A review of cyclostomiceratid nautiloids, including new taxa from the Lower Ordovician of Öland, Sweden

A. H. King

1998

Article

Palaeontology 41(2):335-347

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Taxa discussed in this work:

• Amphoroceras
• Cyclostomiceras depressius
• Cyclostomiceras depressum
• Eocyclostomiceras
• Eocyclostomiceras clinoseptatum
• Eocyclostomiceras subventrum
• Eocyclostomiceras ventrum
• Gomphoceras eichwaldi
• Microstomiceras
• Microstomiceras holmi
• Paracyclostomiceras floweri
• Paracyclostomiceras paucitumidum
• Pictetoceras oliviae

Taxonomy:

• Gomphoceras eichwaldi belongs to Gomphoceras - de Verneuil (1845)
• Cyclostomiceras depressum belongs to Cyclostomiceras - Ulrich et al. (1943)
• Cyclostomiceras depressius belongs to Cyclostomiceras - Cecioni (1953)
• Paracyclostomiceras floweri belongs to Paracyclostomiceras - Cecioni (1953)
• Eocyclostomiceras ventrum belongs to Eocyclostomiceras - Chen, in Qi et al (1983)
• Eocyclostomiceras subventrum belongs to Eocyclostomiceras - Chen, in Qi et al (1983)
• Eocyclostomiceras clinoseptatum belongs to Eocyclostomiceras - Chen, in Qi et al (1983)
• Eocyclostomiceras belongs to Cyclostomiceratidae - King (1998)
• Microstomiceras belongs to Cyclostomiceratidae - King (1998)
• Amphoroceras belongs to Cyclostomiceras - King (1998)
• Paracyclostomiceras paucitumidum belongs to Paracyclostomiceras - King (1998)
• Microstomiceras holmi belongs to Microstomiceras - King (1998)