Rochester Shale (Middle Silurian; New York State, USA) by James St. John ● portfotolio

James St. John: Arctinurus boltoni (Rochester Shale, Middle Silurian; Middleport, New York State, USA)

James St. John: Dictyonema sp. (fossil dendroid graptolite) (Rochester Shale, Middle Silurian; Middleport Quarry, Middleport, New York State, USA)

James St. John: Desmograptus sp. (fossil dendroid graptolite) (Rochester Shale, Middle Silurian; Middleport Quarry, Middleport, New York State, USA) 1

James St. John: Desmograptus sp. (fossil dendroid graptolite) (Rochester Shale, Middle Silurian; Middleport Quarry, Middleport, New York State, USA) 2