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Taxonomy
Modiolus trigonalis was named by Slodkewitsch (1936) [DISTRIBUTION: Northeastern Pacific; Early Miocene.]. It is not a trace fossil.
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. 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
Synonymy list
| Year | Name and author |
|---|---|
| 1936 | Modiolus trigonalis Slodkewitsch |
| 2003 | Modiolus trigonalis Kafanov and Ogasawara p. 52 |
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If no rank is listed, the taxon is considered an unranked clade in modern classifications. Ranks may be repeated or presented in the wrong order because authors working on different parts of the classification may disagree about how to rank taxa.
†Modiolus trigonalis Slodkewitsch 1936
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Diagnosis
No diagnoses are available