa Zoological Journal of the Linnean Society Confirmed A 2009 Fossil MCAFEE, … Read more
Megatherium: Research Database Megalonychidae · Pleistocene (~2 MYA – 10,000 YA) · South America Research Note: Megatherium is one of the largest land mammals to have existed, known from excellent fossil material across South America. Richard Owen’s 1861 memoir on Megatherium was one of the earliest comprehensive studies of an extinct mammal. Direct papers on … Read more
Eremotherium a.k.a. Panamerican Ground Sloth: Research Database Theropoda · Cretaceous · Unknown Research Note: Eremotherium a.k.a. Panamerican Ground Sloth was a theropoda from the Cretaceous of Unknown, providing important data on prehistoric life and ecosystem dynamics. Research Finding Status Grade Year Method Citation Impact Cartelle De Iuliis 1995: Eremotherium a.k.a. Panamerican Ground Sloth … Read more
In Depth Further Reading – Third contribution to the Snake Creek Fauna. – Bulletin of the American Museum of Natural History 50:59-210. – W. D. Matthew – 1924. – The Ground Sloth Megalonyx from Pleistocene Deposits of the Old Crow Basin, Yukon, Canada. – Arctic (Calgary, Alberta: The Arctic Institute of North America) 53 (3): … Read more