A new enigmatic hyolith from the Cambrian of West Gondwana and its bearing on the systematics of hyoliths
作者： Gerd Geyer
DOI: 10.1002/SPP2.1098
关键词: Biology 、 Acuminate 、 Genus 、 Gondwana 、 Systematics 、 Morphology (biology) 、 Hyolitha 、 Group (stratigraphy) 、 Paleontology 、 Hyolithida
摘要: The genus Aladraco nom. nov. is described and discussed, along with two species recognized from coeval strata of the lower traditional middle Cambrian, A. schloppensis (Wurm, 1925) Tannenknock Formation Franconian Forest region, Germany, A. ougnatensis sp. Jbel Wawrmast eastern Anti-Atlas, Morocco. was formerly known as Oxyprymna Kiderlen, 1933, a preoccupied generic name requiring renaming genus. bears morphological characters such size, shape external ornamentation conch which clearly indicate systematic position in class Hyolitha. A number characters, tripartition into an axial chamber lateral acuminate processes, course apertural margin, differ considerably those seen orders Hyolithida Orthothecida, appear to distinct differences functional morphology. However, similarities representatives suggest that are derived this group should be dealt hitherto unrecognized suborder family, introduced Aladracina subord. Aladracidae fam.
sci-hub.se 参考文章(21)
Alexei Yu. Rozanov, Andrey Yu. Zhuravlev, The Lower Cambrian Fossil Record of the Soviet Union Topics in Geobiology. pp. 205- 282 ,(1992) , 10.1007/978-1-4899-2427-8_7
MÓNICA MARTÍ MUS, JAN BERGSTRÖM, THE MORPHOLOGY OF HYOLITHIDS AND ITS FUNCTIONAL IMPLICATIONS Palaeontology. ,vol. 48, pp. 1139- 1167 ,(2005) , 10.1111/J.1475-4983.2005.00511.X
Ed Landing, Gerd Geyer, A unified Lower - Middle Cambrian chronostratigraphy for West Gondwana Acta Geologica Polonica. ,vol. 54, pp. 179- 218 ,(2004)
JOHN S. PEEL, ELLIS L. YOCHELSON, Permian Toxeumorphorida from Greenland: an appraisal of the molluscan class Xenoconchia Lethaia. ,vol. 17, pp. 211- 221 ,(1984) , 10.1111/J.1502-3931.1984.TB01619.X
Gerd Geyer, Tony Vincent, The Paradoxides puzzle resolved: the appearance of the oldest paradoxidines and its bearing on the Cambrian Series 3 lower boundary Paläontologische Zeitschrift. ,vol. 89, pp. 335- 398 ,(2015) , 10.1007/S12542-014-0225-5
Artem V. Kouchinsky, Skeletal microstructures of hyoliths from the Early Cambrian of Siberia Alcheringa. ,vol. 24, pp. 65- 81 ,(2000) , 10.1080/03115510008619525
LADISLAV MAREK, ARNOST GALLE, The tabulate coral Hyostragulum, an epizoan with bearing on hyolithid ecology and systematics Lethaia. ,vol. 9, pp. 51- 64 ,(1976) , 10.1111/J.1502-3931.1976.TB00951.X
John M. Malinky, Vivianne Berg-Madsen, A revision of Holm's Early and early Mid Cambrian hyoliths Of Sweden Palaeontology. ,vol. 42, pp. 25- 65 ,(1999) , 10.1111/1475-4983.00061
Michael Steiner, Guoxiang Li, Yi Qian, Maoyan Zhu, Bernd-Dietrich Erdtmann, Neoproterozoic to Early Cambrian small shelly fossil assemblages and a revised biostratigraphic correlation of the Yangtze Platform (China) Palaeogeography, Palaeoclimatology, Palaeoecology. ,vol. 254, pp. 67- 99 ,(2007) , 10.1016/J.PALAEO.2007.03.046