Paciocinebrina
A genus of marine gastropod mollusks in the murex snail family.
Paciocinebrina is a genus of marine gastropod mollusks belonging to the family Muricidae, commonly known as murex snails or rock snails. These are sea snails. The genus includes a number of accepted species, as listed by the World Register of Marine Species. Among them are *Paciocinebrina atropurpurea*, *Paciocinebrina barbarensis*, *Paciocinebrina benitoensis*, *Paciocinebrina bormannae*, *Paciocinebrina circumtexta*, *Paciocinebrina crispatissima*, *Paciocinebrina foveolata*, *Paciocinebrina fraseri*, *Paciocinebrina gracillima*, *Paciocinebrina grandilurida*, *Paciocinebrina grippi*, *Paciocinebrina interfossa*, *Paciocinebrina lurida*, *Paciocinebrina macleani*, *Paciocinebrina mininterfossa*, *Paciocinebrina minor*, *Paciocinebrina munda*, *Paciocinebrina murphyorum*, *Paciocinebrina neobarbarensis*, *Paciocinebrina pseudomunda*, *Paciocinebrina pseudopusilla*, *Paciocinebrina pusilla*, *Paciocinebrina sclera*, *Paciocinebrina seftoni*, the extinct †*Paciocinebrina squamulifera*, and *Paciocinebrina thelmacrowae*. These species are primarily distributed in the Northeast Pacific.
Quick Facts
- Taxon
- Paciocinebrina
- Type Species
- Tritonium luridum / Middendorff, 1848
Facts from the source article.
Lore & Background
The genus Paciocinebrina was established within the family Muricidae, encompassing a variety of sea snails that inhabit marine environments. Species within this genus have been described over a broad period, with the earliest recognized species, Paciocinebrina foveolata, described in 1844, and the most recent additions, such as Paciocinebrina bormannae, described in 2020. The genus includes both extant and extinct species, with one fossil species, †Paciocinebrina squamulifera, noted from 1869. Many species were originally described under other genera before being reassigned to Paciocinebrina, reflecting ongoing taxonomic revisions. The species are distributed across the Northeast Pacific, with names often referencing geographic locations (e.g., Paciocinebrina barbarensis, Paciocinebrina benitoensis) or notable individuals (e.g., Paciocinebrina bormannae, Paciocinebrina murphyorum).
Reader's Guide
The genus Paciocinebrina represents a significant component of the muricid fauna in the Northeast Pacific, with its species contributing to the ecological diversity of marine gastropods. The taxonomic history of the genus, as documented in works such as Houart, Vermeij & Wiedrick (2019), has clarified relationships among species and introduced new taxa, including Paciocinebrina benitoensis, Paciocinebrina macleani, and Paciocinebrina neobarbarensis. The genus includes species with varied morphological traits, such as Paciocinebrina atropurpurea and Paciocinebrina lurida, which have been known for over a century. The recognition of multiple new species in 2019 and 2020 indicates ongoing research and refinement of the genus's boundaries. The inclusion of a fossil species, †Paciocinebrina squamulifera, highlights the genus's deep temporal presence. The genus's legacy lies in its role as a subject of systematic study, illustrating the complexity of muricid taxonomy and the importance of the Northeast Pacific as a region of high gastropod diversity.
Did You Know?
- Paciocinebrina includes 26 accepted species according to the World Register of Marine Species.
- The genus contains one fossil species, †Paciocinebrina squamulifera, described in 1869.
- Several species were newly described in 2019 and 2020, including Paciocinebrina benitoensis and Paciocinebrina bormannae.
- The species Paciocinebrina foveolata was the earliest described, in 1844.
Frequently Asked Questions
What is Paciocinebrina?
Paciocinebrina is a genus of marine sea snails classified within the murex snail family, Muricidae. It groups together a set of related gastropod mollusk species that share common morphological traits typical of rock snails.
How many species belong to the genus Paciocinebrina?
The World Register of Marine Species currently recognizes 26 accepted species under this genus. These range from well-known names like *P. atropurpurea* and *P. fraseri* to lesser-known entries such as *P. benitoensis*.
Which Paciocinebrina species was described first?
The earliest species formally named in the genus is *Paciocinebrina foveolata*, originally described by Hinds in 1844. That makes it the oldest recognized member of the group by more than a century and a half.
What is the most recently described Paciocinebrina species?
*Paciocinebrina bormannae*, named by Wiedrick and Houart in 2020, is the newest addition to the genus. Its description shows that taxonomic work on murex snails is still actively producing new species even today.
Why do shell collectors and malacologists care about Paciocinebrina?
As a 26-species genus within Muricidae, it represents a rich and still-growing diversity of shell forms that fans and researchers track for identification, distribution, and evolutionary relationships. The ongoing addition of new species, like *P. bormannae*, keeps the group relevant in modern marine invertebrate research.
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