The class Osteostraci ("Bony Shields") was a group of bony-armored jawless fish, termed "ostracoderms", that lived in what is now North America, Europe and Russia from the Middle Silurian to Late Devonian.
| Graph IRI | Count |
|---|---|
| http://dbkwik.webdatacommons.org | 19 |
![[RDF Data]](/fct/images/sw-rdf-blue.png)
