Definition of lobe-finned fish in English:
A fish of a largely extinct group having fleshy lobed fins, including the probable ancestors of the amphibians. Compare with ray-finned fish.
- Subclass Crossopterygia (or Actinistia or Coelacanthimorpha): the only living representative is the coelacanth
- This latter species belonged to an endemic group of lobefins that we named the canowindrids, after the genus Canowindra, coincidentally named after its locality, the town of Canowindra in New South Wales.
- Among fish, the armoured placoderm and ostracoderm and marine lobe-finned fish (apart from the odd coelacanths) that so dominated the Devonian seas are all gone, to be replaced by an amazing diversity of sharks (Chondrichthyes).
- According to Hedges, by about 360 million years ago the transition of lobe-finned fish - prehistoric fish with fleshy fins - to four-limbed tetrapods was nearly complete.
Definition of lobe-finned fish in:
- US English dictionary
What do you find interesting about this word or phrase?
Comments that don't adhere to our Community Guidelines may be moderated or removed.
Most popular in the US
Most popular in the UK
Most popular in Australia
Most popular in Malaysia
Most popular in Pakistan