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Polychelida is an infraorder of decapod crustaceans. Fossil representatives are known dating from as far back as the Upper Triassic. A total of 38 extant species, all in the family Polychelidae, and 55 fossil species have been described.
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infraorder polychelidae extant fossil clade species classification lobsters group back upper triassic 38 family 55 order palinura reptantia chelae decapod
| Subject | Predicate | Object | Confidence | Src |
|---|---|---|---|---|
| Polychelida | is a | infraorder of decapod crustaceans | 0.90 | text |
| Polychelida | is a | sister clade to the infraorder Astacidea | 0.90 | text |
| Polychelida | related to Classification | Reptantia | 0.60 | section |
| Polychelida | related to Classification | Astacidea | 0.60 | section |
| Polychelida | related to Classification | The | 0.60 | section |
| Polychelida | related to Classification | Polychelida's | 0.60 | section |
| Polychelida | related to Classification | Decapoda | 0.60 | section |
| Polychelida | related to Classification | Wolfe | 0.60 | section |
| Polychelida | related to Classification | Five | 0.60 | section |
| Polychelida | related to Classification | Polychelidae | 0.60 | section |
| Polychelida | related to Classification | Upper Triassic | 0.60 | section |
| Polychelida | related to Classification | Mesozoic | 0.60 | section |
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