Family
Spyroceratidae Shimizu et Obata, 1935
Selection of related publications
Stumbur, H. A. 1956. On the nautiloids of Kohila Subseries (Upper Ordovician of East Baltic). Tartu Riikliku Ülikooli Toimetised 42, 176-185.
Stumbur, H. 1955. Eesti NSV ülem-ordoviitsiumi nautiloiididest [Diplomitöö. Juhendaja: A. Rõõmusoks]. pp. 1-159.
List of species
1. Spyroceras perlaeve (Strand, 1934) | Upper Ordovician
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Classification
| Organism group | Biota |
| Kingdom | Animalia |
| Phylum | Mollusca |
| Class | Cephalopoda |
| Subclass | Orthoceratia |
| Order | Pseudorthocerida |
| Family | Pseudorthoceratidae |
| Spyroceratidae | |
| Genus | Spyroceras |
| Lyecoceras |