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Royalella quadrolirata
Taxonomy
Donaldina quadroliratus was named by Anderson et al. (1990). Its type specimen is OSU 34991, a shell, and it is a 3D body fossil. Its type locality is Ty-3. 60 cm shale zone, immediately above limestone at mall abandoned borrow pi, which is in a Desmoinesian shallow subtidal limestone/shale in the Putnam Hill Formation of Ohio.
It was recombined as Royalella quadrolirata by Mazaev (2015).
It was recombined as Royalella quadrolirata by Mazaev (2015).
Synonymy list
| Year | Name and author |
|---|---|
| 1990 | Donaldina quadroliratus Anderson et al. pp. 560 - 561 figs. 1.1-1.4 |
| 2015 | Royalella quadrolirata Mazaev p. 891 |
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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.
†Royalella quadrolirata Anderson et al. 1990
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| J. R. Anderson et al. 1990 | Very high-spired shell, up to 13 whorls, with low spiral angle and low whorl expansion; four revolving lirae on each whorl, two bold lirae in middle of whorl, one faint lira on both upper and lower whorl surfaces.
Small, narrow, low spiral angle, high-spired shell; subrounded whorl profile; anomphalous, sutures shallowly impressed; protoconch of one whorl, smooth, heterostrophic; apical end of protoconch slightly upturned; aperture subcircular in shape; outer lip slightly thickened; inner lip slightly flared; shell composed of as many as 13 whorls, including protoconch. Teleoconch whorls have thick revolving lirae with deep interareas; first two whorls of teleoconch have faint ornamentation of two revolving lirae; later whorls have two pronounced lirae in middle of each whorl, flanked by two smaller lirae near sutures; growth lines faint. Whorl cross section circular to subcircular; three shell microstructural layers present; shell thickness ranges from 0.01 to 0.06 mm; slightly arcuate columella. Average measurements and size ranges given in Table 1. |
Measurements
No measurements are available
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| Source: c = class | |||||
| Reference: Kiessling 2004 | |||||
Age range: base of the Atokan to the top of the Missourian or 318.60000 to 303.70000 Ma
Collections (6 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Atokan | USA (Ohio) | Donaldina quadroliratus (183261) | |
| Desmoinesian | USA (Ohio) | Donaldina quadroliratus (71963 72004 79324 93081) | |
| Missourian | USA (Ohio) | Donaldina quadroliratus (79350) |