Pteraspis

Pteraspis

      genus of extinct jawless fishlike vertebrates found as fossils in Early Devonian rocks (those 398 million to 416 million years old) in North America and Europe. Pteraspis was approximately 16 cm (6.5 inches) in length and had a heavy, rounded, bony shield that covered the anterior parts of the body. The remainder of the body was encased in small scales; it is probable that Pteraspis was an active, though inefficient, swimmer.

* * *


Universalium. 2010.

Игры ⚽ Поможем написать реферат

Look at other dictionaries:

  • Pteraspis — Saltar a navegación, búsqueda ? Pteraspis Rango fósil: Devónico Estado de conservación …   Wikipedia Español

  • Pteraspis — Taxobox name = Pteraspis fossil range = Early Devonian regnum = Animalia phylum = Chordata classis = Heterostraci familia = Pteraspidae genus = Pteraspis species = P. stensioei binomial = Pteraspis stensioei binomial authority = Pteraspis is an… …   Wikipedia

  • pteraspis — pte·ras·pis …   English syllables

  • pteraspis — pə̇s noun Usage: capitalized Etymology: New Latin, from pter + aspis : the type genus of Pteraspidae comprising small ostracoderms in which the dorsal armor is made up of 7 large plates …   Useful english dictionary

  • Arandaspida — Pteraspidomorphi Pteraspis (Heterostraci), Zeichnung von Joseph Smit, aus Nebula to Man, 1905 England Zeitraum Unteres Ordovizium bis Oberdevon 470 bis 370 …   Deutsch Wikipedia

  • Arandaspidida — Pteraspidomorphi Pteraspis (Heterostraci), Zeichnung von Joseph Smit, aus Nebula to Man, 1905 England Zeitraum Unteres Ordovizium bis Oberdevon 470 bis 370 …   Deutsch Wikipedia

  • Astraspida — Pteraspidomorphi Pteraspis (Heterostraci), Zeichnung von Joseph Smit, aus Nebula to Man, 1905 England Zeitraum Unteres Ordovizium bis Oberdevon 470 bis 370 …   Deutsch Wikipedia

  • Astraspidida — Pteraspidomorphi Pteraspis (Heterostraci), Zeichnung von Joseph Smit, aus Nebula to Man, 1905 England Zeitraum Unteres Ordovizium bis Oberdevon 470 bis 370 …   Deutsch Wikipedia

  • Astraspis — Pteraspidomorphi Pteraspis (Heterostraci), Zeichnung von Joseph Smit, aus Nebula to Man, 1905 England Zeitraum Unteres Ordovizium bis Oberdevon 470 bis 370 …   Deutsch Wikipedia

  • Eriptychiida — Pteraspidomorphi Pteraspis (Heterostraci), Zeichnung von Joseph Smit, aus Nebula to Man, 1905 England Zeitraum Unteres Ordovizium bis Oberdevon 470 bis 370 …   Deutsch Wikipedia

Share the article and excerpts

Direct link
… Do a right-click on the link above
and select “Copy Link”