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Amphoraspis
''Amphoraspis stellata'' is an amphiaspidid heterostracan in the family Amphiaspididae. Its fossils are restricted to early Devonian-aged marine strata of the Taimyr Peninsula, Siberia. ''A. stellata'', as with all other amphiaspidids, is thought to have been a benthic filter feeder that lived on top of, or buried just below the surface of the substrate of hypersaline lagoon-bottoms.
So far, ''A. stellata'' is known from at least one, 14 centimeter-long, broad and dorsally rounded cephalothoracic armor that is shaped vaguely like, as the generic name suggests, an amphora.〔Novitskaya L.I.; Karatayute Talimaa V.N., 1989: New amphiaspididae from the lower devonian deposits in taimyr russian sfsr ussr. Paleontologicheskii Zhurnal.(3): 112-116〕 The animal had small, possibly degenerate eyes that were flanked laterally by a small, crescent-shaped branchial opening. The small eyes, in turn, laterally flank a small, slit-shaped mouth at the center of the anterior-most end of the cephalothorax. The external surface of the armor has a unique micro-ornamentation of a pattern of star-like shapes.
==References==
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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