| Euthycarcinoidea Temporal range:
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|---|---|
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| Life restoration of Apankura | |
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| Life restoration of Sottyxerxes | |
Scientific classification 
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| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Arthropoda |
| Clade: | Mandibulata |
| Subclass: | †Euthycarcinoidea Gall & Grauvogel, 1964 |
| Order: | †Euthycarcinida Gall & Grauvogel, 1964 |
| Genera | |
|
See text | |
Euthycarcinoidea are an enigmatic group of extinct, possibly amphibious arthropods that ranged from Cambrian to Triassic times. Fossils are known from Europe, North America, Argentina, Australia, and Antarctica.