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Pteraspidomorpha

Pteraspidomorpha (also frequently spelled Pteraspidomorphi) is an extinct class of early jawless fish. They have long been regarded as closely related or even ancestral to jawed vertebrates, but the few characteristics they share with the latter are now considered as basal traits for all vertebrates.

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Classification

Bony fishesSharksHagfishesGnathostomesOstracoderms
7 related topics

Characteristics

PlatesHypocercal tails
2 related topics

Overview

ClassJawless fishBasalVertebrates
4 related topics

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Pteraspidomorpha

Nodes17
Edges16
Triples0
Avg. degree1.88
Density0.117647
Components1

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Important terminology

characteristics gnathostomes also pteraspidomorphs now ostracoderms class pteraspidomorphi vertebrates classification jawless regarded related ancestral basal dermal head large ventral water

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