Elasmosauridae, Vakil & Webb & Cook, 2021
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publication ID |
https://doi.org/ 10.26879/1095 |
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persistent identifier |
https://treatment.plazi.org/id/039687B5-D658-FFA3-1CB9-29B44C3BFA71 |
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treatment provided by |
Felipe |
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scientific name |
Elasmosauridae |
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Elasmosauridae gen. et sp. indet. (QM F171282)
Figure 11 View FIGURE 11 A-C
Material. Single, isolated cervical centrum, free of matrix.
Locality. Flinders River, about 4.8 km from Richmond.
Stratigraphic horizon. Toolebuc Formation (late Albian).
Description. One anterior cervical with distinct foramina subcentralia separated by a mid-ventral keel ( Figure 11C View FIGURE 11 ) on the ventral surface and neural arches fused to the centrum ( Figure 11B View FIGURE 11 ) with lateral ridges and dumbbell-shaped articular facets ( Figure 11A View FIGURE 11 ) (CW = 108.4 mm; CL = 98.8 mm; CH = 88.35 mm).
Remarks. The vertebra has typical elasmosaurid characteristics (lateral ridges and dumbbell-shaped articular facets) (Otero et al., 2014; Sachs and Kear, 2017). Based on the size and osteological immaturity of the vertebra with open neurocentral sutures (Brown, 1981), the specimen appears to be a subadult-adult. Apparently, no other material was recovered for this individual.
Specimen PL (unregistered Queensland Museum specimen)
Figure 11 View FIGURE 11 D-F
Referred material. Two isolated cervical vertebrae (designated as PL1 and PL2).
Locality. Unknown, but Australian and thought to be central Queensland.
Stratigraphic horizon. Unknown.
Description. Two anterior cervicals with distinct foramina subcentralia ( Figure 11E View FIGURE 11 ) and distinct lateral ridges ( Figure 11D View FIGURE 11 ); parts of neural arches fused to the centra ( Figure 11F View FIGURE 11 ) (CW = 76.7 – 78.4 mm; 77.1 – 81.1 mm; CH = 66.2 – 64.2 mm).
Remarks. Based on the size and osteological immaturity of the vertebrae, with open neurocentral sutures (Brown, 1981), this specimen appears to be a subadult. No notes accompany these vertebrae and their exact locality and horizon are unknown. Nevertheless, they were included in this study as they could be identified as elasmosaur vertebrae (lateral ridges and dumbbell-shaped articular facets) (Otero et al., 2014; Sachs and Kear, 2017).
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