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Paupospira thebesensis
Taxonomy
Lophospira thebesensis was named by Savage (1913). It is a 3D body fossil. Its type locality is 2½ kilometers north of Thebes, which is in a Gamachian carbonate limestone in the Leemon Formation of Illinois.
It was recombined as Paupospira thebesensis by Wagner (2023).
It was recombined as Paupospira thebesensis by Wagner (2023).
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.
†Paupospira thebesensis Savage 1913
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| T. E. Savage 1913 | This species belongs to the Robusta section of Lophospira, as defined by Ulrich,30 and seems to be distantly related to L. lirata Ulrich, from the Cincinnatian beds of Ohio, which it somewhat resembles in size and in the larger surface features. It differs from that species in having only three or four volutions, which are more angular along the peripheral band than in that form. In our species the peripheral band is prominent and median in position. Upper slope of the volutions, between the band and the suture, divided near the middle by a low ridge on either side of which the surface is flattened or concave. A more distinct revolving ridge occurs about the same distance below the band. the intervening spaces also being flattened; suture moderately deep. aperture and umbilicus not well exposed. Transverse lines of growth fine and numerous. |