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Cotteswoldia mactra
Taxonomy
Ammonites mactra was named by Dumortier (1874).
It was recombined as Pleydellia mactra by Rulleau (1995); it was recombined as Cotteswoldia mactra by Schulbert (2001).
It was recombined as Pleydellia mactra by Rulleau (1995); it was recombined as Cotteswoldia mactra by Schulbert (2001).
Sister species lacking formal opinion data
C. aalensis, C. aalensis, C. aalensis, C. aalensis, C. arcuata, C. attrita, C. bifax, C. burtonensis, C. costulata, C. costullata, C. crinita, C. egena, C. hinsbergi, C. limatula, C. pau, C. paucicostata, C. sourensis, C. subcandida, C. tenuicostata, Pleydellia attrita, Pleydellia bifax, Pleydellia egena, Pleydellia fuselieri, Pleydellia paucicosta, Pleydellia paucicostata, Pleydellia subcompacta
Synonymy list
| Year | Name and author |
|---|---|
| 1874 | Ammonites mactra Dumortier |
| 1995 | Pleydellia mactra Rulleau |
| 2001 | Cotteswoldia mactra Schulbert p. 83 figs. Pl 9, figs 14,15; pl 25, fig 1 |
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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.
†Cotteswoldia mactra Dumortier 1874
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Diagnosis
No diagnoses are available
Measurements
| part | N | mean | minimum | maximum | median | s.d. | |
|---|---|---|---|---|---|---|---|
| height | 3 | 15.3 | 13.0 | 18.0 | 15.5 | 3.54 | |
| diameter | 3 | 34.6 | 30.0 | 46.0 | 30.0 | 9.24 | |
| inflation | 3 | 11.6 | 9.00 | 15.0 | 12.0 | 4.24 |
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| Source: o = order, c = class | |||||
| References: Kiessling 2003, Kiessling 2004 | |||||
Age range: Late/Upper Toarcian or 180.40000 to 174.70000 Ma
Collections (33 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Toarcian | Germany (Bavaria) | Cotteswoldia mactra (51810 51811 51818 51819 51820 51821 51822 51823) | |
| Toarcian | France | Pleydellia mactra (210824 210885) | |
| Late/Upper Toarcian | Bulgaria | Pleydellia mactra (151027) | |
| Late/Upper Toarcian | Spain (Granada) | Pleydellia mactra (201308 201345 201352) | |
| Late/Upper Toarcian | Spain (Murcia) | Pleydellia mactra (201649 201650 201651) | |
| Late/Upper Toarcian | Germany | Cotteswoldia mactra (59435 59436 59437) | |
| Late/Upper Toarcian | France (Deux-Sevrès) | Pleydellia mactra (147145 147194) | |
| Late/Upper Toarcian | Italy (Sicily) | Pleydellia mactra (151228) | |
| Late/Upper Toarcian | Spain | Pleydellia mactra (131825 147126 147127 147128 147130 147131 147132) | |
| Late/Upper Toarcian | France | Pleydellia mactra (148816 148817 161689) |