comment on this calibration
Boinae
Lineage (NCBI):
root
» Eukaryota
» Opisthokonta
» Metazoa
» Eumetazoa
» Bilateria
» Coelomata
» Deuterostomia
» Chordata
» Craniata <chordata>
» Vertebrata <Metazoa>
» Gnathostomata <vertebrate>
» Euteleostomi
» Sarcopterygii
» Tetrapoda
» Amniota
» Sauropsida
» Sauria
» Lepidosauria
» Scleroglossa
» Serpentes
» Henophidia
» Boidae
| node name Boinae Look for this name in NCBI Wikipedia Animal Diversity Web | ||
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recommended citations http://palaeo-electronica.org/content/fc-6 Head, 2015 |
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node minimum age 58 Ma The minimum age is the youngest age estimate for palynological zone CU-02, which contains the horizon from which Titanoboa fossils were recovered in the Cerrejón Formation of Colombia (Jaramillo et al., 2007; Head et al., 2009). | ||
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node maximum age 64 Ma The soft maximum age is the maximum age estimate for the Tiupampan SALMA (Woodburne et al., 2014), the oldest SALMA that includes the oldest reported records of boid snakes (Albino and Brizuela, 2014). | ||
| primary fossil used to date this node | ||
UF/IGM 1 | ||
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phylogenetic justification
Titanoboa was united with Boinae on the basis of paracotylar fossae and foramina, straight, posteromedially angled interzygapophyseal ridges, and a vaulted posterior neural arch (Head et al., 2009). |
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phylogenetic reference(s)
Head, J. J., J. I. Bloch, A. K. Hastings, J. R. Bourque, E. A. Cadena, F. A. Herrera, P. D. Polly, and C. A. Jaramillo. 2009. Giant boid snake from the Paleocene neotropics reveals hotter past equatorial temperatures. Nature, 457:715-717.
[View electronic resource] |
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| tree image (click image for full size) | ||
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Figure 1 from Head (2015).
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