Benneviaspidida
Benneviaspidida is an order of osteostracan jawless fishes which lived in the Early Devonian. The fishes in order Benneviaspidida have a flat headshield and are dorsoventrally depressed. The first canal to lateral sensory field bifurcates near the orbit.
| Benneviaspidida | |
|---|---|
 | |
| Boreaspis, a fish in order Benneviaspidida | |
| Scientific classification | |
| Kingdom: | |
| Phylum: | |
| Class: | |
| Order: | Benneviaspidida |
| Families | |
Phylogeny
- Osteostraci
- Ateleaspis
- Aceraspis
- Tuvaspis
- Hirella
- Hemicyclaspis
- Tremataspidae
- Dartmuthiidae
- Sclerodontidae
- Tannuaspidida
- Cornuata
- Cephalaspidida
- Zenaspidida
- Benneviaspidida
- Hemicyclaspis
- Hirella
gollark: What is this mysterious frill anyway?
gollark: Given to nocturnes, obviously.
gollark: This is why we need a BSA to destroy the entire AP if we feel like it.
gollark: ***megashiny***
gollark: Who would throw out an upside down mint?
References
External links
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