FACTOID # 91: In the Maldives, there are more than 2 jails for every 1000 people.
 
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Encyclopedia > Rajomorphii
Rays
Scientific classification
Kingdom: Animalia
Phylum: Chordata
Class: Chondrichthyes
Subclass: Elasmobranchii
Superorder: Rajomorphii
Orders

Batoidea - common rays and skates
Myliobatiformes - eagle rays, manta rays
Pristiformes - sawfishes
Torpediniformes - electric rays


Rays are a group (superorder Rajomorphii or Batoidea) of cartilaginous fishes. They are extremely flat but closely related to the sharks. According to recent DNA analyses the catshark is more closely related to the rays than to other sharks. Young rays look very much like young sharks.


Most rays live at the bottom of the sea. Only a few species live in the open sea or in freshwater. Rays feed on crustaceans or fish, depending on the species. No ray can kill humans, but the stingray can inflict a painful sting.


For the main types of rays see stingrays, eagle rays, cow nose rays, manta rays, electric rays, and sawfishes.


  Results from FactBites:
 
Animal Library: Fish: Rays (211 words)
Sharks and rays both fall into the "Subclass Elasmobranchii" which includes jawed fishes with cartilaginous skeletons, multiple gill slits, skin covered with tiny tooth-like scales, and rows of regenerating teeth.
Rays fall into one of its two Superorders "Rajomorphii" (Stingrays, Electric Rays, Skates, Sawfishes, & Guitarfishes).
From there, the rays of interest noted below fall into the "Order Myliobatiformes" and "Family Dasyatidae" (Whiptail Stingrays - Genus Dasyatis & Taeniura) and "Family Urolophidae" (Stingarees - Genus Urolophus).
  More results at FactBites »


 

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