| Theodoxus euxinus | |
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| A shell of Theodoxus euxinus | |
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| Subgenus: | Theodoxus [1] |
| Species: | T. euxinus |
| Binomial name | |
| Theodoxus euxinus | |
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Theodoxus euxinus is a species of small freshwater snail with a gill and an operculum, an aquatic gastropod mollusk in the family Neritidae, the nerites. [1] [3]
The distribution of this species includes:
The type locality is Dobrogea, Romania.
The shell is shiny, smooth, with a coarse white ziczac pattern. [3] The width of the shell is 6–8 mm. [3]
This species occurs in woodlands of the Danube Delta region, on rocks, and on sandy or muddy substrates. [3]
A siphon is an anatomical structure which is part of the body of aquatic molluscs in three classes: Gastropoda, Bivalvia and Cephalopoda.
The aperture is an opening in certain kinds of mollusc shells: it is the main opening of the shell, where the head-foot part of the body of the animal emerges for locomotion, feeding, etc.
Neritidae, common name the nerites, is a taxonomic family of small to medium-sized saltwater and freshwater snails which have a gill and a distinctive operculum.
Theodoxus danubialis is a species of small freshwater snail with an operculum, an aquatic gastropod mollusk in the family Neritidae, the nerites. The species is considered as endangered in Germany, Austria and in the Czech Republic.
The striped nerite, scientific name Theodoxus transversalis, is a species of small freshwater snail with an operculum, an aquatic gastropod mollusk in the family Neritidae, the nerites.
Theodoxus fluviatilis, common name the river nerite, is a species of small freshwater and brackish water snail with a gill and an operculum, an aquatic gastropod mollusk in the family Neritidae, the nerites.
Theodoxus maresi is a species of small freshwater snail with an operculum, an aquatic gastropod mollusk in the family Neritidae the nerites.
Theodoxus is a genus of nerites, small water snails with an operculum, some of which live in freshwater, and some in both freshwater and brackish water, aquatic gastropod mollusks in the family Neritidae, the nerites.
Theodoxus numidicus is a species of small freshwater snail with an operculum, an aquatic gastropod mollusk in the family Neritidae, the nerites.
Alinda biplicata, also known as Balea biplicata, common name the two lipped door snail or Thames door snail, is a species of air-breathing land snail, a terrestrial pulmonate gastropod mollusk in the family Clausiliidae, the door snails, all of which have a clausilium.
Theodoxus altenai is a species of freshwater snail with a gill and an operculum, an aquatic gastropod mollusk in the family Neritidae, the nerites.
Theodoxus meridionalis is a species of freshwater snail with a gill and an operculum. It is an aquatic gastropod mollusk in the family Neritidae, the nerites.
Theodoxus niloticus is a species of freshwater snail with a gill and an operculum. It is an aquatic gastropod mollusk in the family Neritidae, the nerites.
Pygope is an extinct genus of brachiopods belonging to the family Pygopidae. These brachiopods lived in open sea from the Jurassic Period, Kimmeridgian age up to Cretaceous Period, Barremian age. Some of the species are characterised by a smaller or larger perforation through the entire shell in older specimens, while others just have a depression somewhere on the midline. Younger specimens of the perforated species develop a heart-shape and subsequently both extensions merge, thus encircling a central passage which is in fact entirely outside the shell.
Theodoxus prevostianus is a species of small freshwater snail with an operculum, an aquatic gastropod mollusk in the family Neritidae, the nerites.
Theodoxus jordani is a species of freshwater snail with an operculum, an aquatic gastropod mollusk in the family Neritidae, the nerites.
Theodoxus anatolicus is a species of a freshwater snail with an operculum, an aquatic gastropod mollusk in the family Neritidae, the nerites.
Theodoxus valentinus is a species of freshwater gastropod in the nerite family, native to natural freshwater channels in Valencia, Spain. This species was believed extinct, but has recently been rediscovered to persist in small populations in three different sites.
This article incorporates public domain text from the reference [3]