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Hemiliroceras
Taxonomy
Hemiliroceras was named by Ruzhentsev and Shimanskiy (1954) [Sepkoski's age data: P Leon]. Its type is Hemiliroceras inflatum.
It was assigned to Nautilida by Sepkoski (2002); and to Liroceratidae by Teichert et al. (1964), Barskov and Shilovsky (2014) and Niko and Mapes (2016).
It was assigned to Nautilida by Sepkoski (2002); and to Liroceratidae by Teichert et al. (1964), Barskov and Shilovsky (2014) and Niko and Mapes (2016).
Species
H. artum, H. enucleatum, H. esaulovae, H. inflatum (type species), H. reticulatum, H. urtasimense, H. zhiltauense
Synonymy list
| Year | Name and author |
|---|---|
| 1954 | Hemiliroceras Ruzhentsev and Shimanskiy p. 125 |
| 1964 | Hemiliroceras Teichert et al. p. 447 |
| 2002 | Hemiliroceras Sepkoski |
| 2014 | Hemiliroceras Barskov and Shilovsky p. 1384 |
| 2016 | Hemiliroceras Niko and Mapes p. 76 |
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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. †Hemiliroceras Ruzhentsev and Shimanskiy 1954
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†Hemiliroceras artum Shchedukhin and Leonova 2020
†Hemiliroceras enucleatum Shimanskiy 1990
†Hemiliroceras esaulovae Barskov and Shilovsky 2014
†Hemiliroceras inflatum Ruzhentsev and Shimanskiy 1954
†Hemiliroceras reticulatum Miller and Owen 1937
†Hemiliroceras urtasimense Shimanskiy 1967
†Hemiliroceras zhiltauense Ruzhentsev and Shimanskiy 1954
Diagnosis
No diagnoses are available
Measurements
| part | N | mean | minimum | maximum | median | s.d. | |
|---|---|---|---|---|---|---|---|
| shell height | 22 | 14.0 | 9.00 | 38.0 | 13.5 | 5.86 | |
| shell diameter | 22 | 29.0 | 19.0 | 72.0 | 28.0 | 10.8 | |
| shell inflation | 22 | 5.70 | 0.001 | 16.0 | 8.00 | 2.84 |
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| Source: o = order, c = class | |||||
| References: Kiessling 2003, Kiessling 2004 | |||||
Age range: base of the Bashkirian to the top of the Roadian or 323.20000 to 268.80000 Ma
Collections (10 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Bashkirian - Moscovian | Russian Federation | H. enucleatum (166469) H. urtasimense (166520) | |
| Kasimovian | USA (Oklahoma) | Coloceras reticulatum (170338) H. reticulatum (177750) | |
| Missourian | USA (Texas) | Liroceras reticulatum (159901 159902) | |
| Artinskian | Kazakhstan | H. inflatum (116788) H. zhiltauense (102148) | |
| Artinskian | Russian Federation (Bashkortostan) | H. artum (217205) | |
| Roadian | Russian Federation | H. esaulovae (111240) |