Megalograptus
''Megalograptus'' is a genus of eurypterid, an extinct group of aquatic arthropods. Fossils of ''Megalograptus'' have been recovered in deposits of Katian (Late Ordovician) age in North America. The genus contains five species: ''M. alveolatus'', ''M. ohioensis'', ''M. shideleri'', ''M. welchi'' and ''M. williamsae'', all based on fossil material found in the United States. Fossils unassigned to any particular species have also been found in Canada. The generic name translates to "great writing" and originates from the mistaken original belief that ''Megalograptus'' was a type of graptolite, often given names ending with -''graptus'' (meaning 'writing'). ''Megalograptus'' was a large predatory megalograptid eurypterid, with the largest and best known species, ''M. ohioensis'', reaching body lengths of . Some species were substantially smaller, with the smallest, belonging to a hitherto undetermined species, only growing to about in length. Morphologically, ''Megalograptus'' ...
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Megalograptus Size
''Megalograptus'' is a genus of eurypterid, an extinct group of aquatic arthropods. Fossils of ''Megalograptus'' have been recovered in deposits of Katian (Late Ordovician) age in North America. The genus contains five species: ''M. alveolatus'', ''M. ohioensis'', ''M. shideleri'', ''M. welchi'' and ''M. williamsae'', all based on fossil material found in the United States. Fossils unassigned to any particular species have also been found in Canada. The generic name translates to "great writing" and originates from the mistaken original belief that ''Megalograptus'' was a type of graptolite, often given names ending with -''graptus'' (meaning 'writing'). ''Megalograptus'' was a large predatory megalograptid eurypterid, with the largest and best known species, ''M. ohioensis'', reaching body lengths of . Some species were substantially smaller, with the smallest, belonging to a hitherto undetermined species, only growing to about in length. Morphologically, ''Megalograptus'' ...
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