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Pleuronautilus gregarius
Taxonomy
Metacoceras gregarium was named by Miller (1945). Its type specimen is USNM 111614 and is a cast. Its type locality is USNM702a, Split Tank, Glass Mountains, which is in a Kungurian reef, buildup or bioherm limestone in the Cathedral Mountain Formation of Texas.
It was recombined as Foordiceras gregarium by Miller and Youngquist (1949); it was recombined as Pseudofoordiceras gregarium by Ruzhentsev and Shimanskiy (1954); it was recombined as Pleuronautilus gregarius by Shimanskiy (1967) and Ehiro (2022).
It was recombined as Foordiceras gregarium by Miller and Youngquist (1949); it was recombined as Pseudofoordiceras gregarium by Ruzhentsev and Shimanskiy (1954); it was recombined as Pleuronautilus gregarius by Shimanskiy (1967) and Ehiro (2022).
Sister species lacking formal opinion data
Synonymy list
| Year | Name and author |
|---|---|
| 1945 | Metacoceras gregarium Miller p. 286 figs. Pl 45, figs 5-8 |
| 1949 | Foordiceras gregarium Miller and Youngquist p. 98 figs. Pl 36, fig 5; pl 38, figs 5-8; pl 39, figs 1,2,6-9; pl 40, figs 1-4; pl 41, figs 5-9 |
| 1954 | Pseudofoordiceras gregarium Ruzhentsev and Shimanskiy p. 76 |
| 1967 | Pleuronautilus gregarius Shimanskiy p. 93 |
| 2022 | Pleuronautilus gregarius Ehiro p. 25 figs. 4.2-4.3 |
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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.
†Pleuronautilus gregarius Miller 1945
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Diagnosis
No diagnoses are available