Comparative anatomy of caecilian anterior vertebrae
Сравнительная анатомия передних позвонков безногих
1977-06-24
SCID: 54.1/h4c26ptr
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anterior vertebraeburrowing adaptationscaecilian amphibianscomparative anatomyvertebral taxonomy
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Abstract (AI)
The limbless caecelian amphibians have vertebral adaptations for their burrowing habit and mode of life that suggest an evolutionary change of certain thoracic vertebrae to assist motile, cervical functions, despite retention of rudimentary ribs on them. The changes appear related to distinct stresses placed on the vertebrae by movements necessary to burrowing. Also, the changes are distinct enough to be taxonomically useful for potential distinction of genera and/ or species in the several families of caecelians.
Key Findings
1
Caecilian vertebrae exhibit adaptations associated with limbless burrowing and the animals’ specialized mode of life.
2
Certain thoracic vertebrae appear evolutionarily modified to perform motile, cervical-like functions while retaining rudimentary ribs.
3
These vertebral modifications likely reflect distinct mechanical stresses generated by burrowing movements.
4
Variation in anterior vertebral anatomy is sufficiently pronounced to support taxonomic discrimination among caecilian genera and potentially species.
Research Object
caecilian anterior vertebrae
Research Subject
comparative anatomical adaptations and evolutionary changes associated with burrowing stresses, cervical mobility, and taxonomic differentiation
Publication Details
Publication Date
1977-06-24
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