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Taxonomy
Perna ricordeana was named by d'Orbigny (1846). It is not extant.
It was recombined as Isognomon ricordeanus by Lazo and Damborenea (2011).
It was recombined as Isognomon ricordeanus by Lazo and Damborenea (2011).
Sister species lacking formal opinion data
I. alatus, I. bathonicus, I. biplicatum, I. bouchardi, I. brentonensis, I. carolinensis, I. cereviciana, I. chavani, I. cornelliana, I. flambarti, I. flamberti, I. foliaceum, I. heberti, I. holmesi, I. igsognomoides, I. infraliassica, I. jupiter, I. karakuldjensis, I. lamberti, I. leona, I. lotenoensis, I. lugdunensis, I. lusitanicum, I. marspiallis, I. maxillatus, I. maxilliata, I. maxilliatus, I. nanus, I. perplana, I. promytilodes, I. promytiloides, I. pseudotomiyasui, I. quadrisulcatus, I. rekohuenis, I. ricordiana, I. rollei, I. rugosum, I. rugosus, I. sanchuensis, I. securiformis, I. subplana, I. subplanatum, I. subplanum, I. subspatulus, I. theseni, I. tomiyasui, I. tortum, I. trivale, I. valida, I. volaticum, I. woodsi, I. yinganensis, I. zelandica, I. inaequicrenata, I. maxillatus, I. choshiensis, I. flambarti, I. ichikawai, I. jupiter, I. mechanquilensis, I. mytiloides, I. promytiloides, I. pygmaea, I. rectangularis, I. rikuzenicus, I. sanchuensis, I. subplana, I. volaticum, I. mimeticus, I. ageroensis, I. bathonicus, I. murchisonii, I. patchamensis, I. thurmanni, Pedalion linguaeformis
Entered
by P. Novack-Gottshall on 2026-06-24; modified by P. Novack-Gottshall on 2026-06-24
Synonymy list
| Year | Name and author |
|---|---|
| 1846 | Perna ricordeana d'Orbigny |
| 2011 | Isognomon ricordeanus Lazo and Damborenea |
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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.
†Isognomon ricordeanus d'Orbigny 1846
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Diagnosis
No diagnoses are available