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Tremacyllus incipiens
Taxonomy
Tremacyllus incipiens was named by Rovereto (1914).
It was synonymized subjectively with Tremacyllus impressus by Sostillo et al. (2018).
It was synonymized subjectively with Tremacyllus impressus by Sostillo et al. (2018).
Synonyms
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Synonymy list
| Year | Name and author |
|---|---|
| 1914 | Tremacyllus incipiens Rovereto p. 46 figs. Fig. 21b |
| 1914 | Tremacyllus latifrons Rovereto p. 47 figs. Fig. 21a |
| 2018 | Tremacyllus incipiens Vera and Ercoli |
| 2022 | Tremacyllus incipiens Armella 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.
†Tremacyllus incipiens Rovereto 1914
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Invalid names: Tremacyllus latifrons Rovereto 1914 [synonym]
Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| M. A. Armella et al. 2022 | Excavated palate; P2 elliptical with its major axis almost mesiodistally oriented, markedly proportionally smaller than P3 and P4, and the P2 of Tremacyllus impressus; P3 elliptical with its major axis obliquely oriented (distolingual-mesiolabially); P4 with almost rectangular distolingual face with rounded edges, ectoloph slightly concave in the distal section and convex near the parastyle region, straight distal face oriented perpendicular to the mesiodistal axis of the tooth and mesial face obliquely oriented (distolingual-mesiolabially) well-differentiated from lingual one, both forming an obtuse angle; upper premolars clearly less imbricated than in Tremacyllus impressus (modified from Rovereto 1914; Cerdeño & Bond 1998). |
Measurements
No measurements are available
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| Source: o = order, subc = subclass, c = class, subp = subphylum | |||||
| References: MacFadden et al. 1996, Hendy et al. 2009, Ji et al. 2002, Carroll 1988, Lillegraven 1979 | |||||
Age range: base of the Messinian to the top of the Early/Lower Pliocene or 7.24600 to 3.60000 Ma
Collections (7 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Late/Upper Miocene - Early/Lower Pliocene | Argentina (Catamarca) | Tremacyllus incipiens (232594) | |
| Huayquerian | Argentina (Catamarca) | Tremacyllus incipiens (198547 206028) | |
| Messinian | Argentina (Catamarca) | Tremacyllus incipiens (198820) | |
| Messinian - Zanclean | Argentina (Catamarca) | Tremacyllus incipiens (204710) | |
| Zanclean | Argentina (Catamarca) | Tremacyllus latifrons, Tremacyllus incipiens (198549) | |
| Montehermosan - Chapadmalalan | Argentina (Catamarca) | Tremacyllus latifrons (157795) |