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Stereognathus
Taxonomy
Stereognathus was named by Charlesworth (1854). Its type is Stereognathus ooliticus. It was considered monophyletic by Waldman and Savage (1972).
It was assigned to Mammalia by Owen (1859); to Marsupialia by Owen (1871); to Allotheria by Marsh (1889); and to Tritylodontidae by Simpson (1928), Simpson (1929), Waldman and Savage (1972), Carroll (1988), Maisch et al. (2004) and Panciroli et al. (2017).
It was assigned to Mammalia by Owen (1859); to Marsupialia by Owen (1871); to Allotheria by Marsh (1889); and to Tritylodontidae by Simpson (1928), Simpson (1929), Waldman and Savage (1972), Carroll (1988), Maisch et al. (2004) and Panciroli et al. (2017).
Species
Synonyms
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Synonymy list
| Year | Name and author |
|---|---|
| 1854 | Stereognathus Charlesworth |
| 1859 | Stereognathus Owen p. 159 |
| 1871 | Stereognathus Owen pp. 18, 115 |
| 1889 | Stereognathus Marsh |
| 1928 | Stereognathus Simpson p. 22 |
| 1929 | Stereognathus Simpson p. 11 |
| 1972 | Stereognathus Waldman and Savage |
| 1988 | Stereognathus Carroll |
| 1999 | Xenocretosuchus Tatarinov and Matchenko |
| 2004 | Stereognathus Maisch et al. |
| 2008 | Xenocretosuchus Tatarinov |
| 2009 | Xenocretosuchus Kolosov et al. |
| 2017 | Stereognathus Panciroli et al. p. 4 |
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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. †Stereognathus Charlesworth 1854
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†Stereognathus ooliticus Charlesworth 1854
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Invalid names: Stereognathus hebridicus Waldman and Savage 1972 [synonym]
Invalid names: Xenocretosuchus Tatarinov and Matchenko 1999 [synonym]
Diagnosis
No diagnoses are available
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 Early/Lower Bathonian to the top of the Aptian or 167.70000 to 113.00000 Ma
Collections (15 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Bathonian | Russian Federation (Krasnoyarsk) | Tritylodontidae indet. (61891) | |
| Bathonian | United Kingdom (Scotland) | S. hebridicus (139746) | |
| Early/Lower Bathonian | United Kingdom (England) | S. sp. (31054) | |
| Late/Upper Bathonian | United Kingdom (England) | S. sp. (39075 57124 57125 57139 166423 224639) | |
| Middle Bathonian | United Kingdom (England) | S. ooliticus (59357) S. sp. (92055) | |
| Berriasian - Barremian | Russian Federation (Sakha) | Xenocretosuchus kolossovi (32313) | |
| Barremian - Aptian | Russian Federation (Krasnoyarsk) | Xenocretosuchus sp. (53148) | |
| Barremian - Aptian | Russian Federation (Kemerovo) | Xenocretosuchus sp. (167304) | |
| Aptian | Russian Federation (Kemerovo) | Xenocretosuchus sibiricus (39680) |