Jump to content

Amphoraspis

From Wikipedia, the free encyclopedia

Amphiaspis argo
Temporal range: Early Devonian
Amphoraspis stellata reconstruction
Scientific classification
Kingdom:
Phylum:
Class:
Subclass:
Order:
(unranked):
Superfamily:
Family:
Genus:
Amphoraspis
Species:
A. stellata
Binomial name
Amphoraspis stellata
Novitskaya & Karatayute, 1989

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.[1] 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

[edit]
  1. ^ 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