Caudata
Lineage (NCBI):
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» Batrachia
» Caudata
node name Caudata Look for this name in NCBI Wikipedia Animal Diversity Web | ||
recommended citations http://palaeo-electronica.org/content/fc-1 Benton et al. 2015 |
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node minimum age 146.8 Ma The Brushy Basin Member of the Morrison Formation is dated as Kimmeridgian or early Tithonian. The upper boundary of the Early Tithonian is 147.7 Ma ± 0.9 Myr (Gradstein et al., 2012, pp. 764, 777), so 146.8 Ma. | ||
node maximum age 175.1 Ma The soft maximum constraint is based on the possibility that the Kirtlington ‘Salamander B’ might be a crown caudate, lowering the age estimate to Late Bathonian, and indeed, the range is extended to the base of the Middle Jurassic, dated as 174.1 Ma ± 1.0 Myr, so 175.1 Ma. | ||
primary fossil used to date this node | ||
DINO 16453a | ||
phylogenetic justification
Iridotriton is identified as a member of Salamandroidea, and hence crown Caudata, by the possession of several apomorphies, including the presence of spinal nerve foramina in the tail. |
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phylogenetic reference(s)
Evans, S.E., Lally, C., Chure, D.C., Elder, A., and Maisano, J.A. 2005. A late Jurassic salamander (Amphibia: Caudata) from the Morrison formation of North America. Zoological Journal of the Linnean Society, 143:599–616.
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tree image (click image for full size) | ||