Checklist for Family Tetradellidae Swartz, 1936
and region Middle Ordovician (Ordovician)
Genera for Middle Ordovician
13 Genera with 13 Species Ceratopsis Ulrich, 1894 | | 0 | Species | Taxom | Ctenobolbina Ulrich, 1890 | | 0 | Species | Taxom | Dilobella Ulrich, 1894 | | 0 | Species | Taxom | | Lomatobolbina Jaanusson, 1957 | | 1 | Species | Taxom | | Oecematobolbina Jaanusson, 1957 | | 2 | Species | Taxom | | Ogmoopsis Hessland, 1959 | | 1 | Species | Taxom | | Polyceratella Öpik, 1940 | | 1 | Species | Taxom | | Sigmobolbina Henningsmoen, 1957 | | 2 | Species | Taxom | | Sigmoopsis Henningsmoen, 0 | | 2 | Species | Taxom | | Sylthis Schallreuter, 1983 | | 1 | Species | Taxom | | Tetradella Ulrich, 0 | | 2 | Species | Taxom | | Vittella Schallreuter, 1984 | | 1 | Species | Taxom | Winchellatia Kay, 1940 | | 0 | Species | Taxom |
Species list for Middle Ordovician
13 Species | Lomatobolbina craspedota Jaanusson, 1957 | | | Oecematobolbina nitens Jaanusson, 1957 | | | Oecematobolbina varicata Harris, 1957 | | | Ogmoopsis variabilis Sarv, 1959 | | | Polyceratella bonnemai Thorslund, 1940 | | | Sigmobolbina pentagona Jaanusson, 1957 | | | Sigmobolbina sigmoidea Jaanusson, 1957 | | | Sigmoopsis platyceras Öpik, 1937 | | | Sigmoopsis schmidti | | | Sylthis billingensis Schallreuter, 1983 | | | Tetradella complicata | | | Tetradella perplexa | | | Vittella gullhoegensis Schallreuter, 1984 | |
Subnodes of Tetradellidae with occurrences in Middle Ordovician
Links, sources and further information Tetradellidae at gbif.org
Tetradellidae at irmng.org
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