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Euphylloceras californicum
Taxonomy
Phylloceras californicum was named by Anderson (1938). It is a 3D body fossil. Its type locality is CAS loc. 1569, East branch of Hulen (=Huling) Creek, which is in an Aptian/Albian marine horizon in the Budden Canyon Formation of California.
It was recombined as Hypophylloceras californicum by McLearn (1972); it was recombined as Euphylloceras californicum by Murphy and Rodda (2006) and Matsukawa (2021).
It was recombined as Hypophylloceras californicum by McLearn (1972); it was recombined as Euphylloceras californicum by Murphy and Rodda (2006) and Matsukawa (2021).
Synonymy list
| Year | Name and author |
|---|---|
| 1938 | Phylloceras californicum Anderson p. 143 figs. pl. 12, fig. 7 |
| 1972 | Hypophylloceras californicum McLearn p. 22 |
| 2006 | Euphylloceras californicum Murphy and Rodda pp. 34 - 39 figs. Plate 1, Figures 3, 9-16; Plate 2, Figures 2- 4, 6-11; Plate 3, Figures. 1, 3, 5, 7, 8; Text- figure |
| 2021 | Euphylloceras californicum Matsukawa p. 3 fig. 3A |
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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.
†Euphylloceras californicum Anderson 1938
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| M. A. Murphy and P. U. Rodda 2006 | A Euphylloceras with an elliptical or oval cross section (B-3, C-3)complexly frilled mature suture with diphyllic E/L and L/U2, becoming polyphyllic in large shells, immature whorls with prominent rectiradiate constrictions. |
Measurements
No measurements are available
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| Source: o = order, c = class | |||||
| References: Hendy et al. 2009, Kiessling 2004, Kiessling 2003 | |||||
Age range: base of the Late/Upper Aptian to the top of the Albian or 122.46000 to 100.50000 Ma
Collections (18 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Late/Upper Aptian | USA (California) | Phylloceras californicum (216334 216343 216353 216354 216355 216356 216360) | |
| Late/Upper Aptian | Japan (Nagano) | Euphylloceras californicum (220846) | |
| Late/Upper Aptian - Early/Lower Albian | USA (California) | Phylloceras californicum (216368 225523) | |
| Albian | USA (Alaska) | Hypophylloceras californicum (38516) | |
| Albian | Canada (British Columbia) | Hypophylloceras californicum (87482 87488 87500) | |
| Late/Upper Albian | Canada (British Columbia) | Hypophylloceras californicum (87690 87691 87714 87720) |