Cleithrolepis
Encyclopedia
Cleithrolepis is an extinct genus of ray-finned fish
from the Triassic
.
The genus grew to about 30 centimetres (11.8 in) long. It had a weak lower jaw with teeth only at the tip.
Cleithrolepis lived in rivers, billabongs and lakes in the large braided river system that deposited the Hawkesbury Sandstone in what is now New South Wales, with fossils found in shale lenses within the sandstone.
Fish
Fish are a paraphyletic group of organisms that consist of all gill-bearing aquatic vertebrate animals that lack limbs with digits. Included in this definition are the living hagfish, lampreys, and cartilaginous and bony fish, as well as various extinct related groups...
from the Triassic
Triassic
The Triassic is a geologic period and system that extends from about 250 to 200 Mya . As the first period of the Mesozoic Era, the Triassic follows the Permian and is followed by the Jurassic. Both the start and end of the Triassic are marked by major extinction events...
.
The genus grew to about 30 centimetres (11.8 in) long. It had a weak lower jaw with teeth only at the tip.
Cleithrolepis lived in rivers, billabongs and lakes in the large braided river system that deposited the Hawkesbury Sandstone in what is now New South Wales, with fossils found in shale lenses within the sandstone.
Sources
- Fossils (Smithsonian Handbooks) by David Ward (Page 213)
External links
- Fossil of freshwater fish, Cleithrolepis granulata - Somersby, New South Wales, Middle Triassic, 240 million years ago.