# Zebinella recticostulata

Zebinella recticostulata is an extinct species of minute sea snail, a marine gastropod mollusk or micromollusk in the family Rissoinidae. The marine gastropod Zebinella recticostulata, first described by Cossmann and Peyrot in 1919, belongs to the family Rissoinidae within the class Gastropoda. This species is known for its small, elongated shell structure, typical of the Rissoinidae, and features distinct ribbed patterns along its shell, which aid in distinguishing it from related species.

## Description

The length of the shell attains 6 mm, its diameter 2.25 mm. Zebinella recticostulata is a marine gastropod mollusk classified in the family Rissoinidae, which is part of the larger class Gastropoda. This species was first described by Cossmann and Peyrot in 1919, highlighting the rich taxonomic history associated with this group of marine snails. The genus Zebinella includes several species known for their distinctive shell morphology, which plays a crucial role in their classification. Within the family Rissoinidae, Zebinella recticostulata shares characteristics typical of its relatives, such as a coiled, elongated shell structure and a specific pattern of ribbing and ornamentation. The family is notable for its high species diversity and is predominantly found in shallow marine habitats, indicating the ecological success and adaptability of these gastropods.
The shell of Zebinella recticostulata is characterized by its elongated shape, reaching a length of up to 6 mm. It features distinct axial and spiral ribbing, giving it a visually striking appearance. The shell color ranges from light cream to whitish, often with darker bands or spots that enhance its camouflage against the seabed. The aperture of the shell is elongated and narrow, which is typical for species in the Rissoinidae family and reflects adaptations for their specific feeding strategies. In terms of anatomy, like other gastropods, Zebinella recticostulata possesses a radula, a specialized feeding organ that functions similarly to a tongue, allowing it to scrape food particles off surfaces. This morphological adaptation enables it to efficiently consume detritus and microorganisms found in its benthic habitat.

## Distribution

Fossils of this species were found in Neogene strata in Pyrénées-Atlantiques, France. Zebinella recticostulata is primarily distributed in the warm, shallow waters of the Indo-Pacific region, particularly around tropical islands such as those in the Coral Triangle. This region is known for its rich biodiversity and variety of marine ecosystems. The species inhabits sandy or muddy substrates, often at depths ranging from 0 to 50 meters, making it a common resident of coastal marine environment. The habitat of Zebinella recticostulata is crucial for its survival, as it provides access to a steady supply of detritus and organic matter, which forms the basis of its diet. These environments are also critical for the overall health of marine ecosystems, as they support a diverse array of marine life, including other mollusks, crustaceans, and fish species.

### Ecological Role

As a detritivore, Zebinella recticostulata plays an essential role in its ecosystem by helping to decompose organic material and recycle nutrients back into the marine environment. This feeding behavior is vital for maintaining the health of benthic ecosystems, as it facilitates the breakdown of dead organic matter, which can be utilized by other organisms in the food web. The species also contributes to the overall biodiversity of its habitat. By feeding on detritus and microorganisms, it helps control the populations of these organisms, which can impact nutrient cycling and energy flow within the ecosystem. Studies have shown that such detritivorous snails are key indicators of environmental health and play a crucial role in stabilizing sediment in marine ecosystems.

### Conservation Status

The conservation status of Zebinella recticostulata has not been formally assessed by organizations such as the IUCN. However, like many marine gastropods, it may be vulnerable to threats from habitat degradation, pollution, and climate change. Coastal development, overfishing, and pollution from agricultural runoff can significantly impact its habitat, leading to potential declines in population,