Cyptendoceratidae Zhuravleva 1994

• Main Authors: Kröger, Björn, Pohle, Alexander
• Format: Text
• Language: unknown
• Published: Zenodo 2021
• Subjects: Biodiversity; Taxonomy; Animalia; Dissidocerida; Cyptendoceratidae; Argentine; Ny Friesland; Spitsbergen
• Online Access: https://dx.doi.org/10.5281/zenodo.5794304; https://zenodo.org/record/5794304

Family Cyptendoceratidae Zhuravleva, 1994 Emended diagnosis Straight longicones with siphuncle marginal or submarginal, relatively wide with concave or convexoconcave segments; septal necks short, loxochoanitic to orthochoanitic; connecting rings relatively thick; endosiphuncular deposits form thick ventral rod which merges adapically into a complete siphuncular filling, diaphragms unknown; cameral deposits epi- and hyposeptal, concentrated on prosiphuncular side. Remarks The diagnosis of the Cyptendoceratidae largely follows Zhuravleva (1994), but is more restricted following the emendation of the Baltoceratidae by Kröger et al. (2007), in which rod-bearing smooth longicones with tubular siphuncles, such as Rangeroceras Hook & Flower, 1977, Rhabdiferoceras Flower, 1964 and Veneficoceras Hook & Flower, 1977, are now included within the Baltoceratidae. The family now contains rod-bearing smooth and annulated forms with concave siphuncular segments and includes four genera: Cyptendoceras Ulrich & Foerste, 1936, Amsleroceras Hook & Flower, 1977, Catoraphiceras Ulrich & Foerste, 1936, and Hemichoanella Teichert & Glenister, 1954. : Published as part of Kröger, Björn & Pohle, Alexander, 2021, Early-Middle Ordovician cephalopods from Ny Friesland, Spitsbergen - a pelagic fauna with Laurentian affinities, pp. 1-102 in European Journal of Taxonomy 783 (1) on page 44, DOI: 10.5852/ejt.2021.783.1601, http://zenodo.org/record/5793422 : {"references": ["Zhuravleva F. A. 1994. The order Dissidocerida (Cephalopoda). Paleontological Journal 28: 115 - 132.", "Kroger B., Beresi M. & Landing E. 2007. Early orthoceratoid cephalopods of the Argentine Precordillera (Lower - Middle Ordovician). Journal of Paleontology 81: 1266 - 1283. https: // doi. org / 10.1666 / 06 - 013.1", "Hook S. C. & Flower R. H. 1977. Late Canadian (Zones J, K) cephalopod faunas from southwestern United States. New Mexico Bureau of Mines and Mineral Resources, Memoir 32: 1 - 102.", "Flower R. H. 1964. The nautiloid order Ellesmeroceratida (Cephalopoda). State Bureau of Mines and Mineral Resources, New Mexico Institute of Mining and Technology, Memoir 12: 1 - 164.", "Teichert C. & Glenister B. F. 1954. Early Ordovician cephalopod fauna from northwestern Australia. Bulletins of American Paleontology 35: 7 - 112."]}