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Platypelta coombsi
Taxonomy
Platypelta coombsi was named by Penkalski (2018). Its type specimen is AMNH 5337, a partial skeleton, and it is a 3D body fossil. Its type locality is right bank, Sand Creek (125 ft level) [AMNH], which is in a Campanian terrestrial horizon in the Oldman Formation of Canada. It is the type species of Platypelta.
Synonymy list
| Year | Name and author |
|---|---|
| 2018 | Platypelta coombsi Penkalski p. 266–267 |
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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.
†Platypelta coombsi Penkalski 2018
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| P. Penkalski 2018 | A large (6+ m) ankylosaurine characterised primarily by the presence of large (>25 cm), rugose, sharply keeled, plate-like osteoderms, some with pointed, beak-like ends; snout constricted rostral to orbits; premaxillary scoop rounded and relatively narrow; vomer overlaps fused premaxillae caudally; occipital condyle large; squamosal horns low, rugose and broad-based, with (pitted) caudal apex; tooth crowns highly sculptured; weak ventral flexion of preacetabular process of ilium; ulna long, gracile; robust pes with arcuate pedal unguals; h.r.1 medial osteoderms elongate and partially keeled with conical prominence; h.r.1 laterals with caudal apex and curved but unkinked (i.e., non-sigmoidal) keel. P. coombsi is distinguished from Euoplocephalus and Anodontosaurus by skull shape and armour texture. P. coombsi is distinguished from D. acutosquameus in having only two sacral ribs aligned with the acetabulum, by one less sacrocaudal (4-3-1 count), by less curvature of the preacetabular process, by a more robust sc1, and by arcuate pedal unguals. P. coombsi differs from Scolosaurus, O. horneri, and Z. crurivastator in skull and squamosal horn shape. |
Measurements
No measurements are available
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| Source: o = order | |||||
| References: Marsh 1875, Kiessling 2004 | |||||
Age range: base of the Middle Campanian to the top of the Campanian or 83.60000 to 72.20000 Ma
Collections (7 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Campanian | Canada (Alberta) | Euoplocephalus sp. (type locality: 52476) | |
| Late/Upper Campanian | Canada (Alberta) | Ankylosauria indet. (58957) Ankylosauridae indet. (58759 155220) Euoplocephalus sp. (61625 155267) | |
| Middle Campanian - Late/Upper Campanian | Canada (Alberta) | Euoplocephalus sp. (155027) |