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Megalonychidae is a group of sloths including the extinct Megalonyx. Megalonychids first appeared in the early Oligocene, about 35 million years (Ma) ago, in southern Argentina (Patagonia). There is actually one possible find dating to the Eocene, about 40 Ma ago, on Seymour Island in Antarctica. They first reached North America by island-hopping across the Central American Seaway, about 9 million years ago, prior to formation of the Isthmus of Panama about 2.7 million years ago. Some megalonychid lineages increased in size as time passed. The first species of these were small and may have been partly tree-dwelling, whereas the Pliocene species were already approximately half the size of the huge Late Pleistocene Megalonyx jeffersonii from the last ice age.
Pantolambda is an extinct genus of Paleocene pantodont mammal. Pantolambda lived during the middle Paleocene, and has been found both in Asia and North America.
Ailuravus is a genus of prehistoric rodents in the family Ischyromyidae.
Fossilworks is a portal which provides query, download, and analysis tools to facilitate access to the Paleobiology Database, a large relational database assembled by hundreds of paleontologists from around the world.
Macrocephalochelys is an extinct genus of turtles in the family Chelydridae. It was first described from a partial skull from the Pliocene found in Ukraine by Piboplichko and Taraschchuk in 1960. It was assigned to the family Chelydridae by R. L. Carroll in 1988 although it had been hypothesised to belong in Chelydridae by Chkhikvadze in 1971.
Gomphodontosuchus is an extinct genus of cynodonts. It was created to describe the species Gomphodontosuchus brasiliensis.
The Paleobiology Database is an online resource for information on the distribution and classification of fossil animals, plants, and microorganisms.
The Gildehausen Sandstone Formation is a geologic formation in Germany. It preserves fossils dating back to the Cretaceous period.
The Oerlinghausen Formation is a geologic formation in Germany. It preserves fossils dating back to the Cretaceous period.
The Velbert Formation is a geologic formation in Germany.
The Wallen Slate Formation is a geologic formation in Germany. It preserves fossils dating back to the Devonian period.
The Schaumkalk Formation is a geologic formation in Germany. It preserves fossils dating back to the Triassic period.
Tasbacka is an extinct genus of sea turtle containing several species.
References
- Various Contributors to the Paleobiology Database. "Fossilworks: Gateway to the Paleobiology Database" . Retrieved 17 December 2021.
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Fossiliferous stratigraphic units of the countries and dependencies of Europe | ||
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| Sovereign states |
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Dependencies and other territories |
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1 Can also be considered as being in Asia. | ||