Pl 33, figs 1-7; pl 34, figs 1-14; pl 79, figs 1-10: 1927: Tropites subbullatus Smith: 1951: Tropites subbullatus Spath p. 88: 1977: Tropites subbullatus Liang p. 77 figs. One complete carapace, collection number PMC O 21 H 13/10/2019, Plate 1A. Description. D. Right lateral view of a complete carapace, PCM O FS56. They are carnivores. (2019b). Lateral view of a right valve, PCM O FS67. F: Polycope baudiCrasquin-Soleau and Grdinaru (1996). Museum fr Naturkunde, Leibniz Institute for Research on Evolution and Biodiversity, Berlin, Germany. sp. This could be a new species. 2. This species has a straight DB and presents a ridge at the dorso-median part of the RV. Dec 2016. 2018 Mockella muelleriBunza and Kozur (1971), Crasquin et al. In contrast, most ammonoids possessed, at comparable conch sizes, much smaller buccal apparatuses and hyponomes, suggesting a more passive life history with reduced mobility potential and reduced capacities for larger prey items. All three subdivisions-Lower, Middle, and Upper Triassic--are represented by calcareous deposits, aggregating approximately 4,000 feet in thickness. The evolution of the families and smaller groups of ammonites is followed through the various stages of the Lower Jurassic. No new specific names are proposed but ample use is made of open nomen- . Remarks.Hungarella siciliiensis n.sp. 2. This modern theory then suggests that life originated on Earth by means of a rather slow evolution of nonliving matter. Remarks. It is pointed out here that the sediments of the Mufara Basin at Monte Gambanera do not show vortex structures which were recognized in the Mufara Basin at Monte Scapello. In the study on the Mufara Formation (Crasquin et al., 2018) we attributed the specimens to the latter species. n.sp. 6). 1). Schematic palaeoenvironmental model for the late Carnian Mufara Formation basin (see also Fig. 2013 Acratia goemoeryi (Kozur, 1970); Monostori and Tth: 6-7, pl. 2013 Bairdia cassiana (Reuss, 1869); Monostori and Tth: 310, pl. M: Bairdia sp. E: Podocopida gen. sp. In this morphospace, Recent Nautilus has a marginal position, being one of the ectocochleate cephalopods with best properties for active life (capacity for handling large food items, rather good mobility). The Mufara Fm. 1970 Hiatobairdia subsymmetrica n. gen. The repository numbers are given as PMC (Palaeontological Museum Catania) O (Ostracods) X H (number of holotype) or X P (number of paratype) or FS X (Figured Specimen number) registration date. One complete carapace, collection number PMC O 79 P 13/10/2019 (Plate 1F). Based on the new material this determination was revised and they are attributed to Hungarella forelae. 8, figs. The ostracod assemblage doesnt yield any evidence of deep marine taxa both at Mt. nov. Massive carapace with a symmetric triangular shape; quite symmetric relative to H max; shape of left and right valves similar; LV is significantly larger than RV and radius of curvature of PB smaller than anterior one; LV overlaps RV all around the carapace with minimum at PVB; maximum of H located in front of or at mid L; maximum of L at mid H or a little below; VB quite straight; presence of a very fine flattening all around the AB of RV in blade shape; small spine more or less distinct at PVB of RV; dorsal view biconvex with valves almost symmetric in shape and W max at or just behind mid L; surface seems to be smooth. n.sp. Synthesis of the palaeoenvironmental model and evolution Description. The third genus, Ogmoconchella was introduced by Grndel (1964) and emended by Michelsen (1975) mainly due to the presence of a spine at PVB. 28, figs. This unit, outcropping in the southern slopes of the mount, mainly consists of dark grey pelites, which locally contain rare ammonites, with rare interbeds of fossiliferous calcarenites and fibrous calcite with Halobia spp. Right lateral view of a complete carapace, PCM O FS54. One complete carapace and two LV. Diversity of ostracod families from the Tropites dilleri zone represented by the number of genera (A) and species (B) in the samples of Mount Scalpello (data from Crasquin et al., 2018). In red: right valves; in blue left valves. 3) (Carrillat, 2001; Carrillat and Martini, 2009). Remarks. Resources https#:wwwbritannicacomanimalTropites . Dimensions. E: holotype, lateral view of a right valve, PMC O 26 H 13/10/2019; F: paratype, lateral view of a left valve, PMC O 82 P 13/10/2019. D: Bektasia sp. Sexual dimorphism present, expressed by the thickness of the posterior part of the carapace in heteromorphs. deformataKollmann (1963); Crasquin et al. 6K-L. Etymology. 10U, Dimensions. This species is extinct. The Mufara Basin was a site of rapid and intense sedimentation probably linked to rapid bottom currents which, sometimes, displaced and transported (also in vivo) microfaunas from more superficial neighbouring environments. 2013 Polycope baudi Crasquin and Grdinaru 1996; Sebe et al. Choi, YunJi 1971 Simeonella brotzenorum norica n.sp. cf. 2018 Bairdia cf. Occurrence. Genus Renngartenella Schneider 1957 (inMandelstam et al., 1957), Renngartenella sanctaecrusisKristan-Tollmann (1973). 1G. 1, fig. Holotype. Bulletin de la Socit Gologique de France (2020) 191 (1): 36. Lateral view of a complete carapace, PCM O FS72. 1991 Acratia sp. Keywords: Carnian stage, ammonoids, zones, Northeaste rn Russia DOI: 10.11 34 /S 1819714019 06 00 58 O: Bairdia sp. The species name refers to Sicily where the locus typicus is located. and OgmoconchaTriebel (1941) as synonyms (Moore, 1961; Anderson, 1964). A great confusion exists in the systematics of Late PermianTriassic Healdiidae genera HungarellaOgmoconchaOgmoconchella. Etymology. Massive stocky carapace with a symmetric triangular shape; quite symmetric relative to H max; general shape of valves similar, but LV is significantly larger than RV and radius of curvature of PB smaller than anterior one; LV overlaps RV all around the carapace with minimum at PVB; maximum of H located at mid L or in front of mid L; maximum of L at mid H or a little belowmid H; VB quite straight; presence of a very fine flattening at AB of RV in blade shape and a spine located near the maximum of convexity of AB; two more or less distinct spines at PVB of RV; one spine at AB of LV; dorsal view biconvex with valves almost symmetric in shape and W max at or just behind mid L; surface seems to be smooth. } monostoriiForel and Grdinaru (2018). Hebdon, Nicholas 1921, 1971 Bairdiacypris triassica n.sp. Morphologically, the left and right valves of Hungarella are asymmetrical contrary to those of Ogmoconcha (Kristan-Tollmann, 1977a, b; Lord, 1982): in the absence of observable central muscle scars, all Triassic occurrences of Ogmoconcha and Ogmoconchella are re-attributed to the genus Hungarella. Genus HiatobairdiaKristan-Tollmann (1970), Type species: Hiatobairdia subsymmetricaKristan-Tollmann (1970), Hiatobairdia subsymmetricaKristan-Tollmann (1970). 1971a Triebelina (Mirabairdia) pernodosa illyrica n.spp. The new species is also close to Kerocythere tricostata Forel, 2017 from the middle Carnian of southern Tauride-Anatolide platform (Turkey; Forel et al., 2017). Bairdia sp.1 sensu Crasquin, Sciuto, Reitano, 2018, 2018 Bairdia sp. Our editors will review what youve submitted and determine whether to revise the article. The percentage of Bairdiidae decreases in favour of two families being absent before, Cytheruridae and Limnocytheridae which include typical genera of nearshore environments such as Simeonella, Mockella and Kerocythere. It shows up in the Triassic period which is about 251 to 201 mya. H=486533m; L=840948m. Dimensions. Occurrences. In the Monte Gambanera area, the outcropping sediments are assigned to the Neo-Tethyan Mesozoic-Cenozoic complex which belongs to the so-called Imerese Succession (Lentini et al., 1987; Montanari, 1987; inter alias) or Imerese-Sicano Succession (Carrillat and Martini, 2009; Di Paolo et al., 2012).The Imerese Basin, where these sedimentary successions were deposited, was delimited by the . 6, fig. cf. TuvalianCarnian, Tropites subbullatus/Anatropites spinosus zones, Monte Gambanera, Central-Eastern Sicily, Italy (this work). Type species Bairdia problematicaMhes (1911). This biodiversity testifies normal marine conditions and absence of environmental stress. A species of Petasobairdia with a long reticulated carapace and elongated nodes at ADB and PDB of both valves. Content may require purchase if you do not have access.). 1979 Hiatobairdia subsymmetricaKristan-Tollmann (1970); Kristan-Tollmann et al. is similar to Bairdia deformataKollmann (1963) from the Rhaetian of Austria. 2018 Bairdia cf. Tropites, genus of extinct cephalopods (animals similar to the modern squid and octopus but with an external shell) found as fossils in marine rocks of the Late Triassic Period (from 230 to 208 million years ago). 5.2. Material. Diagnosis. Diversity of ostracod families from the Tropites subbullatus/Anatropites spinosus zones represented by number of genera (A) and species (B) in the samples of Mount Gambanera. 4FH. Lateral view of a complete carapace, PCM O FS73. Download scientific diagram | Diversity of ostracod families from the Tropites subbullatus/ Anatropites spinosus zones represented by number of genera (A) and species (B) in the samples of Mount . ; Bunza and Kozur: 4-5, pl. ; Crasquin-Soleau and Grdinaru: 77-78, pl. 1, fig. 9). Right lateral view of a complete carapace, PCM O FS52. differs from P. kristanaeKollmann (1960) from the RhaetianEarly Jurassic of Austria (Kollmann, 1960, 1963) and the late Carnian of Sicily (Crasquin et al., 2018) by its reticulated carapace and the RV being clearly smaller than LV. Occurrence.Tropites subbullatus/Anatropites spinosus zones, Monte Gambanera, Central-Eastern Sicily, Italy (this study). Occurrence. (complete carapace) H=462m; L=800m. 7HJ. Late Norian, Zlambach Formation, Austria (Kollmann, 1963; Zorn, 2010); Anisian, Felsrs, Hungary (Monostori, 1995); Carnian, Nosztori Valley, Hungary (Szles, 1965); Ladinian-Carnian, Balaton Highland, Hungary (Monostori and Tth, 2013, 2014); TuvalianCarnian, Tropites subbullatus/Anatropites spinosus zones, Monte Gambanera, Central-Eastern Sicily, Italy (this study). The Triassic forms belong to Hungarellinae Kristan-Tollmann (1971) and Liassic ones to the subfamily Pseudohealdiinae Grndel (1964) (Kristan-Tollmann, 1971). A: Paracypris? L: Acratia maugeriiCrasquin et al. 1, 3, 5, 6; pl. 1; Ogg 2012 . monostorii Forel and Grdinaru (2018). 2014 Bairdia cassiana (Reuss, 1869); Monostori and Tth: 26, pl. Scale bars=200m except P-Q, R=100m. The PB has a very small radius of curvature. 1869 Bairdia cassiana (Reuss, 1869); Gmbel: 180, pl. Dimensions. Les spcimens, silicifis, sont relativement abondants, bien prservs et les plus souvent retrouvs sous formes de carapaces compltes.
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