| Anisancylus dutrae | |
|---|---|
Scientific classification  | |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Mollusca |
| Class: | Gastropoda |
| Subclass: | Heterobranchia |
| Superorder: | Hygrophila |
| Family: | Planorbidae |
| Genus: | Anisancylus |
| Species: | A. dutrae |
| Binomial name | |
| Anisancylus dutrae (Santos, 1994) | |
| Synonyms | |
| |
Anisancylus dutrae is a species of small, freshwater, air-breathing limpet, an aquatic pulmonate gastropod mollusc in the family Planorbidae, the ram's horn snails and their allies.
The species name honours Dr. Ana Virginea C. Dutra of the Federal University of Pernambuco. [2]
A. dutrae is endemic to Brazil, where it occurs in the northeastern states of Pernambuco and Bahia. [1] [3] The species' type locality is the Tapacurá Ecological Station in São Lourenço da Mata, Pernambuco. [3]
A. dutrae has a high shell with an oval aperture, reaching 5 millimetres (0.20 in) in length. The apex is prominent, not pointed, dorsally flattened, bent to the right and back. The protoconch shows an apical depression and a small flat area, followed by irregularly arranged punctuations. The radial lines are imperceptible to optical microscopy. The teleoconch shows prominent radial lines across the surface of the shell and concentric, wavy fine lines. The mantle is pigmented, generally dark brown or black, except in the areas of muscle insertion (foot and tentacles). The right anterior muscle impression is elongated, extending to the midline of the body, with a median constriction. The left impression is elliptical, transversely arranged. The posterior impression is elliptical. [2] [3]
The radula shows marked characteristics. There is a quadricuspid rachidian tooth, the two main cusps being asymmetrical and aculeate. Beside each principal cusp there is one small accessory cusp. There are three principal cusps in the lateral teeth. The mesocone is the most developed, long and aculeate, while the endocone is relatively short. There is a big gap between the mesocone and the ectocone. [2] [3]
The ovotestis is wide, having about 35 unbranched, closely pressed follicles. The prostate has 4-5 follicles. [2] [3]
A. dutrae is found attached to the upper surface of stones in lotic habitats (such as small, fast-flowing streams). [2]
The Scotch bonnet is a medium-sized to large species of sea snail, a marine gastropod mollusk in the subfamily Cassinae, the helmet shells and bonnet shells. The common name "Scotch bonnet" alludes to the general outline and color pattern of the shell, which vaguely resemble a tam o' shanter, a traditional Scottish bonnet or cap. The shell is egg-shaped and fairly large, 2 to 4 inches in maximum dimension, with a regular pattern of yellow, orange or brown squarish spots. The surface sculpture of the shell is highly variable: the surface can be smooth and polished, have grooves, be granulated, or even be nodulose on the shoulder of the whorls.
Paryphanta busbyi is a species of large predatory land snail, a terrestrial pulmonate gastropod mollusk in the family Rhytididae.
Latia neritoides is a species of small freshwater snail or limpet, an aquatic gastropod mollusc in the family Latiidae.
Amphigyra is a genus of air-breathing freshwater snail, an aquatic pulmonate gastropod mollusk in the family Planorbidae, the ram's horn snails.
Neoplanorbis tantillus is a species of very small air-breathing freshwater snail, an aquatic gastropod mollusk in the family Planorbidae, the ram's horn snails. This species is endemic to the United States. In 2012, it has been declared extinct by the IUCN Red List of Threatened Species.
Brasilodon is an extinct genus of small, mammal-like cynodonts that lived in what is now Brazil during the Norian age of the Late Triassic epoch, about 225.42 million years ago. While no complete skeletons have been found, the length of Brasilodon has been estimated at 12 centimetres (4.7 in). Its dentition shows that it was most likely an insectivore. The genus is monotypic, containing only the species B. quadrangularis. Brasilodon belongs to the family Brasilodontidae, whose members were some of the closest relatives of mammals, the only cynodonts alive today. Two other brasilodontid genera, Brasilitherium and Minicynodon, are now considered to be junior synonyms of Brasilodon.
Indrella is a monotypic genus containing the single species Indrella ampulla, a tropical terrestrial air-breathing gastropod mollusk in the family Ariophantidae. It is endemic to the Western Ghats of India.
Voluta ebraea, common name the Hebrew volute, is a species of medium-sized sea snail, a marine gastropod mollusk in the family Volutidae, the volutes. The Hebrew volute is endemic to Brazil, where it is collected both for food and for its shell, which is highly desired for ornamental purposes. Recent studies indicate that natural populations of Voluta ebraea may be suffering declines due to overfishing and overexploitation.
Leptacme cuongi is a species of air-breathing land snail, a terrestrial gastropod mollusk in the family Clausiliidae, the door snails.
Uncancylus is a genus of small, freshwater, air-breathing limpets, aquatic pulmonate gastropod molluscs in the family Planorbidae, the ram's horn snails and their allies.
Uncancylus concentricus is a species of small, freshwater, air-breathing limpet, an aquatic pulmonate gastropod mollusc in the family Planorbidae, the ram's horn snails and their allies.
Anisancylus is a genus of small, freshwater, air-breathing limpets, aquatic pulmonate gastropod molluscs in the family Planorbidae, the ram's horn snails and their allies.
Anisancylus obliquus is a species of small, freshwater, air-breathing limpet, an aquatic pulmonate gastropod mollusc in the family Planorbidae, the ram's horn snails and their allies.
Uncancylus foncki is a species of small, freshwater, air-breathing limpet, an aquatic pulmonate gastropod mollusc in the family Planorbidae, the ram's horn snails and their allies.
Burnupia ingae is a species of minute freshwater snail or limpet, an aquatic gastropod mollusc or micromollusk that is traditionally placed in the family Planorbidae, the ram's horn snails and their allies.
Hebetancylus is a genus of small, freshwater, air-breathing limpets, aquatic pulmonate gastropod molluscs in the family Planorbidae, the ram's horn snails and their allies.
Hebetancylus moricandi is a species of small, freshwater, air-breathing limpet, an aquatic pulmonate gastropod mollusc in the family Planorbidae, the ram's horn snails and their allies.
Laevapex is a genus of small, freshwater, air-breathing limpets, aquatic pulmonate gastropod molluscs in the family Planorbidae, the ram's horn snails and their allies.
Laevapex vazi is a species of small, freshwater, air-breathing limpet, an aquatic pulmonate gastropod mollusc or micromollusc in the family Planorbidae, the ram's horn snails and their allies.
Heterocithara tribulationis is a species of sea snail, a marine gastropod mollusk in the family Mangeliidae.
