| Eotypotherium Temporal range: Early Miocene
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Scientific classification 
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| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Mammalia |
| Order: | †Notoungulata |
| Family: | †Mesotheriidae |
| Genus: | †Eotypotherium Croft, Flynn & Wyss, 2004 |
| Species: | †E. chico
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| Binomial name | |
| †Eotypotherium chico Croft, Flynn & Wyss, 2004
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Eotypotherium is an extinct genus of mammal, belonging to the suborder Typotheria. It lived during the Early Miocene. Its fossilized remains were discovered in the Chucal Formation, in the Chilean altiplano, near the Salar de Surire, in South America.[1]
Etymology
[edit]The name Eotypotherium is composed of the greek prefix "Eo-", meaning "dawn", and of the suffix "-typotherium", an invalid name for the genus Mesotherium, which gave its name to the suborder Typotheria. This name was given due to the relative antiquity of this taxon compared to other Mesotheriidae.[1]
Description
[edit]The genus is known from various remains of small-sized skulls, with the notable absence of a well-developed zygomatic plate. The first upper incisor presents a groove in its lingual part.[1]
Holotype
[edit]The holotype, SGOPV 5157, held by the Chilean National Museum of Natural History in Santiago de Chile, includes the right half of a face, with the maxilla and the right zygomatic arch.[1]
Well, that’s interesting to know that Psilotum nudum are known as whisk ferns. Psilotum nudum is the commoner species of the two. While the P. flaccidum is a rare species and is found in the tropical islands. Both the species are usually epiphytic in habit and grow upon tree ferns. These species may also be terrestrial and grow in humus or in the crevices of the rocks.
View the detailed Guide of Psilotum nudum: Detailed Study Of Psilotum Nudum (Whisk Fern), Classification, Anatomy, Reproduction