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Placenticeras bidorsatum
Taxonomy
Ammonites bidorsatus was named by Roemer (1841).
It was recombined as Placenticeras bidorsatum by Kennedy (1986) and Kennedy and Kaplan (1995).
It was recombined as Placenticeras bidorsatum by Kennedy (1986) and Kennedy and Kaplan (1995).
Sister species lacking formal opinion data
Synonyms
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Synonymy list
Year | Name and author |
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1841 | Ammonites bidorsatus Roemer p. 88 figs. Pl 13, fig 5 |
1867 | Ammonites dujardin Schluter p. 25 figs. Pl 4, figs 1,2 |
1903 | Diplacomoceras canaliculatum Hyatt p. 243 |
1986 | Placenticeras bidorsatum Kennedy p. 56 figs. Pl 8, figs 1-12; pl 14, figs 8,9; text-figs 20-23 |
1995 | Placenticeras bidorsatum Kennedy and Kaplan p. 28 figs. Pl 13, figs 1-3; pl 14, figs 1-3; pl 15, figs 1-5; pl 16, figs 1-5; pl 17, figs 1-3; pl 18, figs 1-3 |
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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.
†Placenticeras bidorsatum Roemer 1841
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Invalid names: Ammonites dujardin Schluter 1867 [synonym], Diplacomoceras canaliculatum Hyatt 1903 [synonym]
Diagnosis
No diagnoses are available