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Dagnoceras
Taxonomy
Dagnoceras was named by Arthaber (1911) [Sepkoski's age data: Tr Olen-u Sepkoski's reference number: 302]. It is not extant. Its type is Dagnoceras nopcsanum.
It was assigned to Dagnoceratinae by Spath (1934); to Meekoceratidae by Kummel (1969); to Dinaritinae by Tozer (1981); to Ceratitida by Sepkoski (2002); and to Dinaritidae by Mertmann and Jacobshagen (2003).
It was assigned to Dagnoceratinae by Spath (1934); to Meekoceratidae by Kummel (1969); to Dinaritinae by Tozer (1981); to Ceratitida by Sepkoski (2002); and to Dinaritidae by Mertmann and Jacobshagen (2003).
Species
D. ellipticum, D. latilobatum, D. nopcsanum (type species), D. obesum, D. zappanense (syn. D. lejanum)
Synonymy list
| Year | Name and author |
|---|---|
| 1911 | Dagnoceras Arthaber |
| 1934 | Dagnoceras Spath |
| 1969 | Dagnoceras Kummel |
| 1981 | Dagnoceras Tozer p. 91 |
| 2002 | Dagnoceras Sepkoski |
| 2003 | Dagnoceras Mertmann and Jacobshagen p. 428 |
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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. †Dagnoceras Arthaber 1911
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†Dagnoceras ellipticum Chao 1959
†Dagnoceras latilobatum Chao 1959
†Dagnoceras nopcsanum Arthaber 1911
†Dagnoceras obesum Guo 1982
Diagnosis
No diagnoses are available
Measurements
| part | N | mean | |||||
|---|---|---|---|---|---|---|---|
| shell height | 1 | 11.5 | |||||
| shell diameter | 1 | 23.0 | |||||
| shell inflation | 1 | 5.50 |
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| Source: o = order, c = class | |||||
| References: Kiessling 2004, Kiessling 2003 | |||||
Age range: Olenekian or 251.20000 to 247.20000 Ma
Collections (10 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Smithian | China (Anhui) | D. sp. (149183) | |
| Spathian | China (Guangxi) | D. ellipticum (44004) D. latilobatum (44007) | |
| Spathian | Albania | D. zappanense, D. nopcsanum, D. lejanum (97000) | |
| Spathian | Indonesia (Timor) | D. lejanum (111021) | |
| Spathian | Indonesia | D. lejanum (214984) | |
| Spathian | USA (Idaho) | D. sp. (109418) D. zappanense (109414) | |
| Olenekian | Greece | D. sp. (73174) | |
| Olenekian | Iran (Isfahan) | D. nopscanum (211340) |