Sentence examples for based on shell character from inspiring English sources

The descriptions in the 2012 study appear to be based on shell character states and so the possibility that these snails were derived from early Pliocene Chinese Gammatricula in the nearby provinces of Yunnan and Guangxi cannot be excluded.

Recent reports of Tricula from Nepal (e.g., Tricula godawariensis Nesemann & Sharma 2007) [ 41] are simlarly data deficient, with descriptions of new taxa based on shell characters only – as noted by Davis [ 42], one cannot distinguish these taxa on the basis of shell and radula characters alone.

The absence of discrete, homogenous groups based on shell shape showed the unsuitability of these characters for taxonomic purposes in Radix.

Given that there is morphological and phylogenetic evidence that these forms are distinct from those already described [ 7], they were incorporated into a revised version of the identification key, based on shell measurements made by Johnson et al.[ 7] and characters that have been used to distinguish other species of Rhagada[ 8].

Taxonomic assignments were made based on shell morphology.

All taxonomic assignments made are based on shell morphology and later confirmed by molecular results.

Therefore, any attempt to find discrete, consistent groups based on shell shape differences is obviously bound to fail, let alone to delimit or identify biological species on the basis of these characters [ 1, 6].

This means that species identifications based on shell morphology have probably not resulted in reliable data.

Melanoides specimens were identified based on shell morphology using the relevant literature [ 30, 31].

She designed one rug based on shells she collected with her children in Hawaii.

33 Current taxonomic concepts are based on shells recovered from surface sediments.