comment on this calibration
Strepsirhini
Lineage (NCBI):
root
» Eukaryota
» Opisthokonta
» Metazoa
» Eumetazoa
» Bilateria
» Coelomata
» Deuterostomia
» Chordata
» Craniata <chordata>
» Vertebrata <Metazoa>
» Gnathostomata <vertebrate>
» Euteleostomi
» Sarcopterygii
» Tetrapoda
» Amniota
» Mammalia
» Theria <Mammalia>
» Eutheria
» Euarchontoglires
» Primates
» Strepsirrhini
| node name Strepsirhini Look for this name in NCBI Wikipedia Animal Diversity Web | ||
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recommended citations http://palaeo-electronica.org/content/fc-1 Benton et al. 2015 |
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node minimum age 33.9 Ma Following Seiffert (2006), the Birket Quarun Formation of the Fayûm corresponds to the Priabonian with an upper bound of 33.9 Ma. | ||
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node maximum age 56 Ma Fossil primates are relatively common mammalian fossils at many localities in North America and Eurasia throughout the Eocene; yet crown strepsirhines remain conspicuously absent prior to the late Eocene. Hence, we suggest the first appearance of euprimates, represented by Altiatlasius from the late Paleocene of Morocco (Sigé et al., 1990) as the soft maximum for Strepsirhini, namely 56 Ma ± 0.0 Myr = 56 Ma. | ||
| primary fossil used to date this node | ||
CGM 40265 | ||
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phylogenetic justification
Phylogenetic analysis (Seffert et al., 2003) shows Karanisia is a member of crown Stresirrhini. It is loris-like, and has a dentition similar to the extant lorisid Arctocebus. Subsequent cladistic study (Seiffert, 2007) still could not place Karanisia unequivocally, and it was identified as either a stem lorisiform or a crown strepsirrhine of uncertain affinities; in either case it is nested within crown Strepsirrhini. |
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phylogenetic reference(s)
Seiffert, E.R., Simons, E.L., and Attia, Y. 2003. Fossil evidence for an ancient divergence of lorises and galagos. Nature, 422:421-424.
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| tree image (click image for full size) | ||
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Figure 11 of Benton et al. (2014)
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