...A. K. Miller ABSTRACT In this paper an attempt is made to summarize briefly the available data in regard to the Permian ammonoid zones represented in Soviet Russia, and to compare them with the familiar western Texas zones. It is pointed out that the Wolfcamp horizon (zone of Properrinites...

... gracilis conodont Zone by Barrick et al. (2004) and to the Preshumardites ammonoid Zone by Boardman et al. (1994a) . It represents the middle Missourian Dewey (Quivira) cyclothem and indicates correlation to the middle Kasimovian Stage of the Russian Upper Pennsylvanian succession ( Heckel et al...

...., 1999 , p. 51). This interval was referred to the Pseudaktubites stainbrooki ammonoid Subzone by Boardman et al. (1994b) and Work and Boardman (1995) and indicates correlation to the lower Gzhelian Stage of the Russian Upper Pennsylvanian succession. Dimensions D, H, W, and U represent...

... zone N :,T (the Fore-Ural zone) . Permian and Triassic deposits of the Russian Platform have long bee n considered a standard for correlation with synchronous rocks of othe r regions of the world. The relative distribution of normal and reverse d magnetism in Permian and Triassic rocks on the platform...

... ventral lobe and angular saddle on the subangular lateral zone. Knightoceras kempae Miller and Youngquist, 1949 (p. 38, pl. 16, fig. 1; pl. 55, fig. 1; pl. 58, figs. 1, 2, text-fig. 4) from the Lower Permian of Texas differs in its cross section, larger umbilicus, ventral siphuncle, smooth to keeled...

..., has prepared a report in which it is proposed that the lower limit of this system in the western Texas section shall be drawn at the unconformity separating the Wolfcamp beds (zone of Pseudoschwagerina ) from underlying rocks. This agrees with previous usage among geologists in the western Texas area...

... River Group) of North-Central Texas. Although regarded originally as Guadalupian, these deposits have been assigned recently to the Early Permian on the basis of marine fossils and questionable lithostratigraphic correlations between marine and continental strata. A review of ammonoid genera recovered...

... of the Four Corners Formation in eastern Kentucky. The interval represented by the Magoffin ammonoid fauna should be known as the Gastrioceras magoffinense Assemblage Zone. This overlies the well-known Diaboloceras neumeieri Zone, represented in the Kendrick Shale Member of the Hyden Formation in eastern...

... is poorly documented. Abbreviations: Fm—Formation, M— Macroleter occurrences, Ss—Sandstone. * [email protected] . † [email protected] . References Clifton , R.L. , 1946 , Middle Permian Cephalopoda from Texas and New Mexico : Journal of Paleontology...

... Zhurnal , 1987 : 52 - 61 (In Russian). Kusina , L. F. 2000 . Ammonoids from the Tournaisian-Viséan boundary beds of Pai-Khoy and the South Urals . Paleontological Journal , 34 : 486 - 494 . Lane , H. R. 1974 . Mississippian of southeastern New Mexico and West Texas—a wedge...

... of schwagerinids (for example, Chusenella andersoni , C. atlinensis , and Schwagerina pavilionensis ) suggest ages that range through the late Guadalupian. The highest zone of the Tethyan Midian lacks Yabeina and other neoschwagerinids and is based on the ammonoids Eoaraxoceras and Anderssonoceras . This zone...

... ) and the Cora beds (C 2 3 ) of the Timan arch. Dunbar places these beds in the upper Carboniferous zone of Triticites , seemingly because they fall in the section below the beds identified by the Russians as the “ Schwagerina horizon ” (C 3 3 ), Dunbar’s zone of Pseudoschwagerina...

... ). Kulagina et al. (2008) equated that stratigraphic interval to the Zapaltyubian Substage (upper part of the Serpukhovian Stage) of the East European (Russian) Platform sequence and to the upper part of the Fayettevillea - Delepinoceras [E 2 ] ammonoid zone. These correlations were based on perceived...

... this chronostratigraphic level, the Capitanian paleomagnetic N 1 P zone of the EEPP ( Fig. 2 ) is interpreted to correlate with the upper Capitanian paleomagnetic records of west Texas (USA) and the uppermost Abrahamskraal Formation in South Africa ( Hounslow and Balabanov, 2018 ). The numerical age of the latter...

... contains no identifiable gaps in the Mid-Carboniferous Boundary (MCB) portion and has a succession of foraminiferal, conodont, ammonoid and ostracod zones. The MCB in this section coincides with the base of the Bogdanovkian and is defined by the entry of Declinognathodus noduliferus. This level falls...

...) on the Russian Platform (Barskov et al., 1987). This species is recognized in Upper Missourian strata of north-cen- tral Texas (Barrick and Boardman, 1989). Idiognathodus lobu- latus appears in the upper Kasimovian 1. lobulatus Zone (Barskov et al., 1987), but continues into the overlying lower Gzhelian. Barrick...

... ammonoid zones and 2 bivalve zones; Jurassic, 70 ammonite zones; Cretaceous, 37 ammonite zones, subzones, and beds, 6 bivalve zones, and 11 belemnite zones and subzones. Siberia and Northeastern Asia provide stratigraphic sections, many of which are the best in the boreal realm regarding...

... to the Cave Run Lake ammonoid fauna in the Nancy Member of the Borden Formation at the Milepost 135 section (loc. 1) near Morehead, Rowan County, Kentucky The Cave Run Lake ammonoid fauna indicates correlation with the Pericyclus Zone and, on the basis of Muensteroceras cf. oweni , with the early...

... . New and little-known Viséan (Saourian) ammonoids . Paleontologicheskii Zhurnal , 1971 ( 1 ): 37 – 48 . (In Russian). Lane , H. R. 1974 . Mississippian of southeastern New Mexico and West Texas—a wedge-on-wedge relation . American Association of Petroleum Geologists Bulletin , 58 : 269...

... was determined to be representative of the upper Artinskian Baigendzhinian Substage; however, this was merely an inference in response to the knowledge that the Russian Kungurian ammonoids were considered as late Artinskian and pre-Roadian by Bogoslovskaya (1976) . Actually, the “upper” Artinskian sensu lato...