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Arnioceras arnouldi
Taxonomy
Ammonites arnouldi was named by Dumortier (1867).
It was recombined as Epammonites arnouldi by Spath (1922); it was recombined as Arnioceras arnouldi by Rakús and Guex (2002), Geczy and Meister (2007).
It was recombined as Epammonites arnouldi by Spath (1922); it was recombined as Arnioceras arnouldi by Rakús and Guex (2002), Geczy and Meister (2007).
Sister species lacking formal opinion data
A. acuticarinatum, A. anageneticum, A. angusticostatum, A. angusticostatus, A. bucklandi, A. carenatum, A. crassicosta, A. densicosta, A. dimorphum, A. falcaries, A. flavum, A. hartmani, A. hartmanni, A. kridioides, A. kridion, A. laevissimum, A. nigrum, A. nodulosum, A. obliquecostatum, A. oppeli, A. paucicostatum, A. repens, A. semicostatoides, A. speciosurn, A. speciusum, A. spirale, A. sulcatum
Synonymy list
| Year | Name and author |
|---|---|
| 1867 | Ammonites arnouldi Dumortier |
| 1922 | Epammonites arnouldi Spath |
| 2002 | Arnioceras arnouldi Rakús and Guex p. 80 figs. Pl 12, fig 3; text-fig 63 |
| 2007 | Arnioceras arnouldi Geczy and Meister |
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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.
†Arnioceras arnouldi Dumortier 1867
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Diagnosis
No diagnoses are available
Measurements
| part | N | mean | minimum | maximum | median | s.d. | |
|---|---|---|---|---|---|---|---|
| shell diameter | 3 | 63.1 | 28.5 | 103.4 | 85.3 | 39.1 |
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| Source: o = order, c = class | |||||
| References: Kiessling 2004, Kiessling 2003 | |||||
Age range: Semicostatum or 199.50000 to 192.90000 Ma
Collections (27 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Early/Lower Jurassic | Canada (British Columbia) | Arnioceras arnouldi (199624 199629 199686) | |
| Early/Lower Sinemurian | Mexico (Sonora) | Arnioceras arnouldi (208239 208240) | |
| Early/Lower Sinemurian | France (Bourgogne-Franche-Comté) | Arnioceras arnouldi (234373) | |
| Early/Lower Sinemurian | Canada (British Columbia) | Arnioceras arnouldi (198432 198437) | |
| Late/Upper Sinemurian | Hungary (Veszprém Megye) | Arnioceras arnouldi (78278) | |
| Late/Upper Sinemurian | Canada (British Columbia) | Arnioceras arnouldi (198493) | |
| Obtusum - Raricostatum | Hungary (Veszprém Megye) | Arnioceras arnouldi (78211 78410) | |
| Semicostatum | USA (Alaska) | Arnioceras arnouldi (68732) | |
| Semicostatum | Tunisia | Arnioceras arnouldi (170502) | |
| Sinemurian | USA (Nevada) | Arnioceras arnouldi (201193 201196 201199 201202 201204 201263 201264 201265 201266 201267) | |
| Sinemurian | United Kingdom (Gloucestershire) | Arnioceras arnouldi (204152) | |
| Sinemurian | Canada (British Columbia) | Arnioceras arnouldi (37496) | |
| Sinemurian | United Kingdom (Skye) | Epammonites arnouldi (219969) |