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Nycteroleter ineptus
Taxonomy
Nycteroleter ineptus was named by Efremov (1938). Its type specimen is PIN 158/9, a skull, and it is a 3D body fossil. Its type locality is Kiselikha, PIN 158, Lower Mezen' River, which is in a Kazanian/Urzhumian terrestrial horizon in the Russian Federation. It is the type species of Nycteroleter.
Synonymy list
| Year | Name and author |
|---|---|
| 1938 | Nycteroleter ineptus Efremov p. 776 fig. 5 |
| 1940 | Nycteroleter ineptus Efremov p. 413 |
| 1946 | Nycteroleter ineptus Colbert p. 260 |
| 1955 | Nycteroleter ineptus Chudinov p. 915 |
| 1962 | Nycteroleter ineptus Olson p. 21 |
| 1972 | Nycteroleter ineptus Carroll et al. p. 79 |
| 1997 | Nycteroleter ineptus Ivakhnenko p. 553 fig. 1 |
| 2008 | Nycteroleter ineptus Ivakhnenko |
| 2012 | Nycteroleter ineptus Tsuji et al. p. 56 |
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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.
†Nycteroleter ineptus Efremov 1938
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| I. A. Efremov 1938 | Skull triangular in shape with a somewhat pointed snout. Nostrils of elongated oval shape, placed laterally and widely separated. The size of the orbits is smaller than that of the Nyctiphruretus. Behind the orbits in the temporal section of the roof of the cranium lie deep grooves covered from the top by overhanging horn-like occipital processes. The bones of the skull roof are with pitted sculpture. The medial sides of the pterygoidea are strongly uplifted at the suture with the basisphenoideum. Teeth somewhat more pointed than in Nyctiphruretus, exhibiting original differentiation, their apexes faintly recurved. |
Measurements
No measurements are available
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| Source: c = class, subp = subphylum, uc = unranked clade | |||||
| References: Carroll 1988, Hendy et al. 2009 | |||||
Age range: base of the Late/Upper Kazanian to the top of the Urzhumian or 272.50000 to 264.28000 Ma
Collections (2 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Late/Upper Kazanian - Urzhumian | Russian Federation (Arkhangelsk) | Nycteroleter ineptus (type locality: 79948 187645) |