![cover image](https://wikiwandv2-19431.kxcdn.com/_next/image?url=https://upload.wikimedia.org/wikipedia/commons/thumb/c/c9/Cowielepis_ritchiei.jpg/640px-Cowielepis_ritchiei.jpg&w=640&q=50)
Anaspida
Group of extinct jawless vertebrates / From Wikipedia, the free encyclopedia
Dear Wikiwand AI, let's keep it short by simply answering these key questions:
Can you list the top facts and stats about Birkeniiformes?
Summarize this article for a 10 year old
SHOW ALL QUESTIONS
For the reptile group, see Anapsida. For the gastropod clade, see Anaspidea. For the freshwater crustacean family, see Anaspididae.
Anaspida ("shieldless ones") is an extinct group of jawless fish that existed from the early Silurian period to the late Devonian period.[2] They were classically regarded as the ancestors of lampreys,[3] but it is denied in recent phylogenetic analysis,[4] although some analysis show these group would be at least related.[5] Anaspids were small marine fish that lacked a heavy bony shield and paired fins, but were distinctively hypocercal.
Quick Facts Scientific classification, Type species ...
Anaspida | |
---|---|
![]() | |
Cowielepis | |
Scientific classification ![]() | |
Domain: | Eukaryota |
Kingdom: | Animalia |
Phylum: | Chordata |
Superclass: | †Anaspidomorphi |
Class: | †Anaspida Traquair, 1899 |
Type species | |
†Birkenia elegans Traquair 1898 | |
Orders | |
Synonyms | |
|
Close
![Thumb image](http://upload.wikimedia.org/wikipedia/commons/thumb/a/a6/Anaspida.png/320px-Anaspida.png)