Assertion: eurypterid | /r/CapableOf | leave their lagoon
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Source sentences:
text: Let us suppose, however, for the sake of argument, that the Pittsford-Shawangunk fauna did constitute the ancestral stock for the Bertie fauna and that in the dry and at times uncomfortably saline conditions of Salina time the eurypterids left their lagoon and went into the estuaries and even part way up the rivers, seeking proper salinity of water; then we should look for estuarine deposits of mud or perhaps coarser clastics in the Salina of central and western New York, and for the remains of marine organisms which are characteristic of such deposits.