| Basic info | Taxonomic history | Classification | Included Taxa |
| Morphology | Ecology and taphonomy | External Literature Search | Age range and collections |
Cyclocardia poronaiensis
Taxonomy
No taxonomic data are available
Sister species
Cardita (Cyclocardia) steinkei, C. abesinaiensis, C. akagii, C. borealis, C. castor, C. castrana, C. christiei, C. compressa, C. dodairensis, C. granulata, C. hannai, C. hannibali, C. kurilensis, C. mesembria, C. moniligena, C. novangliae, C. pseutella, C. spurca, C. subtenta (syn. Venericardia chehalisensis), C. terryi, C. tokunagai, C. trentensis, C. velutinus (syn. Cardita volckmanni), C. yoshidai, C. zuliana, Venericardia (Cyclocardia) ferruginea, Venericardia (Cyclocardia) harukii, Venericardia (Cyclocardia) otatsumei, Venericardia (Cyclocardia) yokoyamai
Sister species lacking formal opinion data
Cardita subnipponica, C. antiqua, C. belogolovensis, C. erimoensis, C. ezoensis, C. hamiltonensis, C. kickxi, C. kovatschensis, C. longini, C. orientalis, C. ottonis, C. pilvoensis, C. praeruptensis, C. roundiformis, C. subnipponica, C. tokudai, C. wajampolkensis, C. yakatagensis, Venericardia vestitoides
Synonymy list
No taxonomic opinions are available
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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.
Diagnosis
No diagnoses are available
Measurements
No measurements are available
No ecological data are available
Age range: Late/Upper Oligocene or 28.40000 to 23.03000 Ma
Collections (6 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Late/Upper Oligocene | Japan | Cyclocardia poronaiensis (70600 70604 70607 70610 70613 70615) |