Erettopterus
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Erettopterus is a genus of large predatory eurypterid, an extinct group of aquatic arthropods. Fossils of Erettopterus have been discovered in deposits ranging from Early Silurian to the Early Devonia
Pterygotus b
Restoration of E. osiliensis.
Illustration of fossils of E. bilobus.
Holotype of E. grandis, a telson.
Slimonia
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Slimonia is a genus of eurypterid, an extinct group of aquatic arthropods. Fossils of Slimonia have been discovered in deposits of Silurian age in South America and Europe. Classified as part of the f
Erettopterus
…revealed that it was a predator with high visual acuity, but it was not as highly specialized or active as Jaekelopterus and Pterygotus, it was more like Slimonia acuminata, and probably used its enlarged chelicerae for grasping rather than a more specialized feeding. Erettopterus was a big eurypterid, with the largest…
Slimonia acuminata 1
Life restoration of S. acuminata. The short chelicerae are hidden beneath the head.
Fossil of S. acuminata
Ventral and dorsal views of S. acuminata. Note the ventral view is missing the short chelicerae that were actually present.