Sharks and Rays - Persistent notochord, constricted; mouth
sub terminal to ventral; teeth numerous, continually replaced, placoid; 5-7 pair gills, separate slit openings; usually an open spiracle; jaws amphistylic or hyostylic; pelvic girdle 1 fused unit; males single clasper each pelvic fin; 1 or 2 dorsal fins, rigid, spine or
not
Research Links
subclass
Elasmobranchii (ERMS taxonomic hierarchy)
European Register of Marine Species European Register of Marine Species
Taxonomic
hierarchy for the subclass Elasmobranchii. subclass Elasmobranchii ...
World Problems:
Alphabetic Index S... (page 381)
... Subclass Threatened species Elasmobranchii | (D) [*W*]; Subclass Threatened
species
Eumalacostraca | (D); Subclass Threatened species Flukes | (D); Subclass ...
Courtenay
Museum Earth Sciences: Paleo Page
... Subclass: Elasmobranchii (Sharks, Skates, and Rays): Sharks, Skates, and
Rays are
all aquatic or marine carnivores that track their prey using a system of ...
Intro
to Sharks
... and those with five or more gill slits, called sharks, rays, and all their
relatives
(subclass Elasmobranchii). This CD-ROM covers the subclass Elasmobranchii. ...
megalo
... SubPhylum Vertebrata (vertebrates) Class Chondrichthyes (cartilaginous fish)
Subclass
Elasmobranchii (sharks and rays) Order Lamniformes Family Selachii Genus ...
Untitled
Sub-Unit: Subclass Elasmobranchii. Subclass Elasmobranchii.
The sharks, rays and dogfish are a diverse ...
Classification
and Natural History of Fish
... The subclass Elasmobranchii includes the sharks as well as theflattened
bottom dwelling
skates (spelling) and rays. And youhave a picture of one here on the ...
Ch
1 - Diversity, Evolution, and Classification of ...
... Subclass Elasmobranchii sharks, rays, skates characteristics placoid scales
that
are modified to form teeth 5-7 pairs of gill slits with separate external ...
sharks
... the species chimaeras, such as ratfish and elephant fish. So the shark
belongs to
the subclass Elasmobranchii. There are many different types of sharks. There ...
Jawless Fishes
and Chondrichthyes
... fin with venomous spine d. Live in cool water marine habitats D. Subclass
Elasmobranchii
1. Characteristics of the class a. Typically 5, rarely 6-7 gill slits ...
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