Bothriolepis Canadensis Single in Matrix Cast Model Replica
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Bothriolepis Canadensis Single in Matrix Cast Model Replica measures 259mm or 10.3 inches. Museum quality polyurethane resin cast made in the USA. Placoderm, earliest jawed vertebrate. Upper Devonian. Gaspe Bay, Canada.
Bothriolepis is a widespread, abundant and diverse genus of antiarch placoderms that lived during the Middle to Late Devonian period of the Paleozoic Era. Historically, Bothriolepis resided in an array of paleo-environments spread across every paleocontinent, including near shore marine and freshwater settings. There are two openings through the head of Bothriolepis: a keyhole opening along the mid-line on the upper side for the eyes and nostrils and an opening for the mouth on the lower side near the anterior end of the head. A discovery regarding preserved structures that appear to be nasal capsules confirms the belief that the external nasal openings lay on the dorsal side of the head near the eyes. The lower jawbone consists of differentiated blade and biting portions. Next to the mandibular joint are the prelateral and infraprelateral plates, which both are canal-bearing bones.
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