undet. Eurypterida

Geological context: Late Silurian, Williamsville Waterlime. Collection locality: Ridgemount Quarry South, NW corner of Ridgemount Rd & Bertie St, about 8 km W of Fort Erie, & about 11 km W of Niagara River, Bertie Township, Welland County, Ontario, Canada. Collected by Samuel J. Ciurca. IP number 428146; lot count 1; accn=YPM.11827; associatedwith=on same slab: IP.428142,on same slab: IP.428143,on same slab: IP.428144,on same slab: IP.428145,on same slab: IP.428147,on same slab: IP.428148,on same slab: IP.428149,on same slab: IP.428150,on same slab: IP.428151,on same slab: IP.428152,on same slab: IP.428153,on same slab: IP.428160,on same slab: IP.428161,on same slab: IP.428162,on same slab: IP.428163,IP.428171,IP.428173,IP.428174,IP.428170,IP.428165,IP.428175,IP.428176,IP.428167,IP.428168,IP.428169,IP.428166,IP.428172.