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Meridiosaurus vallisparadisi
Taxonomy
Meridiosaurus vallisparadisi was named by Mones (1980). Its type specimen is FC-DPV-2322 (formerly SPV-FHC 27.II.78.1), a skull (Anterior part of rostrum, mandible fragments, one osteoderm, and unidentifiable fragments), and it is a 3D body fossil. Its type locality is Los Rosanos, Valle Edén, which is in a Kimmeridgian/Tithonian terrestrial sandstone in the Tacuarembó Formation of Uruguay. It is the type species of Meridiosaurus.
Synonymy list
| Year | Name and author |
|---|---|
| 1980 | Meridiosaurus vallisparadisi Mones pp. 265-266 figs. Pl. 1 |
| 2011 | Meridiosaurus vallisparadisi Fortier 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.
†Meridiosaurus vallisparadisi Mones 1980
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| D. Fortier et al. 2011 | Longirostrine mesoeucrocodylian with the following combination of features: (1) lateral constriction of the rostrum at premaxilla–maxilla contact, strong lateral expansion of the premaxilla with the fifth tooth placed in the widest portion; (2) sinusoidal premaxilla–maxilla suture in palatal view, posteromedially directed on its lateral half and anteromedially directed along its medial region; (3) evaginated maxillary alveolar edges forming a discrete collar at each alveolus, lateroventrally oriented; (4) greater number of maxillary teeth (at least 27) with respect to Elosuchus (less than 20 maxillary teeth); (5) nasals do not meet premaxilla dorsally; (6) strong sinusoidal lateral contour of snout in dorsal view, with respect to the similar condition of Elosuchus, forming two waves (‘festooned’); and (7) third, fourth, and fifth alveoli are equally enlarged. |
Measurements
No measurements are available
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| Source: subo = suborder, c = class, subp = subphylum, uc = unranked clade | |||||
| References: Benton 1983, Kiessling 2004, Hendy et al. 2009, Carroll 1988, Bush and Bambach 2015 | |||||
Age range: base of the Kimmeridgian to the top of the Tithonian or 154.80000 to 143.10000 Ma
Collections: one only
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Kimmeridgian - Tithonian | Uruguay (Tacuarembó) | Meridiosaurus vallisparadisi (type locality: 83735) |