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Taxonomy
Cardium nanum was named by Khomenko (1931) [DISTRIBUTION: Cenozoic; North Pacific.]. It is not a trace fossil.
Sister species lacking formal opinion data
C. alabamense, C. cedrelarum, C. cottaldinum, C. erinaceum, C. heinzelini, C. hernandoense, C. hispidiforme, C. knappi, C. latisulcum, C. leucostoma, C. lineolatum, C. lithopodolicum, C. problematicum, C. rouyanum, C. scabrum, C. schweinfurthi, C. transcarpaticum, C. triangulatum, C. vindobonense, C. volckmanni, C. colosseum, C. estacianum, C. sellardsi, C. triboleti, C. hanpeizanense, C. anclotense, C. brooksvillense, C. coutinhoi, C. hernandoense, C. hortensium, C. leucostomum, C. plectopleura, C. ustrix, C. viridarii, C. colosseum
Synonymy list
| Year | Name and author |
|---|---|
| 1931 | Cardium nanum Khomenko |
| 2002 | Cardium nanum Kafanov et al. p. 3 |
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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.
†Cardium nanum Khomenko 1931
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Diagnosis
No diagnoses are available