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Taxonomy
Modiola dimidiata was named by Münster (1841). It is a 3D body fossil. Its type locality is St. Cassian (Munster coll), which is in a Julian carbonate limestone in the Cassian Formation of Italy.
It was recombined as Modiolus dimidiatus by Yang et al. (1987).
It was recombined as Modiolus dimidiatus by Yang et al. (1987).
Sister species lacking formal opinion data
M. altijugatus, M. arcacea, M. attenuatus, M. baylei, M. beirensis, M. blandus, M. capensis, M. ducatelli, M. eberstadtensis, M. flagellifer, M. formosissimus, M. galpinianus, M. gammalensis, M. gibbosus, M. harrimani, M. inbricatus, M. jolyi, M. kremmlingensis, M. lobatus, M. mediocarinatus, M. minalatus, M. mingaudi, M. minuta, M. ornatus, M. parallelus, M. parvoblongus, M. perryi, M. purpuratus, M. qinghaiensis, M. romani, M. rusticus, M. sestiniae, M. siliquus, M. subimbricatus, M. suprarectus, M. thiollierei, M. thiollieri, M. thomsoni, M. transiens, M. trequetra, M. triangulus, M. wanizakiensis, M. waverliensis, M. nysti, M. lorioli, M. semicircularis