Speonesydrion: An Early Devonian Dipnoan with Primitive Toothplates |
Common terms and phrases
angular anteriorly articular branch Campbell & Barwick Campbell and Barwick canal runs Chirodipterus australis cosmine crests cushion dentary denticles dentine dermal bones dermopalatine Dipnorhynchus dipterid Dipterus dorsal Early Devonian enamel external dermal bones f mc f md f me VII f vm p₁ FIGURE foramen furrow genera genus glenoid fossa Griphognathus groove growth heel holotype iani labial pit lateral line canals left side lehmanni lingual lower jaw mandible mandibular canal Meckel's cartilage Meckelian bone Meckelian cavity medial mentalis internus VII milchi nasal capsule Neoceratodus nerve Palaeo Ichthyologica palate parasphenoid pattern perichondral lining perichondrium placoderm position posterior edge posteriorly Pragian prearticular preglenoid process pterygoids radial ramus mentalis internus region right side right tooth plate Scale skull roof space species specimen Speonesydrion splenial Stereo-pair stratigraphic Stratigraphie structure submandibular suprameckelian surangular sussmilchi Taemas teeth thick tissue tooth plates tooth ridges toothplate transverse Uranolophus Wee Jasper