Orden Resumen for Pristiophoriformes
|
Referencia principal |
: |
||||||
Orden |
: |
Pristiophoriformes saw sharks |
|||||
Clase |
: |
Elasmobranchii |
|||||
Orden hermana |
: |
Pristiformes 145 M years |
|||||
Referencia |
: |
||||||
Primer expediente de fósil |
: |
late Jurassic |
|||||
Ocurre en |
: |
Marino |
Dulce |
Salobre |
|||
Observación |
: |
Body sharklike; snout produced in a long flat blade with teeth on each side (teeth unequal in size, usually alternating large and small, and weakly embedded); one pair of long barbels; no dorsal fin spines (sometimes present as internal rudiments); anal fin absent; spiracles large. Maximum length 1.4 m. |
|||||
Clase Etimologia |
: |
Greek eulanein, elasmos = metal beaten out + Greek brangchia = gills. Ref. 45335. |
|||||
Orden Etimologia |
: |
Greek, pristis, -eos = a kind of shark + Latin ferre = to carry + Latin, forma = shape (Ref. 45335). |
|||||
Familias |
: |
( n = 1 ) - Pristiophoridae |
Converted to PHP by Kit 06.10.09 |