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Marmoretta
''Marmoretta'' is an extinct genus of small basal lepidosauromorph reptile known from the Middle Jurassic (late Bathonian age) of Oxfordshire, southern England and Skye, Scotland. It contains a single species, ''Marmoretta oxoniensis''.
==Discovery==
''Marmoretta'' is known from holotype BMNH R.12020, the anterior region of a right maxilla. Many specimens are referred to the species from the type locality, and together represent a nearly complete skull. All specimens are housed in the Natural History Museum. They were collected from the Mammal Bed of the Forest Marble Formation, at Kirtlington, Oxfordshire, which has yielded a rich assemblage of small vertebrates including mammals, frogs, salamanders and other small reptiles. ''Marmoretta'' is very common in that locality but its remains are fragmentary. In 1994, additional specimens of ''Marmoretta'' were described from the Kilmaluag Formation (previously known as the Ostracod Limestones) of the Great Estuarine Group in Skye. Thesa material of ''Marmoretta'' includes the first associated skull and postcranial remains. They confirm the original description and reconstruction, and provide additional support for position of ''Marmoretta'' as the sister taxon of Lepidosauria.〔 Both localities dates to the Late Bathonian stage of the Middle Jurassic period, about 166.2-164.7 million years ago.〔〔
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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