Heterostraci
Extinct subclass of jawless fishes / From Wikipedia, the free encyclopedia
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Heterostraci (Ancient Greek, ἕτερος+ὄστρακον "those [with] a different shell" [-i is pl. of -us]) is an extinct subclass of pteraspidomorph, Ostracoderm, jawless vertebrate that lived primarily in marine and estuary environments. Heterostraci existed from the mid-Ordovician to the conclusion of the Devonian.
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Quick Facts Scientific classification, Orders ...
Heterostraci | |
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Panamintaspis | |
Scientific classification | |
Domain: | Eukaryota |
Kingdom: | Animalia |
Phylum: | Chordata |
Infraphylum: | Agnatha |
Class: | †Pteraspidomorphi |
Subclass: | †Heterostraci Lankester 1868 |
Orders | |
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