-
Sharks are a
group of
elasmobranch fish
characterized by a
cartilaginous skeleton, five to
seven gill
slits on the
sides of the head, and
pectoral fins...
-
Diphyllidea (elasmobranchs inc. rays, sharks)
Trypanorhyncha (fishes/crustaceans/molluscs → bony fishes/
selachians)...
- V Cold, Wet,
including eggs (Among the egg-laying fishes):
placental selachians Shark,
skate with blood none S, V Cold, Wet, but
placenta like tetrapods...
-
Diphyllidea (elasmobranchs inc. rays, sharks)
Trypanorhyncha (fishes/crustaceans/molluscs → bony fishes/
selachians)...
- Williamson,
Thomas E.; Kirkland,
James I.; Lucas,
Spencer G. (1993). "
Selachians from the
Greenhorn Cyclothem ("Middle" Cretaceous: Cenomanian–Turonian)...
-
Myliobatoidei Recent molecular studies suggest the
Batoidea are not
derived selachians as
previously thought. Instead,
skates and rays are a
monophyletic superorder...
- History" John
Ainsworth Steve Lyons Seventh Doctor, Klein,
Rachel Cooper,
Selachians March 2010 (2010-03) 133 "City of Spires"
Nicholas Briggs Simon Bovey...
-
First Doctor (Steven Taylor, Sara Kingdom) January 2012 (2012-01) 8 "The
Selachian Gambit" Lisa
Bowerman Steve Lyons Second Doctor, Ben (Polly,
Jamie McCrimmon)...
-
litter (young) mute pack (wild)
canine Dogfish Also see
Shark — — —
troop selachian squaloid capeshark (US)
flake (UK, Australia) huss (UK)
kahada (Canada)...
- them, the
selachians Selakhē (sharks and rays), had
cartilages instead of
bones and were
viviparous (Aristotle did not know that some
selachians are oviparous)...
