Reymondia pyramidalis | |
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Scientific classification ![]() | |
Kingdom: | Animalia |
Phylum: | Mollusca |
Class: | Gastropoda |
Subclass: | Caenogastropoda |
Family: | Paludomidae |
Genus: | Reymondia |
Species: | R. pyramidalis |
Binomial name | |
Reymondia pyramidalis Bourguignat, 1888 | |
Synonyms | |
Reymondia minorSmith, 1889 |
Reymondia pyramidalis is a species of small freshwater snail, an aquatic gastropod mollusk in the family Paludomidae. This species is found in Tanzania and possibly the Democratic Republic of the Congo. Its natural habitat is freshwater lakes.
The shells of this species are similar in appearance to, though slightly smaller than, Reymondia horei . The maximum size of the shell is 9 millimetres (0.35 in) height by 4.5 millimetres (0.18 in) width at the widest point. It also has a similar habitat preference to R. horei: shallow water, underneath cobbles and rocks. [2]
The periostracum is a thin organic coating or "skin" which is the outermost layer of the shell of many shelled animals, including molluscs and brachiopods. Among molluscs it is primarily seen in snails and clams, i.e. in gastropods and bivalves, but it is also found in cephalopods such as Allonautilus scrobiculatus. Periostracum is an integral part of the shell, and it forms as the shell forms, along with the other shell layers.
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Reymondia horei is a species of freshwater snail with an operculum, an aquatic gastropod mollusk in the family Paludomidae. This species is found in Burundi, the Democratic Republic of the Congo, Tanzania, and Zambia. Its natural habitat is freshwater lakes.
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