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Amaurotoma leavenworthana
Taxonomy
Pleurotomaria leavenworthana was named by Hall (1856). It is a 3D body fossil. Its type locality is Spergen Hill, near railroad station at Harristown, southeast of Salem, which is in a Meramecian carbonate limestone in the Salem Formation of Indiana.
It was recombined as Cyclonema leavenworthana by Whitfield (1882), Hall (1883), Cummings and Beede (1906); it was recombined as Yunnania leavenworthana by Knight (1933), Knight and Bridge (1944), Thompson (1970); it was recombined as Amaurotoma leavenworthana by Yochelson and Saunders (1967), Wagner (2023).
It was recombined as Cyclonema leavenworthana by Whitfield (1882), Hall (1883), Cummings and Beede (1906); it was recombined as Yunnania leavenworthana by Knight (1933), Knight and Bridge (1944), Thompson (1970); it was recombined as Amaurotoma leavenworthana by Yochelson and Saunders (1967), Wagner (2023).
Synonymy list
| Year | Name and author |
|---|---|
| 1856 | Pleurotomaria leavenworthana Hall |
| 1882 | Cyclonema leavenworthana Whitfield pp. 75 - 76 figs. pl. 8 f. 29-31 |
| 1883 | Cyclonema leavenworthana Hall pp. 363 - 364 figs. pl. 31 f. 29-31 |
| 1906 | Cyclonema leavenworthana Cummings and Beede p. 1344 figs. pl. 25 f. 29-31 |
| 1933 | Yunnania leavenworthana Knight p. 39 |
| 1944 | Yunnania leavenworthana Knight and Bridge p. 451 figs. pl. 183 f. 7 |
| 1967 | Amaurotoma leavenworthana Yochelson and Saunders p. 26 |
| 1970 | Yunnania leavenworthana Thompson p. 261 |
| 2023 | Amaurotoma leavenworthana Wagner p. 3832 |
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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.
†Amaurotoma leavenworthana Hall 1856
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| J. Hall 1856 | Shell ranging in form from sub-globose to terete-conical and elongate-ovate; spire conical, varying greatly in its elevation from the young to the old shell; volutions five to seven, neatly rounded and ventricose below; suture well defined; aperture round-oval; umbilicus none; surface marked by conspicuous, rounded, revolving striae, which are less than the spaces between; strie less conspicuous on the base of the last volution; the first line below the suture uniformly thinner and sharper than the others, and the spaces on each side wider. Length from .05 to .50 of an inch. |
Measurements
No measurements are available
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| Source: f = family, superf = superfamily, c = class | |||||
| References: Kiessling 2004, Bandel et al. 2002, Bambach et al. 2007 | |||||
Age range: Meramecian or 342.90000 to 335.40000 Ma
Collections (5 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Meramecian | USA (Kentucky) | Yunnania leavenworthana (2713) | |
| Meramecian | USA (Indiana) | Cyclonema leavenworthana (129930) Pleurotomaria leavenworthana (type locality: 129910 129912) | |
| Meramecian | USA (Illinois) | Pleurotomaria leavenworthana (129929) |