clasper spine


clasper spine
one or more needle-like spines which project from the distal end of claspers and are proportionally much larger than clasper hooks. Derived from denticles, e.g. in Squalus and the Jurassic Paleospinax

Dictionary of ichthyology. 2009.

Look at other dictionaries:

  • fish — fishless, adj. /fish/, n., pl. (esp. collectively) fish, (esp. referring to two or more kinds or species) fishes, v. n. 1. any of various cold blooded, aquatic vertebrates, having gills, commonly fins, and typically an elongated body covered with …   Universalium

  • Fish — /fish/, n. Hamilton, 1808 93, U.S. statesman: secretary of state 1869 77. * * * I Any of more than 24,000 species of cold blooded vertebrates found worldwide in fresh and salt water. Living species range from the primitive lampreys and hagfishes… …   Universalium

  • chondrichthian — /kon drik thee euhn/, n. any member of the class Chondrichthyes, comprising the cartilaginous fishes. [ < NL, equiv. to chondr CHONDR + Gk ichthýes (pl.) fish] * * * ▪ fish class Introduction class name  Chondrichthyes,  or  Selachii    any… …   Universalium

  • Outline of sharks — A great white shark at Isla Guadalupe, Mexico Sharks (superorder Selachimorpha) are a type of fish with a full cartilaginous skeleton and a highly streamlined body. The earliest known sharks date from more than 420 million years ago, before the… …   Wikipedia

  • Diversity of fish — Fish come in many shapes and sizes. This is a sea dragon, a close relative of the seahorse. They are camouflaged to look like floating seaweed.[1][2][3] …   Wikipedia

  • Bat ray — off the Channel Islands, California Conservation status …   Wikipedia

  • Coral reef fish — The fish that inhabit coral reefs are numerous and diverse. Coral reef fish are fish which live amongst or in close relation to coral reefs. Coral reefs form complex ecosystems with tremendous biodiversity. Among the myriad inhabitants, the fish… …   Wikipedia

  • Cuban dogfish — Conservation status Data Deficient ( …   Wikipedia

  • Oxynotus — Temporal range: 23–0 Ma[1] …   Wikipedia

  • Nacophorini — Mnesampela privata Scientific classification Kingdom …   Wikipedia


Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”

We are using cookies for the best presentation of our site. Continuing to use this site, you agree with this.