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Paracerithium
Taxonomy
Paracerithium was named by Cossmann (1902) [Sepkoski's age data: Tr Ladi J Tith Sepkoski's reference number: 558,797].
It was assigned to Neotaenioglossa by Sepkoski (2002); and to Paracerithiinae by Bandel (2006).
It was assigned to Neotaenioglossa by Sepkoski (2002); and to Paracerithiinae by Bandel (2006).
Species
Species lacking formal opinion data
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.
G. †Paracerithium Cossmann 1902
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†Paracerithium porrectum Haas 1953
†Paracerithium tambosolense Haas 1953
†Paracerithium turritellare Haas 1953
†Paracerithium vixstriatum Haas 1953
Diagnosis
Reference | Diagnosis | |
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K. Bandel 2006 | The protoconch of Paracerithium COSSMANN, 1902 has three spiral lines on the larval shell. The subsutural row of dots and the spiral ribs on the larval shell resembles that of Argyropeza but the protoconch may be larger. The subfamily is based on the genus Paracerithium from the Jurassic. The teleoconch is characterized by an aperture with anterior notch, conical shell shape and ornament with one or two strong spiral ribs creating a keeled appearance. Smaller spiral lines cover the whorl flanks as well as the base. The few widely spaced axial ribs continue from the suture to the spiral keels on the median whorl, forming nodules with them where they cross. |