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Antarctopelta oliveroi
Taxonomy
Antarctopelta oliveroi was named by Salgado and Gasparini (2006). Its type specimen is MLP 86-X-28-1, a set of postcrania (cranial fragments, left dentary fragment with in situ tooth, three isolated teeth, two cervical vertebrae and latex cast prepared from natural mould of three ar), and it is a 3D body fossil. Its type locality is DG6-1, Santa Marta Cove, which is in a Campanian marginal marine sandstone/sandstone in the Snow Hill Island Formation of Antarctica. It is the type species of Antarctopelta.
It was considered a nomen dubium by Arbour and Currie (2016).
It was considered a nomen dubium by Arbour and Currie (2016).
Synonymy list
| Year | Name and author |
|---|---|
| 2006 | Antarctopelta oliveroi Salgado and Gasparini pp. 121-122 figs. 2-9 |
| 2008 | Antarctopelta oliveroi Coria et al. p. 25R |
| 2011 | Antarctopelta oliveroi Coria et al. p. R10 |
| 2013 | Antarctopelta oliveroi Coria et al. p. 186 |
| 2013 | Antarctopelta oliveroi Otero and Reguero p. 16 |
| 2016 | Antarctopelta oliveroi Rozadilla et al. p. 37 |
| 2016 | Antarctopelta oliveroi Salisbury et al. p. 126 |
| 2024 | Antarctopelta oliveroi Soto-Acuña 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.
†Antarctopelta oliveroi Salgado and Gasparini 2006
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| L. Salgado and Z. Gasparini 2006 | Medium-sized ankylosaur, estimated length of no more than 4 m; cervical centra short (centrum length about 70% of the centrum height), morphologically most similar to Silvisaurus Eaton, 1960, with the anterior articular faces higher than the posterior ones, as in Edmontonia rugosidens Gilmore, 1930; anterior caudal vertebrae with relatively slender transverse processes; centra of the posteriormost caudals notably dorsoventrally depressed, with articular faces slightly anteriorly inclined and laterally expanded, transverse processes of the posterior caudals well developed (transverse processes length about 40% of the centrum width), dorsoventrally depressed, and positioned within the anterior half of the vertebral centrum; at least six morphotypes of postcranial osteoderms, including 1-narrow and spine-shaped, 2-ovoid plate-like with a rugose surface texture, 3-plate-like with a smooth surface texture, 4-polygonal with a rugose texture, 5-shield-shaped with a dorsal keel, and 6-small (less than 5 mm in diameter) button-like. | |
| S. Rozadilla et al. 2016 | distal caudal vertebrae, with well developed and anteroposteriorly expanded transverse processes | |
| S. Soto-Acuña et al. 2024 | Mid-size ankylosaur with a total length estimated of 4 m, which possess the following combination of characters: asymmetrical teeth cheek with at least 7 denticles in the mesial border, with marked vertical ridges confluents with the denticles in the lingual side and ornamented cingulum with fine striations; unfused scapular girdle; metatarsal IV with a proximal epiphysis noticeably wider than the rest of the metatarsals; well-marked striations present in the supracetabular shelf; sacral shield filling the space between both ilia, covering the sacral neural spines, ornamented with several irregular sulci and pits; presence of intradermal ossicles of around 8 mm of diameter. |
Measurements
No measurements are available
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| Source: o = order | |||||
| References: Kiessling 2004, Marsh 1875 | |||||
Age range: Late/Upper Campanian or 83.60000 to 72.20000 Ma
Collections: one only
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Late/Upper Campanian | Antarctica | Thyreophora indet. (type locality: 47059) |