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Holcolytoceras
Taxonomy
Holcolytoceras was named by Spath (1924) [Sepkoski's age data: J Plie-l J Toar-u Sepkoski's reference number: 1066]. It is not extant. Its type is Ammonites nodostrictus.
It was assigned to Ammonoidea by Sepkoski (2002); to Holcolytoceratidae by Venturi et al. (2005); to Lytoceratidae by Wiedmann (1970), Geczy and Meister (2007); and to Ectocentritinae by Hoffmann (2010).
It was assigned to Ammonoidea by Sepkoski (2002); to Holcolytoceratidae by Venturi et al. (2005); to Lytoceratidae by Wiedmann (1970), Geczy and Meister (2007); and to Ectocentritinae by Hoffmann (2010).
Species
Synonymy list
| Year | Name and author |
|---|---|
| 1924 | Holcolytoceras Spath p. 189 |
| 1970 | Holcolytoceras Wiedmann p. 988 |
| 2002 | Holcolytoceras Sepkoski |
| 2005 | Holcolytoceras Venturi et al. p. 91 |
| 2007 | Holcolytoceras Geczy and Meister |
| 2010 | Holcolytoceras Hoffmann p. 14 |
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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. †Holcolytoceras Spath 1924
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†Holcolytoceras nodostrictum Quenstedt 1885
†Holcolytoceras raui Wiedmann 1970
Diagnosis
No diagnoses are available
Measurements
| part | N | mean | minimum | maximum | median | s.d. | |
|---|---|---|---|---|---|---|---|
| shell height | 6 | 4.28 | 3.60 | 5.80 | 4.00 | 0.985 | |
| shell diameter | 6 | 15.6 | 11.5 | 37.0 | 12.4 | 10.00 | |
| shell inflation | 6 | 6.50 | 5.50 | 9.00 | 6.00 | 1.61 |
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| Source: o = order, c = class | |||||
| References: Kiessling 2004, Kiessling 2003 | |||||
Age range: base of the Raricostatum to the top of the Ibex or 196.50000 to 183.00000 Ma
Collections (4 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Obtusum - Raricostatum | Hungary (Veszprém Megye) | H. raui (78285) | |
| Raricostatum - Ibex | Hungary | H. nodostrictum (78689) | |
| Ibex | Germany | H. raui, H. nodostrictum (173633 173634) |