By S. V. Boletzky (auth.), Federico Olóriz, Francisco J. Rodríguez-Tovar (eds.)
Relying at the most up-to-date analytical innovations, this all-embracing new reference deals entire insurance of the improvement, evolution, and morphology of either fossil and dwelling cephalopods. In 34 in-depth chapters a gaggle of fifty one overseas neontologists and peleontologists provide and opverview of present equipment, facts, analyses, and interpretations, and posit feedback for destiny study.
With its exceptional mixture of high-quality contributions on dwelling and fossil cephalopods, this e-book offers researchers and complicated scholars in paleontology, invertebrate zoology, evolutionary biology, and allied disciplines with a trove of modern information and authoritative interpretations that would immeasurably gain their very own studies.
Read or Download Advancing Research on Living and Fossil Cephalopods: Development and Evolution Form, Construction, and function Taphonomy, Palaeoecology, Palaeobiogeography, Biostratigraphy, and Basin Analysis PDF
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Extra info for Advancing Research on Living and Fossil Cephalopods: Development and Evolution Form, Construction, and function Taphonomy, Palaeoecology, Palaeobiogeography, Biostratigraphy, and Basin Analysis
The New York State specimen was collected by James Hall from the Cherry Valley Limestone. Moroccan material was surface collected by R. H. Mapes from approximately 17 kilometers east-southeast of Erfoud, Morocco. Material studied by G. Petter (from the collection ofN. Menchikoffand G. Petter) is from the Valley of the Saoura in western Algeria (just southeast of the Moroccan-Algerian border, southeast of Erfoud). In general, the specimens studied were part of larger juvenile or adult specimens.
Mapes,2 and Harry Mutvei 3 'paleont. Institute of the Russian Academy of Science 117647 Moscow 2Department of Geological Sciences Ohio University Athens, Ohio 4570 I 3Swedish Museum of Natural History Department of Palaeozoology S-10405 Stockholm Abstract Ultrastructural study of a longiconic cephalopod, formerly described as Bactrites postremus (Miller, 1930; Mapes, 1979), reveals that the shell wall, consisting of two prismatic layers and lacking a nacreous layer, differs strongly from that of bactritoids.
75 whorls of the postembryonic portion preserve the outermost shell layer (the edge of this well preserved layer is clearly visible in Figure 8A). On the rest of the specimen, the shell consists of only the inner shell layers with little or no ornamental details preserved. The excellent preservation on the ammonitella and part of the postembryonic whorls permits a closer examination of the surface details of the ornament on both the embryonic and postembryonic parts of the shell. The measurements of Iirae spacing on this specimen were made, by necessity, on the flank, because of overlapping whorls.