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Columbocystis typica
Taxonomy
Columbocystis typica was named by Bassler (1950). Its type specimen is USNM 93407 and is a 3D body fossil. Its type locality is Rye Cove, which is in a Caradoc deep subtidal ramp packstone/mudstone in the Benbolt Formation of Virginia.
Synonymy list
| Year | Name and author |
|---|---|
| 1950 | Columbocystis typica Bassler pp. 277 - 278 figs. 1-2 |
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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.
†Columbocystis typica Bassler 1950
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| R. S. Bassler 1950 | Theca oval, with a conspicuous flattened protuberance at the top; height 24 mm, width 18 mm. Anterior outline distinctly gibbous along its upper third, while the posterior presents its strongest convexity at midheight. From a lateral point of view the major axis of the theca appears oblique, extending from the upper anterior toward the lower posterior thecal border, and the upper flattened face of the food-groove platform slopes in the same general direction. The platform, 8 mm in width and 6.5 mm long from front to rear, consists of five plates 2.5 to 3 mm in height extending laterally beyond the upper margins of the supporting thecal plates. These plates form an elevation about 2 mm in height and (i mm in diameter immediately beneath the platform. |