Genus
Hirella Cossman, 1920
Aiheeseen liittyvät julkaisut
Heintz, A 1969. New agnaths from Ringerike Sandstone.
List of species
1. Hirella denisoni Heintz, 1969 | Ludlow
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Luokittelu
| Organism group | Biota |
| Kingdom | Animalia |
| Phylum | Chordata |
| Subphylum | Vertebrata |
| Superclass | Agnatha |
| Class | Cephalaspidomorphi |
| Subclass | Osteostraci |
| Order | Ateleaspidiformes |
| Suborder | Ateleaspidoidei |
| Genus | Hirella |
| Species | denisoni |
Levinneisyys ja viitteet
- Heintz, 1969 Nes, Norway Ludlow