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Variation of hyoid morphology in geoemydid terrapins
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Abstract
The hyoid apparati of 25 geoemydid species in 16 genera (including aquatic,
semiterrestrial and terrestrial taxa) are compared, and for Cuora
galbinifrons bourreti ontogenetic development of the hypoid apparatus is
described. Generally, ossification of the hyoid apparatus increases with
age. The majority of terrestrial species maintain cartilaginous or partially
cartilaginous hyoid bodies and second branchial horns throughout life
however. Also in tortoises (Testudinidae) hyoid body and second branchial
horns remain cartilaginous, suggesting a positive correlation between mode
of life and hyoid morphology (terrestrial species with partly cartilaginous
hyoid apparatus vs. aquatic species with fully ossified hyoid
apparatus).
Title: Variation of hyoid morphology in geoemydid terrapins
Description:
Abstract
The hyoid apparati of 25 geoemydid species in 16 genera (including aquatic,
semiterrestrial and terrestrial taxa) are compared, and for Cuora
galbinifrons bourreti ontogenetic development of the hypoid apparatus is
described.
Generally, ossification of the hyoid apparatus increases with
age.
The majority of terrestrial species maintain cartilaginous or partially
cartilaginous hyoid bodies and second branchial horns throughout life
however.
Also in tortoises (Testudinidae) hyoid body and second branchial
horns remain cartilaginous, suggesting a positive correlation between mode
of life and hyoid morphology (terrestrial species with partly cartilaginous
hyoid apparatus vs.
aquatic species with fully ossified hyoid
apparatus).
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