Anaspidesidae is a
family
Family (from ) is a Social group, group of people related either by consanguinity (by recognized birth) or Affinity (law), affinity (by marriage or other relationship). It forms the basis for social order. Ideally, families offer predictabili ...
of freshwater
crustacean
Crustaceans (from Latin meaning: "those with shells" or "crusted ones") are invertebrate animals that constitute one group of arthropods that are traditionally a part of the subphylum Crustacea (), a large, diverse group of mainly aquatic arthrop ...
that is endemic to
Tasmania
Tasmania (; palawa kani: ''Lutruwita'') is an island States and territories of Australia, state of Australia. It is located to the south of the Mainland Australia, Australian mainland, and is separated from it by the Bass Strait. The sta ...
,
Australia
Australia, officially the Commonwealth of Australia, is a country comprising mainland Australia, the mainland of the Australia (continent), Australian continent, the island of Tasmania and list of islands of Australia, numerous smaller isl ...
.
The family contains 3 living
genera
Genus (; : genera ) is a taxonomic rank above species and below family as used in the biological classification of living and fossil organisms as well as viruses. In binomial nomenclature, the genus name forms the first part of the binomial s ...
. This group of crustaceans are considered
living fossil
A living fossil is a Deprecation, deprecated term for an extant taxon that phenotypically resembles related species known only from the fossil record. To be considered a living fossil, the fossil species must be old relative to the time of or ...
s.
They are commonly and collectively known as the Tasmanian anaspid crustaceans.
This family is originally called as Anaspididae. However, genus name ''Anaspis'' was preoccupied by the insect genus, ''Anaspis'' Geoffroy, 1762,
and therefore, in 2017, the family was renamed to Anaspidesidae by
Shane Ahyong and
Miguel A. Alonso-Zarazaga.
Anaspiesids have stalked eyes, long antennae and
antennules, and a slender body with no carapace. The two species of ''Allanaspides'' and the single species of ''Paranaspides'' are all listed as
vulnerable on the
IUCN Red List
The International Union for Conservation of Nature (IUCN) Red List of Threatened Species, also known as the IUCN Red List or Red Data Book, founded in 1964, is an inventory of the global conservation status and extinction risk of biological ...
.
Taxonomy
After Höpel ''et al.'' (2023)
*''Allanaspides''
Swain, Wilson, Hickman & Ong, 1970
**''
Allanaspides hickmani''
Swain, Wilson & Ong, 1970 – commonly known as Hickman's pygmy mountain shrimp
**''
Allanaspides helonomus''
Swain, Wilson, Hickman & Ong, 1970
*''
Anaspides''
Thomson, 1894
**''
Anaspides tasmaniae''
Thomson, 1892
**''
Anaspides spinulae''
Williams, 1965
**''
Anaspides jarmani''
Ahyong, 2015
**''
Anaspides clarkei''
Ahyong, 2015
**''
Anaspides swaini''
Ahyong, 2015
**''
Anaspides driesseni''
Höpel, Richter & Ahyong, 2023
**''
Anaspides richardsoni''
Ahyong, 2016
**''
Anaspides eberhardi''
Ahyong, 2016
*''Paranaspides''
Smith, 1908
**''
Paranaspides lacustris''
Smith, 1909
**''
Paranaspides williamsi
Anaspidesidae is a family (biology), family of freshwater crustacean that is endemic to Tasmania, Australia. The family contains 3 living genus, genera. This group of crustaceans are considered living fossils. They are commonly and collectively k ...
''
Ahyong, Schwentner & Richter, 2017
*''
Anaspidites''
Brooks, 1962 (
Hawkesbury sandstone
Sydney sandstone, also known as the Hawkesbury sandstone, yellowblock, and yellow gold, is a sedimentary rock named after Sydney, and the Hawkesbury River north of Sydney, where this sandstone is particularly common.
It forms the bedrock f ...
,
Triassic
The Triassic ( ; sometimes symbolized 🝈) is a geologic period and system which spans 50.5 million years from the end of the Permian Period 251.902 million years ago ( Mya), to the beginning of the Jurassic Period 201.4 Mya. The Triassic is t ...
)
**''Anaspidites antiquus''
(Chilton, 1929)
*''
Koonaspides''
Jell & Duncan, 1986 (
Koonwarra fossil bed,
Aptian
The Aptian is an age (geology), age in the geologic timescale or a stage (stratigraphy), stage in the stratigraphic column. It is a subdivision of the Early Cretaceous, Early or Lower Cretaceous epoch (geology), Epoch or series (stratigraphy), S ...
,
Early Cretaceous
The Early Cretaceous (geochronology, geochronological name) or the Lower Cretaceous (chronostratigraphy, chronostratigraphic name) is the earlier or lower of the two major divisions of the Cretaceous. It is usually considered to stretch from 143.1 ...
)
**''Koonaspides indistinctus''
Jell & Duncan, 1986
References
Crustaceans of Australia
Syncarida
Malacostraca families
{{Malacostraca-stub