Labial Cartilages in the Smalltooth Sandtiger Shark, Odontaspis ferox (Lamniformes: Odontaspididae) and Their Significance to the Phylogeny of Lamniform Sharks
2009; Wiley; Volume: 292; Issue: 6 Linguagem: Inglês
10.1002/ar.20903
ISSN1932-8494
AutoresKenshu Shimada, Cynthia K. Rigsby, Sun H. Kim,
Tópico(s)Fish Biology and Ecology Studies
ResumoAbstract Using computed tomography, we discovered labial cartilages (splanchnocranial components) in an enigmatic lamniform shark, Odontaspis ferox (smalltooth sandtiger). We demonstrate that the presence of labial cartilages is plesiomorphic in Lamniformes, affirming that their “reduction” cannot be used as a synapomorphy for the order. Rather, their loss occurred through lamniform phylogeny. Anat Rec, 292:813–817, 2009. © 2009 Wiley‐Liss, Inc.
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