| Amastra paulula | |
|---|---|
Scientific classification  | |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Mollusca |
| Class: | Gastropoda |
| Order: | Stylommatophora |
| Family: | Amastridae |
| Genus: | Amastra |
| Species: | A. paulula |
| Binomial name | |
| Amastra paulula C. M. Cooke, 1917 | |
| Synonyms | |
Amastra (Metamastra) paululaC. M. Cooke, 1917 alternative representation Contents | |
Amastra paulula is a species of air-breathing land snail, a terrestrial pulmonate gastropod mollusc in the family Amastridae. [1]
The length of the shell attains 9.8 mm, its diameter 5.4 mm.
(Original description) The shell is perforate, dextral, and ovate, appearing very light brown in its fossilized state. It is relatively thin, with the spire outlined in a convex manner and culminating in an obtuse summit.
The whorls of the protoconch increase rapidly in size. They are convex, and appear smooth, showing no discernible sculpture even under magnification. The subsequent whorls are convex and separated by a very shallow suture, with almost regular fine, thin growth wrinkles adorning their surface. The body whorl is large and rotund.
The aperture is oblique and broad, with a highly convex outer margin accented by a delicate lip rib. The columella is narrowly triangular and slightly oblique, featuring a concave inner margin and an erect, straight outer margin. The columellar fold is strong, nearly transverse, and terminates abruptly near the base of the columella and close to the outer margin.
The umbilicus is distinctly open and cleft-like, adding to the shell's delicate structure. [2]
Amastra forbesi is an extinct species of gastropod in the Amastridae family.
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Amastra davisiana is a species of air-breathing land snail, a terrestrial pulmonate gastropod mollusc in the family Amastridae.
Amastra spaldingi is a species of air-breathing land snail, a terrestrial pulmonate gastropod mollusc in the family Amastridae.
Amastra elephantina is a species of air-breathing land snail, a terrestrial pulmonate gastropod mollusc in the family Amastridae.
Amastra flemingi is an extinct species of air-breathing land snail, a terrestrial pulmonate gastropod mollusc in the family Amastridae.
Amastra fragosa is a species of air-breathing land snail, a terrestrial pulmonate gastropod mollusc in the family Amastridae.
Amastra gouveii is a species of air-breathing land snail, a terrestrial pulmonate gastropod mollusc in the family Amastridae.
Amastra hitchcocki is a species of air-breathing land snail, a terrestrial pulmonate gastropod mollusc in the family Amastridae.
Amastra juddii is a species of air-breathing land snail, a terrestrial pulmonate gastropod mollusc in the family Amastridae.
Amastra mirabilis is a species of air-breathing land snail, a terrestrial pulmonate gastropod mollusc in the family Amastridae.
Amastra modicella is a species of air-breathing land snail, a terrestrial pulmonate gastropod mollusc in the family Amastridae.
Amastra montivaga is a species of air-breathing land snail, a terrestrial pulmonate gastropod mollusc in the family Amastridae.
Amastra pagodula is a species of air-breathing land snail, a terrestrial pulmonate gastropod mollusc in the family Amastridae.
Amastra praeopima is a species of air-breathing land snail, a terrestrial pulmonate gastropod mollusc in the family Amastridae.
Amastra ricei is a species of air-breathing land snail, a terrestrial pulmonate gastropod mollusc in the family Amastridae.
Amastra spicula is a species of air-breathing land snail, a terrestrial pulmonate gastropod mollusc in the family Amastridae.
Amastra thurstoni is a species of air-breathing land snail, a terrestrial pulmonate gastropod mollusc in the family Amastridae.
Amastra viriosa is a species of air-breathing land snail, a terrestrial pulmonate gastropod mollusc in the family Amastridae.
Amastra whitei is a species of air-breathing land snail, a terrestrial pulmonate gastropod mollusc in the family Amastridae.
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