What big eyes you have: the ecological role of giant pterygotid eurypterids

New poraspids (Agnatha, Heterostraci) from the Early Devonian of the western United States

(2011) David K. Elliott et al.   JOURNAL OF VERTEBRATE PALEONTOLOGY

Modern optics in exceptionally preserved eyes of Early Cambrian arthropods from Australia

(2011) Michael S. Y. Lee et al.   NATURE

Acute vision in the giant Cambrian predator Anomalocaris and the origin of compound eyes

(2011) John R. Paterson et al.   NATURE

Cope's Rule and Romer's theory: patterns of diversity and gigantism in eurypterids and Palaeozoic vertebrates

(2009) J. C. Lamsdell et al.   Biology Letters

The origin of pterygotid eurypterids (Chelicerata: Eurypterida)

(2009) O. ERIK TETLIE et al.   PALAEONTOLOGY

Giant claw reveals the largest ever arthropod

(2007) S. J Braddy et al.   Biology Letters