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Cherminsaurus
Taxonomy
Cherminsaurus was named by Sulimski (1975). Its type is Cherminsaurus kozlowskii.
It was assigned to Polyglyphanodontidae by Sulimski (1975); to Teiidae by Carroll (1988), Gao and Fox (1991), Alifanov (1993); to Macrocephalosauridae by Alifanov (2000); to Cherminsauridae by Alifanov (2000); and to Polyglyphanodontinae by Estes (1983), McCord (1998), Gao and Norell (2000), Xu et al. (2014).
It was assigned to Polyglyphanodontidae by Sulimski (1975); to Teiidae by Carroll (1988), Gao and Fox (1991), Alifanov (1993); to Macrocephalosauridae by Alifanov (2000); to Cherminsauridae by Alifanov (2000); and to Polyglyphanodontinae by Estes (1983), McCord (1998), Gao and Norell (2000), Xu et al. (2014).
Species
C. kozlowskii (type species), C. tereschenkoi
Synonymy list
| Year | Name and author |
|---|---|
| 1975 | Cherminsaurus Sulimski p. 81 figs. 13-14 |
| 1983 | Cherminsaurus Estes |
| 1988 | Cherminsaurus Carroll |
| 1991 | Cherminsaurus Gao and Fox |
| 1993 | Cherminsaurus Alifanov p. 10 |
| 1998 | Cherminsaurus McCord p. 289 fig. 3 |
| 2000 | Cherminsaurus Alifanov |
| 2000 | Cherminsaurus Gao and Norell p. 73 |
| 2014 | Cherminsaurus Xu 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.
G. †Cherminsaurus Sulimski 1975
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†Cherminsaurus kozlowskii Sulimski 1975
†Cherminsaurus tereschenkoi Alifanov 2000
Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| A. Sulimski 1975 | Dental formula pm2+m18/d?18. Cheek teeth large, with diagonally arranged crowns at a mean angle of about 30° to longitudinal jaw axis. Cutting edges of cheek teeth with five or six low, bluntly pointed cusps. Tooth replacement of iguanid type. Tooth implantation subpleurodont. Premaxilla with very short dorsal process. Nasals rectangular in shape, with short medio-anterior ends and wedged suture to frontals. Frontals relatively short, unfused, widened posteriorly and narrowed anteriorly. Parietal long constricted centrally and widened anteriorly. Divergence between posterior processes of parietal at about an angle of 60°. Anterior end of subtriangular prefrontal contacts nasal. Jugal deep, with short, bluntly ended postero-ventral tuber. Jugal laterally connected with postorbital and reaches squamosal. Postfrontal short with proximally forked processes. Postorbital with very short antero-dorsal process. Squamosal short, triangular and more dorsoventrally arranged. Supratemporal probably present. Posterior crest of quadrate prominent, long, but shorter than length of external conch and perpendicularly inward directed. Inner side of quadrate without wing-like process. Supraoccipital with weak sagittal crest. Paroccipital process with slender ends. Vomers wide and short. Low ventral raphae on the midline of vomers present. Palatines long, wide, probably separated by vomers and pterygoids from the midline of palate. Pterygoids strong with outwardly directed posterior processes. Interpterygoid vacuity short, wide in posterior part and very narrow between anterior parts of pterygoids. Suborbital fenestra small, reduced in size, anteroposteriorly elongated. Coronoid process relatively high, with a slightly backwardly directed tip. Retroarticular process wide, long, massively constructed. |
Measurements
No measurements are available
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| Source: g = genus, c = class, subp = subphylum, uc = unranked clade | |||||
| References: Kiessling 2004, Carroll 1988, Hendy et al. 2009, Gao and Norell 2000 | |||||
Age range: base of the Middle Campanian to the top of the Late/Upper Campanian or 83.60000 to 72.20000 Ma
Collections (3 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Middle Campanian - Late/Upper Campanian | Mongolia (Omnogov) | C. kozlowskii (13777 62914) C. tereschenkoi (118256) |