''Chalicopoma laevigatum'' is a
species
In biology, a species is the basic unit of classification and a taxonomic rank of an organism, as well as a unit of biodiversity. A species is often defined as the largest group of organisms in which any two individuals of the appropriate s ...
of minute
salt marsh
A salt marsh or saltmarsh, also known as a coastal salt marsh or a tidal marsh, is a coastal ecosystem in the upper coastal intertidal zone between land and open saltwater or brackish water that is regularly flooded by the tides. It is dominated ...
snail
A snail is, in loose terms, a shelled gastropod. The name is most often applied to land snails, terrestrial pulmonate gastropod molluscs. However, the common name ''snail'' is also used for most of the members of the molluscan class Gastro ...
with an
operculum, a
terrestrial gastropod
The gastropods (), commonly known as snails and slugs, belong to a large taxonomic class of invertebrates within the phylum Mollusca called Gastropoda ().
This class comprises snails and slugs from saltwater, from freshwater, and from land. T ...
mollusk
Mollusca is the second-largest phylum of invertebrate animals after the Arthropoda, the members of which are known as molluscs or mollusks (). Around 85,000 extant species of molluscs are recognized. The number of fossil species is e ...
, or
micromollusk
A micromollusk is a shelled mollusk which is extremely small, even at full adult size. The word is usually, but not exclusively, applied to marine mollusks, although in addition, numerous species of land snails and freshwater mollusks also ...
, in the family
Assimineidae
Assimineidae is a family of minute snails, also known as palmleaf snails, with an operculum, gastropod mollusks or micromollusks in the superfamily Rissoidae. Many of these very small snails live in intermediate habitats, being amphibious betwee ...
.
[MolluscaBase eds. (2021). MolluscaBase. Chalicopoma laevigatum (Quadras & Möllendorff, 1894). Accessed through: World Register of Marine Species at: http://www.marinespecies.org/aphia.php?p=taxdetails&id=1419408 on 2021-11-08]
This species is
endemic
Endemism is the state of a species being found in a single defined geographic location, such as an island, state, nation, country or other defined zone; organisms that are indigenous to a place are not endemic to it if they are also found elsew ...
to
Guam
Guam (; ch, Guåhan ) is an organized, unincorporated territory of the United States in the Micronesia subregion of the western Pacific Ocean. It is the westernmost point and territory of the United States (reckoned from the geographic cent ...
. According to The
Encyclopedia of World Problems and Human Potential, the Omphalotropis laevigata is an endangered species.
References
* Mollusc Specialist Group 1996.
Omphalotropis laevigata 2006 IUCN Red List of Threatened Species. Downloaded on 7 August 2007.
* The Encyclopedia of World Problems and Human Potential
Threatened species of Omphalotropis laevigata
External links
Quadras, J. F.; Möllendorf, O. F. von. (1894). Diagnoses specierum novarum a J. F. Quadras in insulis Mariannis collectarum. Nachrichtsblatt der Deutschen Malakozoologischen Gesellschaft. 26(1-2): 13-22, 33-42
Fauna of Guam
Assimineidae
Gastropods described in 1894
{{Assimineidae-stub