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Slimonia
''Slimonia'' is a genus of Silurian eurypterid roughly similar to the genus ''Pterygotus''. ''Slimonia'' resembled ''Pterygotus'', save that the former's telson is larger, and that its body was smaller and more slender than the latter. Unlike ''Pterygotus'', which lived in estuaries, ''Slimonia'' species lived exclusively in freshwater environments. ''Slimonia'' preyed on smaller fish, such as heterostracans and early osteostracans by seizing and rending them with its large chelicerae. The largest species of ''Slimonia'' was extremely long, around two meters. It carried its body on spindly legs and was likely an ambush predator. The lungs of the species were located on the underside of the body in a series of folds.
==Description==
''Slimonia'' is distinguishable by its quadrate (roughly square) prosoma, or head, with small compound eyes on the front corners. They had large cordate bodies, with a narrow postabdomen and a telson with a "strongly expanded anterior half." Their chelicerae (claws) were small; their walking legs had denticles, but no spines. Genital appendages were long and narrow in both males and females.〔 1955. Merostomata. ''Treatise on Invertebrate Paleontology, Part P Arthropoda 2, Chelicerata'', P: 30.〕
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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