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!Fishes 2
Bony Fishes: Osteichthyes: Class Sarcopterygii: Subclass Coelacanthimorpha
15
Biology
Undergraduate 4
11/11/2009
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Term
Coelacanthimorpha
 Definition
hollow spine
Term
evolutionary history
 Definition
first fossils mid-devonian; not known after cretaceous; living Latimeria chalumnae in 1938
Term
fin
 Definition
hollow spinous first dorsal fin
Term
tail
 Definition
3 lobed w/ fringed or fleshy middle lobe
Term
intracranial joint
 Definition
unusual; b/w frontals and parietal; anterior part can be pulled ventrally in biting; head flexible at atlas
Term
feeding
 Definition
large predators
Term
skeleton
 Definition
mixed bone and cartilage
Term
swim bladder
 Definition
filled w/ lipids for bouyancy
Term
nares
 Definition
external
Term
cloaca
 Definition
none
Term
branchiostegals
 Definition
none
Term
spines
 Definition
hollow
Term
lepidotrichia
 Definition
none
Term
one inner ear structure
 Definition
only living vert w/ it (homologous) precursor to mammalian cochlea
Term
reproduction
 Definition
ovoviviparous
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