Eurypteroidea
| Eurypteroidea Temporal range: Silurian–Devonian |
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| Scientific classification | |
| Kingdom: | Animalia |
| Phylum: | Arthropoda |
| Subphylum: | Chelicerata |
| Class: | Merostomata |
| Order: | †Eurypterida |
| Suborder: | †Eurypterina |
| Superfamily: |
†Eurypteroidea Burmeister, 1843 |
| Families | |
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See text |
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See text
Eurypteroidea are an extinct superfamily of eurypterids.
Eurypteroidea, which lived from the Ordovician to Permian periods, were characterized by their last pair of prosomal (head) appendages, which were developed as swimming legs, carrying paddles formed by the expansion of the two penultimate joints.
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