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Romaniceras (Romaniceras) mexicanum
Taxonomy
Romaniceras mexicanum was named by Jones (1938).
It was recombined as Romaniceras (Romaniceras) mexicanum by Kennedy and Cobban (1988), Kennedy and Cobban (1988), Sealey and Lucas (2011) and Amédro et al. (2016).
It was recombined as Romaniceras (Romaniceras) mexicanum by Kennedy and Cobban (1988), Kennedy and Cobban (1988), Sealey and Lucas (2011) and Amédro et al. (2016).
Sister species lacking formal opinion data
Synonyms
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Synonymy list
| Year | Name and author |
|---|---|
| 1938 | Romaniceras indiduraense Jones pp. 119 - 120 figs. Plate 7, figures 2-4 |
| 1938 | Romaniceras adkinsi Jones p. 120 figs. Pl 8, figs 4,5 |
| 1938 | Romaniceras mexicanum Jones p. 121 figs. Pl 7, figs 1,6 |
| 1938 | Romaniceras santaanaense Jones p. 121 figs. Pl 8, figs 1,6 |
| 1938 | Romaniceras toribioense Jones p. 122 figs. Pl 7, figs 7,8 |
| 1988 | Romaniceras (Romaniceras) mexicanum Kennedy and Cobban p. 25 figs. 2, 3, 5, 6A-D,G, 7-10 |
| 2011 | Romaniceras (Romaniceras) mexicanum Sealey and Lucas p. 373 figs. 3J-K |
| 2016 | Romaniceras (Romaniceras) mexicanum Amédro et al. figs. Pl 2, figs A-D; pl 3, figs C,D |
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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.
†Romaniceras (Romaniceras) mexicanum Jones 1938
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Invalid names: Romaniceras (Romaniceras) indiduraense Jones 1938 [synonym], Romaniceras adkinsi Jones 1938 [synonym], Romaniceras santaanaense Jones 1938 [synonym], Romaniceras toribioense Jones 1938 [synonym]
Diagnosis
No diagnoses are available
Measurements
| part | N | mean | minimum | maximum | median | s.d. | |
|---|---|---|---|---|---|---|---|
| shell height | 8 | 59.1 | 26.0 | 141.0 | 55.6 | 39.9 | |
| shell diameter | 8 | 140.7 | 62.5 | 345.0 | 127.5 | 103.6 | |
| shell inflation | 8 | 45.9 | 20.0 | 115.0 | 39.5 | 37.3 |
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| Source: o = order, c = class | |||||
| References: Kiessling 2003, Kiessling 2004 | |||||
Age range: base of the Cenomanian to the top of the Middle Turonian or 100.50000 to 89.30000 Ma
Collections (31 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Cenomanian | Mexico | Romaniceras mexicanum, Romaniceras adkinsi, Romaniceras santaanaense, Romaniceras toribioense, Romaniceras indiduraense (230856) | |
| Middle Turonian | Mexico (Coahuila de Zaragoza) | Romaniceras santaanaense (88676) | |
| Middle Turonian | USA (New Mexico) | Romaniceras mexicanum (77803 77808 171836 171837 178753 178759 178760 178761 178764 178765 178766 178770 178772 178773 178781 178782 178783 178784 178785 178786 178787 178788 178789) | |
| Middle Turonian | France | Romaniceras mexicanum (184520 184521) | |
| Middle Turonian | Mexico (Chihuahua) | Romaniceras mexicanum (38966 38968 38969 38970) |