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Libonectes morgani
Taxonomy
Elasmosaurus morgani was named by Welles (1949). Its type specimen is SMUSMP 69120, a partial skeleton (skull, cervical vertebrae and pectoral girdle), and it is a 3D body fossil. Its type locality is Andy Anderson Farm, near Cedar Hill, which is in a Cenomanian/Turonian marine limestone in the Britton Formation of Texas.
It was recombined as Libonectes morgani by Carpenter (1997), Carpenter (1999), O'Keefe (2001) and O'Gorman (2019).
It was recombined as Libonectes morgani by Carpenter (1997), Carpenter (1999), O'Keefe (2001) and O'Gorman (2019).
Synonyms
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Synonymy list
Year | Name and author |
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1949 | Elasmosaurus morgani Welles pp. 7-24 figs. 1–3 & pls 1-6 |
1962 | Elasmosaurus morgani Welles pp. 3 & 56 |
1997 | Libonectes morgani Carpenter p. 214 |
1999 | Libonectes morgani Carpenter p. 157 |
2001 | Libonectes morgani O'Keefe p. 15 |
2005 | Libonectes atlasense Buchy pp. 6-17 figs. 1-10 |
2019 | Libonectes morgani O'Gorman |
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If no rank is listed, the taxon is considered an unranked clade in modern classifications. Ranks may be repeated or presented in the wrong order because authors working on different parts of the classification may disagree about how to rank taxa.
†Libonectes morgani Welles 1949
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Invalid names: Libonectes atlasense Buchy 2005 [synonym]
Diagnosis
Reference | Diagnosis | |
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S. P. Welles 1949 | Teeth 9/16; premaxillae extending posteriorly to form anterior part of pineal foramen, where they meet the parietals; nasal flat with rounded outline; prefrontal raised above the level of nasal; pineal foramen very narrow and forward between the orbits; 62 cervical vertebrae (possibly more). Length of skull 42.5 cm; neck, 561.8 cm. Atlas and axis completely fused, with a pronounced ventral spine. Prectrum with a well-devloped median bar; coracoids broadly expanded behind narrow shaft. Distal end of humerus with sharp posterior projection. Large epipodial foramen. |