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Utaetus magnum
Taxonomy
Utaetus magnum was named by Herrera et al. (2021). Its type specimen is IBIGEO-P 109, an osteoderm (11 fixed, two movables, and eight caudal complete osteoderms, in addition to numerous fragmentary osteoderms, all from the same individual), and it is a 3D body fossil. Its type locality is El Simbolar (upper Lumbrera), which is in an Eocene lacustrine mudstone/siltstone in the Lumbrera Formation of Argentina.
Synonymy list
| Year | Name and author |
|---|---|
| 2021 | Utaetus magnum Herrera 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.
†Utaetus magnum Herrera et al. 2021
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| C. Herrera et al. 2021 | Large cingulate of inferred size similar to the extant Euphractus sexcintus. Osteoderms larger than ?Utaetus deustus, and one and a half times larger than Utaetus buccatus, U. laxus, and U. argos. Lateral contact area straight, with denticular projections in their entire surface, as in Euphractinae. Fixed and movable osteoderms with a lageniform main figure, as in “Utaetini”, in Punatherium catamarcensis, and the basal euphractins Archaeutatus. Convex main figure, with a sharp and elevated central keel. In those osteoderms with large foramina on their surface, the main figure and keel rise above the level of the peripheral figures. Peripheral figures very convex to globose unlike U. buccatus, U. laxus, U. argos, and ?U. deustus. |
Measurements
No measurements are available
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| Source: f = family, subc = subclass, c = class, subp = subphylum | |||||
| References: Ji et al. 2002, Lillegraven 1979, Carroll 1988, Hendy et al. 2009, Nowak 1991 | |||||
Age range: Middle Eocene or 47.80000 to 37.71000 Ma
Collections: one only
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Middle Eocene | Argentina (Salta) | Utaetus magnum (type locality: 132937) |