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Latoplatecarpus nichollsae
Discussion
Semi-articulated skeleton, arranged as a panel mount, consisting of the premaxillae, maxillae, mandibles, basioccipital, frontoparietal skull table, postorbitofrontals, partial left squamosal, partial left supratemporal, quadrates, pterygoids, complete cervical vertebral series, twentythree dorsal vertebrae, eleven pygal vertebrae, five caudal vertebrae, ribs, scapulae, coracoids, humeri, radii, ulnae, left carpals and metacarpals (plus additional podials), left manual phalanges, left ilium, ?left ischium, ?left femur, left tibia and fibula, left astragalus, left calcaneum, left fourth distal tarsal, and left pedal phalanges.
Taxonomy
Plioplatecarpus nichollsae was named by Cuthbertson et al. (2007). Its type specimen is CMN 52261, a partial skeleton ("semi-articulated skeleton consisting of highly selenite-encrusted, overlapping skull elements, seven cervicals, 23 dorsal vertebrae, 11 pygal vertebrae, five c), and it is a 3D body fossil.
It was recombined as Latoplatecarpus nichollsae by Konishi and Caldwell (2011) and Driscoll et al. (2019).
It was recombined as Latoplatecarpus nichollsae by Konishi and Caldwell (2011) and Driscoll et al. (2019).
Synonymy list
| Year | Name and author |
|---|---|
| 2007 | Plioplatecarpus nichollsae Cuthbertson et al. |
| 2011 | Latoplatecarpus nichollsae Konishi and Caldwell pp. 776-777 |
| 2019 | Latoplatecarpus nichollsae Driscoll et al. |
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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.
†Latoplatecarpus nichollsae Cuthbertson et al. 2007
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| R. S. Cuthbertson et al. 2007 | "Dentigerous portion of premaxilla with scalloped outline in dorsal view; first set of premaxillary teeth procumbent; premaxillo-maxillary suture low, posteriorly ascending approximately at 30 degrees; posterior terminus of this suture above posterior edge of second maxillary tooth; posterior margin of narial border between fifth and sixth maxillary teeth; three maxillary teeth posterior to anterior margin of orbit; lateral borders of frontal anterior to frontal alae straight, running parallel with each other forming nearly rectangular shield anteriorly; median dorsal keel on frontal well developed; pair of ventro-lateral processes on frontal diverging anteriorly, flanking pair of parolfactory-bulb recesses; parietal foramen large, elongate oval with length greater than 1.6 times width; postorbital process of parietal extending laterally to or beyond posterolateral corner of frontal; postorbitofrontal with two distinct articular facets for frontal and parietal; basal tuber on basioccipital highly inflated; anterodorsal border of quadrate straight and oriented transversely; tympanic ala projecting laterally, forming right angle with long axis of suprastapedial process; suprastapedial process more than two-thirds total quadrate height; suprastapedial process wide with straight lateral margins; stapedial pit broadly ovate with straight lateral margins; posteroventral margin of quadrate shaft straight in side view; mandibular condyle transversely wide; surangular forming at least 50% of glenoid fossa; retroarticular process short and round; 12 maxillary and dentary teeth; incipient, non-functional zygosphenes and zygantra present at least on third cervical vertebra; scapular blade semicircular, semi-equal in size to coracoid blade; humeral pectoral crest robust; at least 11 pygal vertebrae." | |
| T. Konishi and M. W. Caldwell 2011 | "Preorbital borders of frontal straight or laterally expanded, resulting in various degrees of interorbital constriction; frontal ala distally rounded; parietal foramen length:width ratio at least 1.5, typically exceeding 1.6; surangular dorsal border slightly concave; intervertebral joints with low degree of curvature; at least 11 pygal vertebrae; adult body size among largest in plioplatecarpines, with mandible occasionally reaching 1 m in total length, amounting to total body length well over 8 m." |
Measurements
No measurements are available
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| Source: f = family, c = class, subp = subphylum, uc = unranked clade | |||||
| References: Hendy et al. 2009, Gervais 1852, Carroll 1988 | |||||
Age range: Early/Lower Campanian or 83.50000 to 70.60000 Ma
Collections (3 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Early/Lower Campanian | Canada (Manitoba) | Plioplatecarpus nichollsae (23366 36446 96685) |