Description
active from the Silurian to Devonian periods
They are back row left to right: Terry Butcher
Bony core of the left horn and a small part of the Skull seen from behind
usually referred to as a 'polyp' was the subject of a major series of researches by the Swiss naturalist Abraham Trembley (1710-1784) whose work is cited in the letter accompanying this illustration
Greetings from Laguna Beach, California Product:Fine art poster active from the Silurian to
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