Sixgill sawshark

Sixgill sawshark
Temporal range: Miocene to Present[1]
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Class: Chondrichthyes
Subclass: Elasmobranchii
Subdivision: Selachimorpha
Order: Pristiophoriformes
Family: Pristiophoridae
Genus: Pliotrema
Regan, 1906
P. warreni
Binomial name
Pliotrema warreni
Regan, 1906
Range of sixgill sawshark shark (in blue)

The sixgill sawshark, Pliotrema warreni is a sawshark of the family Pristiophoridae. Presence of 6 pairs of gill slits highlights this genus among sharks; outside Hexanchiformes order, Pliotrema is the only shark with more than 5 gill slits. Unlike other sawsharks, the barbs on this shark's rostrum continue onto the sides of the head. Its barbels are also closer to its mouth than in other species. At maximum, females can reach over 136 cm long, and males can reach over 112 cm long.

  1. ^ Sepkoski, Jack (2002). "A compendium of fossil marine animal genera (Chondrichthyes entry)". Bulletins of American Paleontology. 364: 560. Archived from the original on 2011-09-30. Retrieved 2008-01-09.
  2. ^ Pollom, R.; Rigby, C.L.; Bennett, R.; Fennessy, S.; Gledhill, K.; Leslie, R.; Sink, K.; Winker, H.; Pacoureau, N.; Herman, K.; Cheok, J. (2020). "Pliotrema warreni". IUCN Red List of Threatened Species. 2020: e.T171728748A124432293. doi:10.2305/IUCN.UK.2020-3.RLTS.T171728748A124432293.en. Retrieved 18 November 2021.

Powered by 654 easy search