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Eusphairica distubula
Taxonomy
Eusphairica distubula was named by Hoare (2000). Its type specimen is CAS68400, a shell, and it is a 3D body fossil. Its type locality is USGS M1027 - 2 kilometers southeast of Parker Ranch, east fork of Scott River, which is in a Ludfordian carbonate limestone in the Gazelle Formation of California. It is the type species of Eusphairica.
Synonymy list
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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.
†Eusphairica distubula Hoare 2000
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| R. D. Hoare 2000 | Body subcircular in cross section: snout short: rostrum lacking: gape extending from just ventral of rostral opening to anterior end: posterior clefts present.
Body small, subcircular in cross section: dorsal portion of posterior face extending posteriorly, slanted ventrally, curving sharply just below rostral opening and slanting anteriorly; rostrum not present: dorsal margin straight beak slightly posterior to midlength; ventral margin of body straight. curving concavely into short snout: snout with keyhole gape anteriorly: ventral gape narrow, extending posteriorly to just ventral of rostral opening: body with marginal denticles in gape; area around rostral opening smooth or with nonpreserved ribs: central portion of face with five to six fine ribs: four coarser radial ribs at juncture of posterior face and body; 13 or more finer radial ribs on body; anterior portion of snout may lack radial ribs: comarginal growth lines present, ventrally on body and snout: internal features not observed. |