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Eocaecilia
''Eocaecilia'' is an extinct genus of caecilian (limbless amphibian) from the early Jurassic Kayenta Formation of Arizona, USA. One species is described, ''Eocaecilia micropodia''.
''Eocaecilia'' shared some characteristics with salamanders and the now extinct ''Microsauria''. It was of small size, about 15 cm in length. Unlike modern caecilians, which are legless, ''Eocaecilia'' possessed small legs, and while modern caecilians have poorly developed eyes and spend a lot of time under ground, ''Eocaecilias eyes were somewhat better well-developed. Although the precise ancestry of ''Eocaecilia'' is debated (and other caecilians by extension), it likely resided among the ancestral lepospondyl〔Jenkins, F.A. & Walsh, D.M. (1993) An Early Jurassic caecilian with limbs. Nature 365: 246-250.〕〔Huttenlocker, A. K.; Pardo, J. D.; Small, B. J.; Anderson, J. S. (2013). "Cranial morphology of recumbirostrans (Lepospondyli) from the Permian of Kansas and Nebraska, and early morphological evolution inferred by micro-computed tomography". Journal of Vertebrate Paleontology 33 (3): 540. doi:10.1080/02724634.2013.728998〕〔Anderson, J. S.; Reisz, R. R.; Scott, D.; Fröbisch, N. B.; Sumida, S. S. (2008). "A stem batrachian from the Early Permian of Texas and the origin of frogs and salamanders". Nature 453 (7194): 515–518. doi:10.1038/nature06865〕 or temnospondyl〔Jenkins, F.A. ''et al.'' (2007) (Anatomy of ''Eocaecilia micropodia'', A Limbed Caecilian of the Early Jurassic ). ''Bulletin of the Museum of Comparative Zoology'' 158(6):285-365.〕〔Maddin H.C., Jenkins F.A. Jr. & Anderson J.S. (2012) (The Braincase of ''Eocaecilia micropodia'' (Lissamphibia, Gymnophiona) and the Origin of Caecilians ). ''PLoS ONE'' 7(12):e50743.〕 amphibians of the Paleozoic and Mesozoic.
==References==
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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