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Phylloceras heterophyllum
Taxonomy
Ammonites heterophyllus was named by Sowerby (1820). It is not a trace fossil. It is the type species of Phylloceras.
It was recombined as Phylloceras (Phylloceras) heterophyllus by Wright and Kennedy (1984), Kennedy (1994); it was recombined as Phylloceras heterophyllus by Wright et al. (1996), Alsen (2006); it was recombined as Phylloceras heterophyllum by Howarth (1962), Jakobs (1997), Murphy and Rodda (2006), Kovács (2011).
It was recombined as Phylloceras (Phylloceras) heterophyllus by Wright and Kennedy (1984), Kennedy (1994); it was recombined as Phylloceras heterophyllus by Wright et al. (1996), Alsen (2006); it was recombined as Phylloceras heterophyllum by Howarth (1962), Jakobs (1997), Murphy and Rodda (2006), Kovács (2011).
Sister species lacking formal opinion data
P. andangonvatoense, P. ardescicum, P. bonarelli, P. captitanei, P. chantrei, P. chilense, P. cypris, P. doderienianum, P. duodesimsulcatum, P. ernesti, P. geyeri, P. glaber, P. hommophyllum, P. hourcqi, P. isomorphum, P. iudicarense, P. mazenoti, P. morelianum, P. nilsoni, P. onoense, P. perplanum, P. pinarense, P. plicatissimum, P. salima, P. selinoides, P. subobtusum, P. subramosum, P. triasicum, P. velledae, P. velledaeformis, P. biciolae, P. bassae, P. masiaposensum, P. pseudolateumbilicatum, P. sardoum, P. seretiense seretiense, P. sersitense, P. tethys, P. velledae, P. velledae, P. plicatum, P. spathi, P. guillantoni
Synonymy list
| Year | Name and author |
|---|---|
| 1820 | Ammonites heterophyllus Sowerby p. 119 figs. pl. 226 |
| 1962 | Phylloceras heterophyllum Howarth p. 405 |
| 1984 | Phylloceras (Phylloceras) heterophyllus Wright and Kennedy p. 38 |
| 1994 | Phylloceras (Phylloceras) heterophyllus Kennedy p. 216 |
| 1996 | Phylloceras heterophyllus Wright et al. p. 1 |
| 1997 | Phylloceras heterophyllum Jakobs p. 39 |
| 2006 | Phylloceras heterophyllus Alsen p. 122 |
| 2006 | Phylloceras heterophyllum Murphy and Rodda p. 25 |
| 2011 | Phylloceras heterophyllum Kovács p. 8 figs. Pl 1, figs 1-4 |
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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.
†Phylloceras heterophyllum Sowerby 1820
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Diagnosis
No diagnoses are available
Measurements
| part | N | mean | minimum | maximum | median | s.d. | |
|---|---|---|---|---|---|---|---|
| height | 2 | 52.9 | 50.0 | 56.0 | 53.0 | 4.24 | |
| diameter | 2 | 90.9 | 86.0 | 96.0 | 91.0 | 7.07 |
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| Source: o = order, c = class | |||||
| References: Kiessling 2004, Kiessling 2003, Hendy et al. 2009 | |||||
Age range: base of the Falciferum to the top of the Late/Upper Toarcian or 184.20000 to 174.70000 Ma
Collections (63 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Early/Lower Jurassic | Italy (Trento) | Ammonites heterophyllus (232106) | |
| Falciferum | Russian Federation | Phylloceras heterophyllum (50226) | |
| Falciferum | France (Vendée) | Phylloceras heterophyllum (147206) | |
| Falciferum | United Kingdom (Yorkshire) | Phylloceras heterophyllum (147832 147844 147856 147860 147861 147863 147865) | |
| Falciferum | Hungary | Phylloceras heterophyllum (147276 148233 148259 148260 148261 148262 148263 148264 148267 148268) | |
| Falciferum | Italy | Phylloceras heterophyllum (145310) | |
| Falciferum | Germany | Phylloceras heterophyllum (228509 228512) | |
| Middle Toarcian | Canada (British Columbia) | Phylloceras heterophyllum (55636) | |
| Bifrons | Hungary | Phylloceras heterophyllum (147241 147243 147246 147247 147262 148255 148256) | |
| Bifrons | Italy | Phylloceras heterophyllum (145323 147026 147027 147028 147029 147030 147031 147036 147039 147042) | |
| Bifrons | Russian Federation | Phylloceras heterophyllum (50220 50225 50231 50233) | |
| Bifrons | United Kingdom (Yorkshire) | Phylloceras heterophyllum (147868 147870 147873 147880 147881 147884 147885 147895 147898 147928) | |
| Levesquei - Thouarsense | Russian Federation | Phylloceras heterophyllum (50236) | |
| Middle Toarcian - Late/Upper Toarcian | Morocco (Taza-Al Hoceima-Taounate) | Phylloceras heterophyllum (234054) | |
| Variabilis | United Kingdom (Yorkshire) | Phylloceras heterophyllum (147930) | |
| Late/Upper Toarcian | United Kingdom (Yorkshire) | Phylloceras heterophyllum (219476) | |
| Thouarsense | Hungary | Phylloceras heterophyllum (147226 147229 147230) | |
| Thouarsense | Russian Federation | Phylloceras heterophyllum (50235) |