1,721,012 research outputs found
Fig. 4 in New Morphological Evidence for the Phylogeny of Artiodactyla, Cetacea, and Mesonychidae
Fig. 4. Dorsal views of the right astragali ofPublished as part of GEISLER, JONATHAN H., 2001, New Morphological Evidence for the Phylogeny of Artiodactyla, Cetacea, and Mesonychidae, pp. 1-56 in American Museum Novitates 3344 on page 13, DOI: 10.1206/0003-0082(2001)3442.0.CO;2, http://zenodo.org/record/537137
New Morphological Evidence for the Phylogeny of Artiodactyla, Cetacea, and Mesonychidae
GEISLER, JONATHAN H. (2001): New Morphological Evidence for the Phylogeny of Artiodactyla, Cetacea, and Mesonychidae. American Museum Novitates 3344: 1-56, DOI: 10.1206/0003-0082(2001)3442.0.CO;2, URL: http://www.bioone.org/doi/abs/10.1206/0003-0082%282001%29344%3C0001%3ANMEFTP%3E2.0.CO%3B
A New Protocetid Whale (Cetacea: Archaeoceti) from the Late Middle Eocene of South Carolina
GEISLER, JONATHAN H., SANDERS, ALBERT E., LUO, ZHE-XI (2005): A New Protocetid Whale (Cetacea: Archaeoceti) from the Late Middle Eocene of South Carolina. American Museum Novitates 3480 (1): 1-66, DOI: 10.1206/0003-0082(2005)480[0001:ANPWCA]2.0.CO;2, URL: http://www.bioone.org/perlserv/?request=get-abstract&doi=10.1206%2F0003-0082(2005)480%5B0001%3AANPWCA%5D2.0.CO%3B
New evidence and analyses indicate that Tursiops osennae is a Globicephaline (Odontoceti, Delphinidae) from the Pliocene of Siena Basin (Tuscany, Italy)
Tursiops osennae is a species of Delphinidae first described by Simonelli in 1911. It was found in Pliocene sediments (5.33.35 Ma) from the sedimentary basin of Siena- Radicofani in Tuscany, Italy. The holotype consists of an incomplete skull including the ear bones (right periotic and right and left tympanic bulla), a small portion of the left mandible, the atlas articulated with the axis, and the third and fourth cervical vertebrae. The objective of this study was to redescribe this fossil specimen and evaluate its phylogenetic position using both molecular and morphological data. The morphology of Tursiops oseannae significantly differs from extant Tursiops spp. and from all other extant and fossil delphinids, indicating that it belongs to a new genus. Key diagnostic characters that identify this new taxon are: (1) broad rostrum; (2) very wide anterior angle between nasals; (3) very short orbit compared to skull length; (4) deep and narrow antorbital notches; (5) tilted posterior process of periodic; (6) tall atlas, with a long neural spine; and (7) little sloping neural spine of atlas. The phylogenetic position of Tursiops oseannae was evaluated using a supermatrix of 19630 characters coded for 45 taxa. The molecular partition is previously published, whereas the morphological partition was developed for the present study. It includes 63 morphological characters, of which 13 are new. The entire supermatrix was analyzed with implied weighting, with the constant k = 3. The single tree from the combined dataset shows T. osennae as nested in the Globicephalinae rather than in Delphininae, where Tursiops is situated. Tursiops osennae is the sister-taxon of Peponocephala electra and its closest fossil relative is Hemisyntrachelus cortesii, which is the sister-group of the clade of Globicephalinae + Steno bredanensis. Thus T. ossenae represents the oldest fossil genus of Globicephalinae, confirming the great diversification of Delphinidae in the Pliocene
Fig. 11 in New Morphological Evidence for the Phylogeny of Artiodactyla, Cetacea, and Mesonychidae
Fig. 11. The moleculebased tree from Gatesy et al. (1999a) with the degree (number of steps) that the data in appendix 3 contradict phylogenetic hypotheses depicted in this tree. Clade names are placed immediately below and to the left of their respective nodes, while branch support values are placed above and to the left. Negative values indicate that these groupings do not occur in the most parsimonious trees. Taxa abbreviations: AF, Artiofabula; CR, Cetruminantia; W, Whippomorpha.Published as part of GEISLER, JONATHAN H., 2001, New Morphological Evidence for the Phylogeny of Artiodactyla, Cetacea, and Mesonychidae, pp. 1-56 in American Museum Novitates 3344 on page 28, DOI: 10.1206/0003-0082(2001)3442.0.CO;2, http://zenodo.org/record/537137
Fig. 16 in A New Protocetid Whale (Cetacea: Archaeoceti) from the Late Middle Eocene of South Carolina
Fig. 16. Lateral views of the thoracic vertebrae (i.e.. T4–T7) of Carolinacetus gingerichi (ChM PV5401). Scale bar is 10 cm in length. See appendix 3 for anatomical abbreviations.Published as part of GEISLER, JONATHAN H., SANDERS, ALBERT E. & LUO, ZHE-XI, 2005, A New Protocetid Whale (Cetacea: Archaeoceti) from the Late Middle Eocene of South Carolina, pp. 1-66 in American Museum Novitates 3480 (1) on page 29, DOI: 10.1206/0003-0082(2005)480[0001:ANPWCA]2.0.CO;2, http://zenodo.org/record/538308
Fig. 22 in A New Protocetid Whale (Cetacea: Archaeoceti) from the Late Middle Eocene of South Carolina
Fig. 22. Anterior view of the fourth thoracic vertebra of Carolinacetus gingerichi (ChM PV5401). Scale bar is 5 cm in length. See appendix 3 for anatomical abbreviations.Published as part of GEISLER, JONATHAN H., SANDERS, ALBERT E. & LUO, ZHE-XI, 2005, A New Protocetid Whale (Cetacea: Archaeoceti) from the Late Middle Eocene of South Carolina, pp. 1-66 in American Museum Novitates 3480 (1) on page 38, DOI: 10.1206/0003-0082(2005)480[0001:ANPWCA]2.0.CO;2, http://zenodo.org/record/538308
Carolinacetus GEISLER & SANDERS & LUO 2005, new genus
Carolinacetus, new genus DIAGNOSIS: Same as for the species. ETYMOLOGY: The generic name recognizes South Carolina, USA, as the origin of the holotype. TYPE SPECIES: Carolinacetus gingerichi, new species.Published as part of GEISLER, JONATHAN H., SANDERS, ALBERT E. & LUO, ZHE-XI, 2005, A New Protocetid Whale (Cetacea: Archaeoceti) from the Late Middle Eocene of South Carolina, pp. 1-66 in American Museum Novitates 3480 (1) on page 6, DOI: 10.1206/0003-0082(2005)480[0001:ANPWCA]2.0.CO;2, http://zenodo.org/record/538308
Fig. 24 in A New Protocetid Whale (Cetacea: Archaeoceti) from the Late Middle Eocene of South Carolina
Fig. 24. Posterior views of the ribs of Carolinacetus gingerichi (ChM PV5401). The left 4th, 6th, 7th, and 13th and the right 2nd and 9th–12th ribs were not preserved. Anterior is to the top of the page, and the scale bar is 10 cm in length. See appendix 3 for anatomical abbreviations.Published as part of GEISLER, JONATHAN H., SANDERS, ALBERT E. & LUO, ZHE-XI, 2005, A New Protocetid Whale (Cetacea: Archaeoceti) from the Late Middle Eocene of South Carolina, pp. 1-66 in American Museum Novitates 3480 (1) on page 40, DOI: 10.1206/0003-0082(2005)480[0001:ANPWCA]2.0.CO;2, http://zenodo.org/record/538308
Fig. 10 in A New Protocetid Whale (Cetacea: Archaeoceti) from the Late Middle Eocene of South Carolina
Fig. 10. Right tympanic bulla of Carolinacetus gingerichi (ChM PV5401) in dorsal (A) and ventral (B) view. Most of the outer lip of the bulla was not preserved. Scale bar is 5 cm in length. See appendix 3 for anatomical abbreviations.Published as part of GEISLER, JONATHAN H., SANDERS, ALBERT E. & LUO, ZHE-XI, 2005, A New Protocetid Whale (Cetacea: Archaeoceti) from the Late Middle Eocene of South Carolina, pp. 1-66 in American Museum Novitates 3480 (1) on page 22, DOI: 10.1206/0003-0082(2005)480[0001:ANPWCA]2.0.CO;2, http://zenodo.org/record/538308
- …
