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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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