Paraliroceras Barskov & Shilovsky, 2014
publication ID |
https://doi.org/10.5852/ejt.2025.1019.3071 |
publication LSID |
lsid:zoobank.org:pub:E24EBF4A-9FE2-47E4-A656-E1698F88BB41 |
DOI |
https://doi.org/10.5281/zenodo.17227791 |
persistent identifier |
https://treatment.plazi.org/id/03E487D4-FFEC-4937-FE55-5A19817FF919 |
treatment provided by |
Plazi |
scientific name |
Paraliroceras Barskov & Shilovsky |
status |
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Genus Paraliroceras Barskov & Shilovsky in Barskov et al., 2014
Type species
Paraliroceras kazanicum Barskov & Shilovsky in Barskov et al., 2014; original designation.
Diagnosis
Genus of the family Liroceratidae with pachyconic, subinvolute conch. The conch is rapidly increasing in height with a high coiling rate (WER = 2.30–2.90). Whorls moderately embracing, whorl profile reniform; umbilical margin pronounced, narrowly rounded. Adult ornament with fine growth lines with a fairly deep ventral sinus. Septa without inflexions, slightly concave. Suture line simple, nearly straight to straight with a shallow, broadly rounded internal lobe. The siphuncle has a position between the centre of the septum and the venter.
Included species
Western Russia ( Barskov et al. 2014): Paraliroceras kazanicum Barskov & Shilovsky in Barskov et al., 2014, Roadian.
Central Iran (this paper): Paraliroceras macrogaster sp. nov., Wuchiapingian.
Remarks
Paraliroceras is similar to Liroceras and differs mainly in the pronounced umbilical margin, which is narrowly rounded in Paraliroceras but usually broad and evenly rounded in Liroceras . The species of Paraliroceras are more widely umbilicate than most known species of Liroceras .
No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.
Kingdom |
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Phylum |
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Class |
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SubClass |
Nautiloidea |
Order |
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SubOrder |
Liroceratina |
SuperFamily |
Liroceratoidea |
Family |