American round stingrays (Urotrygonidae)
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General data

Main name: American round stingrays

Classification

Order: Myliobatiformes - Stingrays
Class: Elasmobranchii - Sharks and Rays
Superclass: Chondrichthyes - Cartilaginous fishes

Description

Urotrygonidae is a family of rays in the order Myliobatiformes, commonly referred to as the American round stingrays or round rays. They are native to the tropical and warm temperate marine waters of the Americas. The two genera in this family were formerly placed within the family Urolophidae, whose species are now restricted to the Indo-Pacific. They have a round pectoral fin disk, a slender tail with a caudal fin, no dorsal fins, and a venomous tail spine.

Genera

Urobatis

Urotrygon

Taxonomy of Fishes

Osteichthyes - Bony fishes->
Chondrichthyes - Cartilaginous fishes->
- Elasmobranchii - Sharks and Rays->
  - Lamniformes - Mackerel sharks->
  - Carcharhiniformes - Ground sharks->
  - Rhinopristiformes - Shovelnose rays->
  - Torpediniformes - Electric rays->
  - Rajiformes - Skates and rays->
  - Orectolobiformes - Carpet shark->
  - Squatiniformes - Angelsharks->
  - Heterodontiformes - Bullhead and horn sharks->
  - Hexanchiformes - Six-gill sharks->
  - Myliobatiformes - Stingrays->
    
    Dasyatidae - Stingrays->
    
    Mobulidae - Manta rays->
    
    Potamotrygonidae - Southamerican freshwater stingrays->
    
    Gymnuridae - Butterfly rays->
    
    Myliobatidae - Eagle ray->
    
    Urotrygonidae - American round stingrays->
    
    Aetobatidae - Pacific eagle rays->
    
    Hexatrygonidae - Sixgill stingrays->
    
    Plesiobatidae - Deepwater stingrays->
    
    Rhinopteridae - Cownose rays->
    
    Urolophidae - Round rays->
    
    Zanobatidae - Panrays->
  - Squaliformes - Sleeper and dogfish sharks->
  - Echinorhiniformes - Bramble sharks->
  - Pristiophoriformes - Saw sharks->
- Holocephali - Chimaeras->
Agnatha - Jawless fishes->