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Taxonomy
Byssoarca protracta was named by Conrad (1848) [DISTRIBUTION: Early Oligocene; Gulf Coastal Plain.]. Its type specimen is ANSP 30649, a shell, and it is a 3D body fossil. Its type locality is Vicksburg, which is in a Rupelian marine marl in the Byram Marl Formation of Mississippi.
It was recombined as Navicula protracta by Conrad (1854); it was recombined as Arca protracta by Conrad (1865).
It was recombined as Navicula protracta by Conrad (1854); it was recombined as Arca protracta by Conrad (1865).
Sister species lacking formal opinion data
A. bellonii, A. bravoensis, A. cancellata, A. carinata, A. gurgitis, A. limatella, A. macnairyensis, A. montensis, A. nana, A. pakistanica, A. pergracilis, A. securiculata, A. tailleburgensis, A. triasina, A. halmyrus, A. montensis, A. fruthi, A. stillicidum, A. mikkula, A. waltonia, A. fracta, A. gabrielis, A. veatchi
Synonymy list
| Year | Name and author |
|---|---|
| 1848 | Byssoarca protracta Conrad p. 294 |
| 1854 | Navicula protracta Conrad p. 29 |
| 1865 | Arca protracta Conrad p. 11 |
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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.
†Arca protracta Conrad 1848
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Diagnosis
No diagnoses are available