Cepphus Pallas 1769 ...
CLADE CEPPHUS Node Calibrated (11): Cepphus (guillemots). Divergence of the Spectacled Guillemot Cepphus carbo from the Black Guillemot Cepphus grylle and the Pigeon Guillemot Cepphus columba (Figure 2) Fossil Taxon. Cepphus olsoni Howard, 1982 Specimen. LACM 107032 (Los Angeles County Museum of Nat...
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Zenodo
2015
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| Online Access: | https://dx.doi.org/10.5281/zenodo.13306018 https://zenodo.org/doi/10.5281/zenodo.13306018 |
| Summary: | CLADE CEPPHUS Node Calibrated (11): Cepphus (guillemots). Divergence of the Spectacled Guillemot Cepphus carbo from the Black Guillemot Cepphus grylle and the Pigeon Guillemot Cepphus columba (Figure 2) Fossil Taxon. Cepphus olsoni Howard, 1982 Specimen. LACM 107032 (Los Angeles County Museum of Natural History, Los Angeles, California, USA) holotype specimen of Cepphus olsoni, humerus. Phylogenetic Justification. The only phylogenetic assessment of the systematic position of Cepphus olsoni recovered it as the sister taxon of the extant species Cepphus carbo, with Cepphus grylle and Cepphus columba in unresolved positions at the base of Cepphus (combined analysis; Smith, 2011a). Minimum Age. Late Miocene (Messinian) 6.7 Ma Soft Maximum Age. Not specified Age Justification. The vertebrate assemblages of the San Mateo Formation were reviewed by Barnes et al. (1981), who designated the lower assemblage the San Luis Rey River Local Fauna (SLRRLF), and the upper assemblage the Lawrence Canyon Local Fauna (LCLF). ... : Published as part of Smith, A, 2015, Sixteen vetted fossil calibrations for divergence dating of Charadriiformes (Aves, Neognathae), pp. 1-18 in Palaeontologia Electronica 18 (1) on page 12, DOI: 10.26879/410, http://zenodo.org/record/13311248 ... |
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