Pteraspidoidei

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Pteraspidoidei
Temporal range: Devonian
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Errivaspis waynesis.jpg
Errivaspis
Scientific classification Red Pencil Icon.png
Kingdom: Animalia
Phylum: Chordata
Superclass: Agnatha
Class: Pteraspidomorphi
Subclass: Heterostraci
Order: Pteraspidiformes
Suborder: Pteraspidoidei
sensu Pernègre, 2006
Families
Synonyms

†Pteraspidina sensu Janvier, 1996

Pteraspidoidei is an extinct suborder of heterostracan vertebrates. It contains the more derived taxa within Pteraspidiformes, such as Pteraspis and Errivaspis , though, some protopteraspidids, such as Doryaspis and Panamintaspis , share various features with these derived pteraspidids.

Heterostraci subclass of fishes (fossil)

Heterostraci is an extinct subclass of pteraspidomorph jawless vertebrate that lived primarily in marine and estuary environments. The first identifiable heterostracans appear in the fossil record during the early Silurian, and all, save for the Psammosteids, became extinct by the start of the late Devonian. This last group of heterostracans died out in the extinction event at the end of the Devonian.

Vertebrate subphylum of chordates

Vertebrates comprise all species of animals within the subphylum Vertebrata. Vertebrates represent the overwhelming majority of the phylum Chordata, with currently about 69,276 species described. Vertebrates include the jawless fishes and jawed vertebrates, which include the cartilaginous fishes and the bony fishes. The bony fishes in turn, cladistically speaking, also include the tetrapods, which include amphibians, reptiles, birds and mammals.

Pteraspidiformes order of fishes (fossil)

Pteraspidiformes is an extinct order of heterostracan agnathan vertebrates known from extensive fossil remains primarily from Early Devonian strata of Europe and North America, and from Upper Silurian Canada.

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References