Viewing topic: Heterostracans

See sub-topics for Heterostracans ... >> Natural Science >> Zoology >> Heterostracans

Highest Rated Sign

No video has been submitted for this term

Nobody has posted a sign yet.

Heterostracans

  • Definition: A group of extinct fishes with dermal armor and no jaws or paired fins; known from the Ordovician to Devonian periods.

    Source: Hickman, C.P., et al. 2011. Integrated Principles of Zoology. Fifteenth Edition. McGraw-Hill Higher Education.

  • There are no comments for this topic.