Notopala
Encyclopedia
Notopala is a genus
of large, freshwater snail
s with an operculum
, aquatic
gastropod mollusks in the family Viviparidae
, the river snails or mystery snails.
is dextral and globose-conic. The shell has up to five whorls
. The aperture
is subovate. The operculum
is corneous
.
The type species of the genus Notopala is Paludina hanleyi von Frauenfeld, 1864.
Genus
In biology, a genus is a low-level taxonomic rank used in the biological classification of living and fossil organisms, which is an example of definition by genus and differentia...
of large, freshwater snail
Freshwater snail
A freshwater snail is one kind of freshwater mollusc, the other kind being freshwater clams and mussels, i.e. freshwater bivalves. Specifically a freshwater snail is a gastropod that lives in a watery non-marine habitat. The majority of freshwater gastropods have a shell, with very few exceptions....
s with an operculum
Operculum (gastropod)
The operculum, meaning little lid, is a corneous or calcareous anatomical structure which exists in many groups of sea snails and freshwater snails, and also in a few groups of land snails...
, aquatic
Aquatic animal
An aquatic animal is an animal, either vertebrate or invertebrate, which lives in water for most or all of its life. It may breathe air or extract its oxygen from that dissolved in water through specialised organs called gills, or directly through its skin. Natural environments and the animals that...
gastropod mollusks in the family Viviparidae
Viviparidae
Viviparidae, sometimes known as the river snails or mystery snails, are a family of large operculate freshwater snails, aquatic gastropod mollusks....
, the river snails or mystery snails.
Description
The shellGastropod shell
The gastropod shell is a shell which is part of the body of a gastropod or snail, one kind of mollusc. The gastropod shell is an external skeleton or exoskeleton, which serves not only for muscle attachment, but also for protection from predators and from mechanical damage...
is dextral and globose-conic. The shell has up to five whorls
Whorl (mollusc)
A whorl is a single, complete 360° revolution or turn in the spiral growth of a mollusc shell. A spiral configuration of the shell is found in of numerous gastropods, but it is also found in shelled cephalopods including Nautilus, Spirula and the large extinct subclass of cephalopods known as the...
. The aperture
Aperture (mollusc)
The aperture is an opening in certain kinds of mollusc shells: it is the main opening of the shell, where part of the body of the animal emerges for locomotion, feeding, etc....
is subovate. The operculum
Operculum (gastropod)
The operculum, meaning little lid, is a corneous or calcareous anatomical structure which exists in many groups of sea snails and freshwater snails, and also in a few groups of land snails...
is corneous
Corneous
Corneous is a biological and medical term meaning horny, in other words made out of a substance similar to that of horns and hooves in some mammals....
.
Species
Species within the genus Notopala include:- † Notopala albascopularis (Etheridge, 1902) - synonym: Viviparus (?) albascopularis Etheridge, 1902 - from AptianAptianThe Aptian is an age in the geologic timescale or a stage in the stratigraphic column. It is a subdivision of the Early or Lower Cretaceous epoch or series and encompasses the time from 125.0 ± 1.0 Ma to 112.0 ± 1.0 Ma , approximately...
, Wallumbilla FormationWallumbilla FormationThe Wallumbilla Formation is a Lower Cretaceous geologic formation found in Australia. Plesiosaur remains are among the fossils that have been recovered from its strata....
, New South Wales - Notopala essiengionensis (Frauenfeld, 1862)
- Notopala sublineataNotopala sublineataNotopala sublineata is a species of large, freshwater snail with an operculum, an aquatic gastropod mollusk in the family Viviparidae, the river snails or mystery snails...
Conrad, 1850- Notopala sublineata sublineata Conrad, 1850
- Notopala sublineata alisoni (Brazier, 1979)
- Notopala sublineata hanleyi (Frauenfeld, 1864) / Notopala hanleyiNotopala hanleyiNotopala hanleyi is a species of large freshwater snail, an aquatic gastropod mollusk in the family Viviparidae. It is also classified as a subspecies Notopala sublineata hanleyi....
- † Notopala wanjacalda Cotton, 1935 - from upper Pleistocene near SunnysideSunnyside- Australia :*Sunnyside , house of Ellen G. White, co-founder of the Seventh-day Adventist Church- Canada :* Sunnyside, a suburban area of South Surrey, in turn a town centre of Surrey, British Columbia...
, South Australia - Notopala waterhousii (Adams & Angus, 1864)
The type species of the genus Notopala is Paludina hanleyi von Frauenfeld, 1864.
External links
- http://www.environment.gov.au/biodiversity/abrs/online-resources/fauna/afd/taxa/Notopala