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Rissoa (Turbonilla) gracilior
Taxonomy
Rissoa (Turbonilla) gracilior was named by M'Coy (1851). It is a 3D body fossil. Its type locality is Penylan Quarry, Pen-y-lan, which is in a Sheinwoodian carbonate mudstone in the Pen-y-lan Mudstone Formation of the United Kingdom. It is the type species of Holopella.
It was recombined as Chemnitzia gracilior by Lepsius (1878); it was recombined as Loxonema gracilior by Knight et al. (1960); it was recombined as Holopella gracilior by M'Coy (1851), Sandberger (1866), Ogilvie Gordon (1927) and Wagner (2023).
It was recombined as Chemnitzia gracilior by Lepsius (1878); it was recombined as Loxonema gracilior by Knight et al. (1960); it was recombined as Holopella gracilior by M'Coy (1851), Sandberger (1866), Ogilvie Gordon (1927) and Wagner (2023).
Sister species lacking formal opinion data
R. boucherti, R. hortensis, R. phagon, Turbonilla aragoni, Turbonilla atypha, Turbonilla berryi, Turbonilla leafensis, Turbonilla meta, Turbonilla neglecta, Turbonilla notata, Turbonilla obliquata, Turbonilla pseudocostellata, Turbonilla pusilla, Turbonilla raymondi, Turbonilla rufa, Turbonilla scalaroides, Turbonilla zesulcata, Turbonilla varicosa, Turbonilla miomutiniensis, Turbonilla woodburnei, Turbonilla aersispira, Turbonilla cooki, Turbonilla sabina, Turbonilla liraecostata, Turbonilla pseudoterebralis, Turbonilla thyne
Synonymy list
| Year | Name and author |
|---|---|
| 1851 | Holopella gracilior M'Coy |
| 1851 | Rissoa (Turbonilla) gracilior M'Coy |
| 1859 | Rissoa (Turbonilla) gracilior Schauroth |
| 1866 | Holopella gracilior Sandberger |
| 1878 | Chemnitzia gracilior Lepsius |
| 1927 | Holopella gracilior Ogilvie Gordon |
| 1960 | Loxonema gracilior Knight et al. p. 311 |
| 2023 | Holopella gracilior Wagner p. 1520 |
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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.
†Rissoa (Turbonilla) gracilior M'Coy 1851
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Diagnosis
No diagnoses are available
Measurements
No measurements are available
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| Source: f = family, c = class | |||||
| References: Hendy et al. 2009, Kiessling 2004 | |||||
Age range: Middle Triassic or 247.20000 to 237.00000 Ma
Collections: one only
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Middle Triassic | Germany (Sachsen-Anhalt) | Turbonilla gracilior (201970) |