Ammagnostidae
Temporal range: Cambrian–Ordovician |
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Ammagnostidae
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Ammagnostidae is a family of trilobites in the suborder Agnostina, small, eyeless, isopygous trilobites with a thorax consisting of 2 segments only. Four genera have been assigned to it:
- Ammagnostus Öpik, 1967
- Ammagnostus psammius Öpik, 1967 (Type)
- Ammagnostus bassus (Öpik, 1967)
- Ammagnostus bella Guo & Luo, 1996
- Ammagnostus beltensis (Lochman, 1944)
- Ammagnostus cryptus
- Ammagnostus cylindratus Guo & Luo, 1996
- Ammagnostus duibianensis Lu & Lin, 1989
- Ammagnostus histus
- Ammagnostus hunanensis
- Ammagnostus integriceps Öpik, 1967
- Ammagnostus laiwuensis (Lorenz, 1906)
- Ammagnostus mitis Öpik, 1967
- Ammagnostus sinensis Peng, 1987
- Ammagnostus wangcunensis Peng & Robison
- Hadragnostus Öpik, 1967
- Kormagnostus Resser, 1938
- Proagnostus Butts, 1926
They lived during the late Cambrian period to the Ordovician period.