Australia: The Land Where Time Began

A biography of the Australian continent 

Lampreys and Hagfish

These are the only extant agnaths. Lampreys are parasites that feed by attaching to the side of a large fish with the rings of numerous small teeth then biting into the flesh and drinking the blood flowing from the wound.

Hagfish are deep sea scavengers that attach to the body of a carcass and pull out chunks by tying their long slimy body into a knot than moving the knot from the tail end to the head, gaining the necessary purchase by pushing the knot against the carcass. They are the largest extant agnathan, growing up to 1.4 m.

Both lampreys and hagfish have remained almost unchanged since their first known appearance in the Carboniferous, 340 million years ago.

Sources & Further reading

John A Long The Rise of Fishes - 500 Million years of Evolution, University of New South Wales Press, 1995

Email:  admin@austhrutime.com
Last Updated 03/01/2009

 

Sarcopterygians
Fish
Fish Teeth
Fish Bone
Fish to Amphibian
Agnathans
Agnathan-Basic Structure
Arandaspis
Lampreys & Hagfish
Chondrichthyans
Fossil Fish Beds
Cosmine
Devonian Microfossils
Devonian Faunal Similarities
Devonian Australia
Crossopterygians
Gnathostomes
Dipnoans-Lungfish
Dipnoans-Basic Structure
Acanthodians
Placoderms
Placoderms-Basic Structure
Australian Fish-Permian-Carboniferous
Home
Journey Back Through Time
Geology
Biology
     Fauna
     Flora
Climate
Hydrology
Environment
Experience Australia
Aboriginal Australia
National Parks
Photo Galleries
Site Map
                                                                                           Author: M.H.Monroe  Email: admin@austhrutime.com     Sources & Further reading