Laevistrombus
A genus of true conchs with a debated taxonomic history.
Laevistrombus is a genus of sea snails, marine gastropod mollusks belonging to the family Strombidae, the true conchs. The genus contains both living and extinct species.
The name Laevistrombus first appeared in 1955, when Tetsuaki Kira used it as a subgenus of Strombus in the third printing of the first edition of *Coloured Illustrations of the Shells of Japan*. It originally included two species: *Strombus (Laevistrombus) canarium* and *Strombus (L.) isabella*. Kira did not designate a type specimen, nor did he provide a formal description or statement of differentiation, which the ICZN code requires to validate a name. In a later version of the same book, Laevistrombus was raised to genus level, but still lacked a description. Rüdiger Bieler and Richard Petit (1996) considered it a nomen nudum, and authorship was transferred to Robert Tucker Abbott (1960), who supplied a proper description, illustrations, and designated *Strombus canarium* as the type species in the first volume of his monograph *Indo-Pacific Mollusca*. The currently accepted classification, proposed by Sepkoski in 2002, elevated Laevistrombus to genus level based on palaeontological evidence.
Living species in the genus include *Laevistrombus canarium*, *Laevistrombus guidoi*, *Laevistrombus liveranii*, and *Laevistrombus maxwelli*. A fossil species, *Laevistrombus denticostatus*, is also recognized. Three former members—*Laevistrombus taeniatus*, *Laevistrombus turturella*, and *Laevistrombus vanikorensis*—are now considered synonyms of species in the genus *Dolomena*.
Quick Facts
- Taxon
- Laevistrombus
- Type Species
- Strombus canarium
- Type Species Authority
- Linnaeus, 1758
Facts from the source article.
Lore & Background
The taxon Laevistrombus was introduced in the literature as a subgenus of Strombus by Tetsuaki Kira in 1955. It originally comprised two species, Strombus (Laevistrombus) canarium and Strombus (L.) isabella. No type specimen was designated, and Kira gave no formal description or statement of differentiation, as required by the ICZN code to validate the name. In a later version of the book, Laevistrombus was elevated to genus level, but a description was still lacking. Rüdiger Bieler and Richard Petit considered it a nomen nudum, and the authorship was transferred to Robert Tucker Abbott, who had provided a proper description and illustrations of Laevistrombus and specified a type species, Strombus canarium L., in the first volume of his monograph Indo-Pacific Mollusca. The currently accepted classification was proposed by Sepkoski, who elevated Laevistrombus to genus level based on palaeontological data.
Reader's Guide
The significance of Laevistrombus lies in its contested taxonomic history and its recognition as a distinct genus within the Strombidae. The initial proposal by Tetsuaki Kira in 1955 lacked the formal description required by the ICZN code, leading to its status as a nomen nudum. The name was later validated by Robert Tucker Abbott in 1960, who provided proper description, illustrations, and a designated type species. The subsequent elevation to genus level by Sepkoski in 2002, based on palaeontological data, established the currently accepted classification. Living species within the genus include Laevistrombus canarium, Laevistrombus guidoi, Laevistrombus liveranii, and Laevistrombus maxwelli, as well as the fossil species Laevistrombus denticostatus. Several former members of the genus have been reassigned to the genus Dolomena, including Laevistrombus taeniatus, Laevistrombus turturella, and Laevistrombus vanikorensis. The genus continues to be studied, with recent additions such as Laevistrombus liveranii described in 2021 and Laevistrombus maxwelli in 2022.
Did You Know?
- The name was considered a nomen nudum until Robert Tucker Abbott validated it in 1960.
- Three former Laevistrombus species are now placed in the genus Dolomena.
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