Kingdom Animalia Class Merostomata Phylum Arthropoda Order Eurypterid | Subphylum Chelicerata Suborder †Eurypterina Rank Superfamily | |
Similar Eurypterid, Dolichopterus, Stylonuridae, Hughmilleria, Adelophthalmus | ||
Description
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.
Families
References
Eurypteroidea Wikipedia(Text) CC BY-SA