Astraspis


This illustration is available as a printable colouring sheet. Just click here and right click on the image that opens in a new window and save to your computer.

Name: Astraspis ‭(‬Star shield‭)‬.
Phonetic: As-tra-as-piss.
Named By: Walcott‭ ‬-‭ ‬1892.
Classification: Chordata,‭ ‬Pteraspida,‭ ‬Astraspida.
Species: A.‭ ‬desiderata‭ (‬type‭)‬,‭ ‬A.‭ ‬splendens.
Diet: Filter feeder‭?
Size: Estimated to about‭ ‬20‭ ‬centimetres long.
Known locations: North America,‭ ‬possibly Bolivia as well.
Time period: Darriwilian to Katian of the Ordovician.
Fossil representation: Several individuals.

       Named for the star shaped denticles that covered the body,‭ ‬Astraspis was an Ordovician era jawless fish similar to Arandaspis and Sacabambaspis.‭ ‬Astraspis also seems to have had a lateral line,‭ ‬a series of sensory organs that run down length of the sides of the body,‭ ‬as in modern fish.


Further reading
-‭ ‬Astraspis:‭ ‬The anatomy and histology of an Ordovician fish,‭ ‬I.‭ ‬J.‭ ‬Sansom,‭ ‬M.‭ ‬P.‭ ‬Smith‭ & ‬P.‭ ‬Turner‭ ‬-‭ ‬1997.





----------------------------------------------------------------------------

Random favourites