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Plaxhaplus antiquus
Taxonomy
Doedicurus antiquus was named by Ameghino (1887). Its type specimen is MLP 16-55 and is a 3D body fossil.
It was recombined as Plaxhaplus antiquus by Ameghino (1889) and Rovereto (1914); it was misspelled as Doedicurus anticuus by Moreno (1888) and Lydekker (1894); it was recombined as Eleutherocercus antiquus by Ameghino (1887) and Nuñez-Blasco et al. (2023).
It was recombined as Plaxhaplus antiquus by Ameghino (1889) and Rovereto (1914); it was misspelled as Doedicurus anticuus by Moreno (1888) and Lydekker (1894); it was recombined as Eleutherocercus antiquus by Ameghino (1887) and Nuñez-Blasco et al. (2023).
Synonyms
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Synonymy list
| Year | Name and author |
|---|---|
| 1887 | Eleutherocercus antiquus Ameghino |
| 1888 | Doedicurus anticuus Moreno p. 9 |
| 1888 | Doedicurus copei Moreno p. 10 figs. not figured |
| 1889 | Plaxhaplus antiquus Ameghino p. 850 |
| 1894 | Daedicurus antiquus Lydekker p. 41 |
| 1914 | Plaxhaplus antiquus Rovereto p. 154 |
| 2023 | Eleutherocercus antiquus Nuñez-Blasco 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.
†Plaxhaplus antiquus Ameghino 1887
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Invalid names: Doedicurus copei Moreno 1888 [synonym]
Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| A. Nuñez-Blasco et al. 2023 | Glyptodont similar in size to E. solidus (Table S3). In frontal view, the nasal openings are sub-rectangular with curved maxillary margins, similar to Doedicurus but different from E. solidus in which the maxillary margins are straight. In dorsal view, the rostral area is sub-triangular; the zygomatic arches are anteriorly wider than pos- teriorly. In lateral view, the posterior margin of the orbital notch is vertical, delimiting an angle with respect to the palatal plane of ca. 90°, as in E. solidus; but E. antiquus has a marked bony ridge on the ventral margin of the orbital notch, very similar to Doedicurus. In occlusal view, the palates are transversally expanded at the level of Mf1, as in Doedicurus and both are more expanded than in E. solidus. The ornamentation pattern of the osteoderms of the dorsal carapace is very similar to E. solidus, but with the large foramina more clustered in the central region of each osteoderm and fewer small foramina. |