A-C. Orthoceras scabridum Angelin, 1880. A. Median section of a septal
Download scientific diagram | A-C. Orthoceras scabridum Angelin, 1880. A. Median section of a septal neck (sn) and connecting ring (conn); note that the calci− fied−perforate layer (cp) of the connecting ring is a direct continuation of the nacreous layer of the septal neck, × 50. B. Median section of a connecting ring to show the calcified−perforate layer (cp) with pores and the spherulitic− prismatic layer (sph), × 50. C. Tangential sec− tion of a connecting ring to show numerous, elongated pores in the calcified−perforate layer (cp), × 50. D, E. Rynchorthoceras sp. D. Tan− gential section of the calcified−perforate layer (cp) of the connecting ring to show numerous elongated pores, × 40. E. Transverse section of the calcified−perforate layer (cp) with numer− ous pores, × 40. from publication: Connecting ring structure and its significance for classification of the Orthoceratid Cephalopods | Mutvei, H. 2002. Connecting ring structure and its significance for classification of the orthoceratid cephalopods. Acta Palaeontologica Polonica 47 (1): 157–168. The connecting ring in orthoceratids is composed of two calcified layers: an outer spherulitic−prismatic and an | Connectivity, Classification and Structuralism | ResearchGate, the professional network for scientists.
PDF) Connecting ring structure and its significance for classification of the Orthoceratid Cephalopods
Orthoceras • 20-0
Orthoceras: The Allure of the Ancient Cephalopod
Orthoceras Specimen- #10Plus information on This Incredible Hunter
Full article: Siphuncular structures in Calciosiphonate nautiloid orders Actinocerida, Orthocerida and Barrandeocerida (Cephalopoda)
PDF) Connecting ring structure and its significance for classification of the Orthoceratid Cephalopods
PHYLOGENY OF THE NAUTILOIDEA - PDF Free Download
PDF) Connecting ring structure and its significance for classification of the Orthoceratid Cephalopods
A-C. Orthoceras scabridum Angelin, 1880. A. Median section of a septal
PDF) First report of Mid Ordovician (Darriwilian) cephalopods from the Saluk Mountains, southern Kopet-Dagh Region, north-east Iran
Late Cretaceous sturgeons (Acipenseridae) from North America, with two new species from the Tanis site in the Hell Creek Formation of North Dakota
PDF) Connecting ring structure and its significance for classification of the Orthoceratid Cephalopods
An Ultimate Guide to Orthoceras: The Straight Horn - Gage Beasley Prehistoric
