Acanthodian - Hutchinson encyclopedia article about Acanthodian Printer Friendly
Dictionary, Encyclopedia and Thesaurus - The Free Dictionary
3,581,239,306 visitors served.
forum Join the Word of the Day Mailing List For webmasters
?
Dictionary/
thesaurus
Medical
dictionary
Legal
dictionary
Financial
dictionary
Acronyms
 
Idioms
Encyclopedia
Wikipedia
encyclopedia
?

Acanthodii
(redirected from Acanthodian)

    Also found in: Encyclopedia, Wikipedia 0.01 sec.

Acanthodii

The spiny sharks, one of the five classes of fishes, now extinct. They were about 10–30 cm/4–12 in long, and possessed features of both the sharks, which have a cartilaginous skeleton, and the bony fish, which have a bony skeleton. They are the earliest known jawed vertebrate animals.
How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content.
?Page tools
Printer friendly
Cite / link 		Feedback
?Sign in SSL protected
Email:
Password:
Register

Mentioned in?  References in periodicals archive?   Hutchinson browser?   Full browser?
No references found
 
In the rocks of these outcrops only rare acanthodian scales are present.
Late Silurian--early Devonian tessellated heterostracan Oniscolepis ... by Marss, Tiiu; Karatajute-Talimaa, Valentina / Estonian Journal of Earth Sciences
The other braincase, from a species called Acanthodes, dates to a hundred million years after the Acanthodian group came into existence, casting most of this period of the group's evolution into shadow.
Oldest shark braincase shakes up assumptions about vertebrate ... by Asian News International
In addition, acanthodian fish scales and a portion of a fin spine, and numerous actinopterygian and sarcopterygian fish scales and tips of actinopterygian teeth from the MNSC were identified by Kenaga and Sellepack (1995).
Coprolites, cololites, and fish fossils in the Mississippian Michigan ... by Regenmorter, John Van; Videtich, Patricia E.; Neal, William J. / Michigan Academician
 
 
 
Hutchinson Encyclopedia
?

Terms of Use | Privacy policy | Feedback | Copyright © 2012 Farlex, Inc.
Disclaimer
All content on this website, including dictionary, thesaurus, literature, geography, and other reference data is for informational purposes only. This information should not be considered complete, up to date, and is not intended to be used in place of a visit, consultation, or advice of a legal, medical, or any other professional.