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・ Drents-Friese Wold National Park
・ Drentsche Aa
・ Drentse Courant
・ Drentse Patrijshond
・ Drentwede
・ Drenča
・ Drenčec
・ Drepana
・ Drepana (moth)
・ Drepana arcuata
・ Drepana curvatula
・ Drepana dispilata
・ Drepana falcataria
・ Drepana pallida
・ Drepana rufofasciata
Drepanaspis
・ Drepane (genus)
・ Drepane longimana
・ Drepane punctata
・ Drepanidae
・ Drepanidini
・ Drepaninae
・ Drepanis
・ Drepano
・ Drepano, Achaea
・ Drepanoblemma
・ Drepanocaryum
・ Drepanocerus
・ Drepanodes
・ Drepanodia


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Drepanaspis : ウィキペディア英語版
Drepanaspis

''Drepanaspis'' is an extinct genus of primitive jawless fish from Early Devonian marine strata of Europe. ''D. gemuendenensis'', of the Hunsrück lagerstätte is the best known, and most thoroughly studied species, as it is known from several articulated specimens.

It was a flattened creature with a heavily armored body, superficially ray-like in appearance. Its mouth faced upwards, unlike most other Heterostracans, which had downward-facing mouths. ''Drepanaspis'' also had small, widely spaced eyes. It is presumed to have foraged the ocean floor for food.
This frying-pan shaped fish may have been the ancestor of the giant, meter-long, meter-wide Psammosteid heterostracans of the late Devonian.
==References==



抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)
ウィキペディアで「Drepanaspis」の詳細全文を読む



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