奇異蟲(學名:Paradoxides)是生存於寒武紀的一屬三葉蟲,生活在大陸棚的泥質沉積中。這類三葉蟲的體型比寒武紀的任何其他屬三葉蟲都還要大——最大的個體可達一公尺長。牠們有寬闊的頭部、小型的尾和呈圓錐狀逐漸變小的長胸部,胸節數量隨著成長而增加。頭鞍的前部裂片呈扁平狀,側頰則延長為刺,眼睛很發達。[1]
- Paradoxides paradoxissimus (Wahlenberg, 1818) 異名 Entomostracites paradoxissimus
- Paradoxides carens (Barrande, 1846)
- Paradoxides davidis (Salter, 1863)
- Paradoxides gracilis (Boeck, 1827) 異名 Trilobites desideratus, Vinicella desideratus
- Paradoxides bidentatus
- Paradoxides brachyrhachis Linnarsson, 188
- Paradoxides briareus Geyer, 1993
- Paradoxides forchhammeri
- Paradoxides grandoculus
- Paradoxides haywardi
- Paradoxides hicksii Salter, 1865
- Paradoxides knizeki (Kordule, 1990)
- Paradoxides mandiki (Kordule, 1990)
- Paradoxides minor (Boeck, 1827)
- Paradoxides oppanol (Šnajdr, 1978)
- Paradoxides rohanovicus (Šnajdr, 1986)
- Paradoxides rugulosus
- Paradoxides sirokyi (Šnajdr, 1986)
- Paradoxides walcotti Shaller & Foerste, 1888
以下的物種現時已被置入其他屬。