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Paleontology in Massachusetts
Paleontology in Massachusetts refers to paleontological research occurring within or conducted by people from the U.S. state of Massachusetts. The fossil record of Massachusetts is very similar to that of neighboring Connecticut.〔 During the early part of the Paleozoic era, Massachusetts was covered by a warm shallow sea, where brachiopods and trilobites would come to live. No Carboniferous or Permian fossils are known from the state. During the Cretaceous period the area now occupied by the Elizabeth Islands and Martha's Vineyard were a coastal plain vegetated by flowers and pine trees at the edge of a shallow sea. No rocks are known of Paleogene or early Neogene age in the state, but during the Pleistocene evidence indicates that the state was subject to glacial activity and home to mastodons. The local fossil theropod footprints of Massachusetts may have been at least a partial inspiration for the Tuscarora legend of the Mosquito Monster or Great Mosquito in New York. Local fossils had already caught the attention of scientists by 1802 when dinosaur footprints were discovered in the state. Other notable discoveries include some of the first known fossil of primitive sauropodomorphs and ''Podokesaurus''. Dinosaur tracks are the Massachusetts state fossil.
==Prehistory==
No Precambrian fossils are known from Massachusetts, so the state's fossil record does not begin until the Paleozoic era. During the early part of the era the state was covered by a warm shallow sea. The local brachiopods and trilobites left behind their fossils. The state's Carboniferous rocks are metamorphosed and therefore don't have any fossils. The Permian occupies a gap in the state's rock record because at that time local sediments were being eroded away rather than deposited. During the Cretaceous period the area now occupied by the Elizabeth Islands and Martha's Vineyard were a coastal plain near a shallow sea. Flowering plants and pine trees grew on this plain. The ensuing Tertiary period of the Cenozoic era is another gap in the state's rock record. Nevertheless, during the Pleistocene epoch glaciers intruded into the state. The sediments they deposited preserved mastodons and molluscs at Cape Cod.〔
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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