Fossil specimen of A. desiderata, Field Museum of Natural History
Scientific classification
Domain:
Eukaryota
Kingdom:
Animalia
Phylum:
Chordata
Infraphylum:
Agnatha
Class:
†Pteraspidomorphi
Subclass:
†Heterostraci
Order:
†Pteraspidiformes
Genus:
†Astraspis Walcott, 1892[1]
Type species
Astraspis desiderata
Walcott 1892
Species
†A. desiderata Walcott 1892
†A. splendens (Ørvig 1958) Smith, Sansom & Smith 1995
Astraspis ('star shield') is an extinct genus of primitive jawless fish from the Ordovician of Central North America including the Harding Sandstone of Colorado and Bighorn Mountains of Wyoming. It is also known from Bolivia.[2] It is related to other Ordovician fishes, such as the South American Sacabambaspis, and the Australian Arandaspis.
^C. D. Walcott. 1892. Preliminary notes on the discovery of a vertebrate fauna in Silurian (Ordovician) strata. Geological Society of America Bulletin 3:153-172
^Sacabambaspis janvieri. PY Gagnier - Vertébré ordovicien de Bolivie, 1993
Astraspis ('star shield') is an extinct genus of primitive jawless fish from the Ordovician of Central North America including the Harding Sandstone of...
ventral shield of their head armor. They are represented by a single genus, Astraspis, including possibly two species, A. desiderata and A. splendens but their...
that consist dorsal and ventral webs and an elongated notochordal lobe. Astraspis Sacabambaspis "Pteraspidomorphi". Retrieved 28 October 2013. Ritchie,...
competed by newer Mesozoic taxa. Ostracoderms †Pteraspidomorphi (extinct) Astraspis †Pteraspidomorphi is an extinct group of early jawless fish. The fossils...
1080/03115517708527770. ISSN 0311-5518. Sansom IJ, Smith MP, Smith MM, Turner P (1997). "Astraspis: The anatomy and histology of an Ordovician fish" (PDF). Palaeontology...
charaeformis †Asterophyllites longifolius – tentative report †Astraspis – type locality for genus †Astraspis desiderata – type locality for species †Athyris †Athyris...
Notes Images Archeognathus primus A common giant archeognathid conodont Astraspis sp. An armored agnathan (jawless fish) Conodonta indet. Multiple unnamed...
Since pieces of the bony armor that once embedded in the skin of the fish Astraspis were preserved at St. Joseph's, the similarly aged nearby Middle Ordovician...
†Aglaocrinus †Amorphognathus †Amplexus †Archaeocidaris †Astraspis – type locality for genus †Astraspis desiderata – type locality for species †Athyris †Aviculopecten...
inches (2 meters). The shale also contains the fossils of giant conodonts, Astraspis, giant algae, phyllocarids, and possibly the oldest known Thylacocephalan...
is published by Dec (2019). A study on the anatomy of dermal plates of Astraspis is published by Lemierre & Germain (2019), who report possible evidence...
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