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Abra – tentative report † Abra longicalla Acanthodesia † Acanthodesia oblongula † Acanthodesia savartii † Acantodesia † Acantodesia oblongula Illustration of a living Acipenser sturgeon Acipenser † Acrocoelum † Acrocoelum richardsi – type locality for species Acropora † Acropora palmata Acteocina † Acteocina canaliculata Acteon † Acteon danicus – type locality for ...
During the Cenozoic, mammals proliferated from a few small, simple, generalised forms into a diverse collection of terrestrial, marine, and flying animals, giving this period its other name, the Age of Mammals. The Cenozoic is just as much the age of savannas, the age of co-dependent flowering plants and insects, and the age of birds. [40]
This list of the prehistoric life of Maryland contains the various prehistoric life-forms whose fossilized remains have been reported from within the US state of Maryland. Precambrian [ edit ]
Maryland was home to one of the most significant Pleistocene mammal discoveries in American history: the early 20th century discovery of Pleistocene fossils in an Allegany County cave. The Miocene murex snail Ecphora gardnerae gardnerae is the Maryland state fossil. Astrodon johnstoni is the state dinosaur of Maryland.
The Eocene (IPA: / ˈ iː ə s iː n, ˈ iː oʊ-/ EE-ə-seen, EE-oh-[5] [6]) is a geological epoch that lasted from about 56 to 33.9 million years ago (Ma). It is the second epoch of the Paleogene Period in the modern Cenozoic Era.
The Quaternary (/ k w ə ˈ t ɜːr n ə r i, ˈ k w ɒ t ər n ɛr i / kwə-TUR-nə-ree, KWOT-ər-nerr-ee) is the current and most recent of the three periods of the Cenozoic Era in the geologic time scale of the International Commission on Stratigraphy (ICS), as well as the current and most recent of the twelve periods of the Phanerozoic eon. [3]
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A Cenozoic chronology based on mammal taxa has been defined on all the continents except Antarctica. [4]: 939 Because the continents have been separated through most of the Cenozoic, each continent has its own system. [5] Most of the units are based on assemblage zones, layers of strata that contain three or more distinctive fossils.