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Bayardella
''Bayardella'' is a genus of small, neritiform cylindrical shelled gastropods belonging to the family Planorbidae. They are native and endemic to Australia. Species of ''Bayardella,'' like other Planorbidae, Planorbids, are non-operculate. Description The aperture (shell mouth) is typically almost as long as the entire shell with some specimens being described as 'almost abalone-shaped'. The species of ''Bayardella'', when adult, often display medium-sized shells that are usually 5-9mm in size. The shells often display heavy spiral ridges on the periostracum, have a deep Umbilicus (mollusc), umbilicus and have a margin to the Columella (gastropod), columellar that is reflected and curved slightly but without a fold. The shells of ''Bayardella'', like other Planorbidae, Planorbids, are typically Sinistral and dextral, sinistral. Ecology ''Bayardella'' can be found living on the underside of stones and pieces of wood (i.e. fallen logs or branches) in the upper reaches of small ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bayardella Johni
''Bayardella'' is a genus of small, neritiform cylindrical shelled gastropods belonging to the family Planorbidae. They are native and endemic to Australia. Species of ''Bayardella,'' like other Planorbidae, Planorbids, are non-operculate. Description The aperture (shell mouth) is typically almost as long as the entire shell with some specimens being described as 'almost abalone-shaped'. The species of ''Bayardella'', when adult, often display medium-sized shells that are usually 5-9mm in size. The shells often display heavy spiral ridges on the periostracum, have a deep Umbilicus (mollusc), umbilicus and have a margin to the Columella (gastropod), columellar that is reflected and curved slightly but without a fold. The shells of ''Bayardella'', like other Planorbidae, Planorbids, are typically Sinistral and dextral, sinistral. Ecology ''Bayardella'' can be found living on the underside of stones and pieces of wood (i.e. fallen logs or branches) in the upper reaches of small ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |