Species
Petrocrania acra (Huene, 1900)
Synonyymit
1900 Philhedra acra n. sp. — Huene , pp. 179
1963 Philhedrella acta (Huene, 1900) — Wright
Aiheeseen liittyvät julkaisut
Hoyningen-Huene, F. 1900. Supplement zu der Beschreibung der silurischen Craniaden der Ostseeländer, II. Verhandlungen der Russisch-Kaiserlichen Mineralogischen Gesellschaft zu St. Petersburg 38, 1, 171-207.
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Luokittelu
| Organism group | Biota |
| Kingdom | Animalia |
| Phylum | Brachiopoda |
| Subphylum | Craniiformea |
| Class | Craniata |
| Order | Craniida |
| Family | Craniidae |
| Genus | Petrocrania |
| Species | acra |
| bucculenta | |
| despectata | |
| glabra | |
| gracilis | |
| kokeni | |
| miltrata | |
| mimetica |
Levinneisyys ja viitteet
- Hoyningen-Huene, 1900a Kukruse Kukruse Stage
- Hoyningen-Huene, 1900a Vassilkovo, Leningrad Oblast