5). The assemblage is composed of 200 specimens belonging to 10 families (plus two undetermined families), 19 genera and 37 species. P: holotype, right lateral view of a complete carapace, PMC O 29 H 13/10/2019; Q: paratype, right lateral view of a complete carapace, number PMC O 85 P13/10/2019. The ostracod specimens were examined and measured under a stereomicroscope, then photographed under an LMU Tescan Vega II SEM. They belong to the families Healdiidae, Bairdiidae, Bythocyprididae, Acratiidae, Cytheruridae, Limnocytheridae, Candonidae, Cavellinidae, Polycopidae and Thaumatocyprididae. I: Bairdia cassiana (Reuss, 1869). ; Kozur: 5-6, figs. 1 in Crasquin and Horne). Lateral view of a complete carapace, PCM O FS73. In the deep sea, the specimens are thin shelled, elongate with long spines (e.g. This species is quite original and differs from all other ones by the specific characters (flattened AB and PB, and a ventral ridge along the posterior part of the VB and PB.). Dimensions. 11, figs. 3/1. By continuing to use our website, you are agreeing to our, https://creativecommons.org/licenses/by/4.0, urn:lsid:zoobank.org:act:DE0CE7FE-10E0-4F8E-8DC8-C829D3D5485B, urn:lsid:zoobank.org:act:942B09CB-1014-4CD3-A244-4EC52F0633B9, urn:lsid:zoobank.org:act:B42972B5-54DF-4435-9C2B-E3DD46610140, urn:lsid:zoobank.org:act:DAB3F723-F5D1-40B1-B6BD-CC37BC92DD82, urn:lsid:zoobank.org:act:FF7725BE-043C-4295-AD53-9023B9321380, urn:lsid:zoobank.org:act:FC93D70B-B0C0-4898-85BC-A4F3DA21E560, urn:lsid:zoobank.org:act:84DA8AAD-D794-4F58-A432-531D6DE12EBF, urn:lsid:zoobank.org:act:E47E2789-5811-4B0E-B05C-9C5E6AAC6216, urn:lsid:zoobank.org:act:4ADD818E-6B13-4162-B348-1A807B0CF100, urn:lsid:zoobank.org:pub:5BB71015-F9DF-4353-A331-208A98705E11, Copyright 2023 Socit Gologique de France. monostoriiForel and Grdinaru (2018). The specimens with massive shells and small spines are neritic inhabitants (Plate 1A1D) of relatively nearshore muddy conditions. The species name refers to Sicily where the locus typicus is located. 2014 Bairdia cassiana (Reuss, 1869); Mette et al. Tropites torquillus Mojsisovics 1893 (ceratite) Cephalopoda - Ammonoidea - Tropitidae. Right lateral view of a complete carapace, PMC O FS60. H=600615m; L=885953m. Diagnosis. 1996 Polycope baudi n.sp. Holotype. This study aims to reconstruct the palaeogeographic evolution of north-western and central Sicily during the deposition of the Upper Triassic Mufara Fm. A. View Render date: 2023-04-30T12:43:02.109Z TuvalianCarnian, Tropites dilleri zone (Crasquin et al., 2018) and Tropites subbullatus/Anatropites spinosus zones, Monte Gambanera, Central-Eastern Sicily, Italy (this study). This species is characterized by its triangular shape, the flattening of the ventral borders and the reticulated surface. In this stratigraphic horizon, cropping out near masseria Balconere at the west side of Mount Gambanera, two levels consisting of slightly silty clays have been sampled (Fig. Occurrence. Omissions? 14, 68, 1222. All the specimens are stored in the Palaeontological Museum of the University of Catania. 2018 Bairdia cf. 35, figs. Paratype. 1, fig. 1-2. 1958 Bairdia cassiana (Reuss, 1869); Styk: 171, fig. : 134, figs. Late Triassic (Tuvalian - Carnian, Tropites subbullatus/Anatropites Material. 2019a Bairdia cassiana (Reuss, 1869), Forel et al., in press, figs. Carapace with massive coarse reticulation, flattened laterally at AB and PB; DB straight at both valves and parallel to VB; ontogenic modifications of DB: at RV with nodules or blade at biggest specimens, at LV development of shoulders at each extremities in largest specimens; AB and PB with small radius of curvature, flattened laterally and covered by a fine reticulation; VB straight to slightly concave, with development of adventral structure; presence of a big node in median part of the carapace. 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. 2020. Holotype. Within the Tropites subbullatus zone, this assemblage seems to represent the subzone of T. dilleri. 1, figs. Tropites subbullatus Left lateral view of a complete carapace, PCM O FS65. bilaterally symmetric. One complete carapace, collection number PMC O 77 P 13/10/2019, Crasquin et al. Full Document. Remarks. They are kind of like modern day octopus or squid but with an external shell. An ecomorphospace for the Ammonoidea - Cambridge Core t. e. Index fossils (also known as guide fossils or indicator fossils) are fossils used to define and identify geologic periods (or faunal stages). One complete carapace and one broken carapace. Right lateral view of a complete carapace, PCM O FS62. How many. (PDF) A New Ammonoid Zone of the Upper Carnian Substage - ResearchGate They write new content and verify and edit content received from contributors. 3-4. 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. Remarks.Ptychobairdia iudicaensis n.sp. The material is housed in the Palaeontological Museum of the University of Catania. 1996 Bairdia (Rectobairdia) garciai n.sp. Occurrence. This species of Bairdia is characterized by the BD which is underlined by a blade, and by the reticulation of the carapace. TuvalianCarnian, Tropites subbullatus/Anatropites spinosus zones, Monte Gambanera, Central-Eastern Sicily, Italy (this work). 1, fig. 1, fig. Diagnosis. A: Hiatobairdia sp. Origin and Evolution of Life Activity Introduction A virtual tour is a way to inform someone of the facts and details about a location or object that would otherwise be inaccessible. Remarks. 2, fig. M: holotype, lateral view of a right valve, PMC O 28 H 13/10/2019; N: paratype, lateral view of a left valve, PMC O 84 P 13/10/2019. Parent taxon: Tropites according to Mojsisovics 1893. 5. 5, figs. Description. Right lateral view of a complete carapace, PCM O FS69. 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. The Mufara Fm. (2018), fig. Occurrence. Although these genera are not dominant here, their presence testifies a shallowing of environment from the Tropites dilleri zone to the Tropites subbullatus/Anatropites spinosus zones. 9-10. 5, figs. Ostracods from Late Triassic (Tuvalian-Carnian) of Monte Gambanera, Sicily, Italy. E: Podocopida gen. sp. 2013 Polycope baudi Crasquin and Grdinaru 1996; Sebe et al. ; Bunza and Kozur: 5-6, pl. G-H: Petasobairdia jeandercourti n.sp. Stratigraphic series of Monte Gambanera, Sicily, Italy. The evolution of the families and smaller groups of ammonites is followed through the various stages of the Lower Jurassic. : 139, figs. Occurrences. fossils 1 .pptx - Tropites subbullatus Cecelia Klos Physical After the death of the specimens, the carapaces tend to open in a few hours (Guernet and Lethiers, 1989). Three species of Acratia from the Carnian of Karavanke Mountains, Solvenia, are figured in Forel et al. The Imerese Basin, where these sedimentary successions were deposited, was delimited by the Panormide Carbonate Platform to the west and the Trapanese Carbonate Platform to the east and south (Catalano and DArgenio, 1982; Montanari, 1987; Speranza and Minelli, 2014). The Healdiidae do also show a change of morphology with depth. Material. The repository number of the specimens are given in the systematic descriptions and/or in plate explanations. 2014 Renngartenella sanctaecrucisKristan-Tollmann (1973); Monostori and Tth: 29-30, pl.3, figs. H=525600m; L=575600m. In the Subfamily Hungarellinae, seven genera have been described so far: TriadiohealdiaKristan-Tollmann (1971); AneisohealdiaKristan-Tollmann (1971); LabratellaGramm (1970); HungarellaMhes (1911); OgmoconchellaGrndel (1964) emend Michelsen (1975); SignohealdiaKristan-Tollmann (1971); TorohealdiaKristan-Tollmann (1971). L: Bairdia sp. Alternative combination: Ammonites subbullatus, Belongs to Tropites according to X. L. Liang 1977, See also Hyatt and Smith 1905, Smith 1927 and Spath 1951, Sister taxa: Tropites (Paratropites), Tropites acutangulus, Tropites arthaberi, Tropites brockensis, Tropites bufonis, Tropites dieneri, Tropites dilleri, Tropites discobullatus, Tropites ehrlichi, Tropites fusobullatus, Tropites hessi, Tropites involutus, Tropites izardi, Tropites kalapanicus, Tropites keili, Tropites keiliformis, Tropites kellyi, Tropites mojsvarensis, Tropites morani, Tropites morloti, Tropites payeri, Tropites reticulatus, Tropites rotatorius, Tropites rothpletzi, Tropites schellwieni, Tropites shastensis, Tropites stantoni, Tropites stearnsi, Tropites torquillus, Tropites ursensis, Tropites welleri, Tropites wodani, Environments: carbonate (1 collection), marine (1), Triassic of China (1 collection), Indonesia (1), Total: 2 collections each including a single occurrence. Right lateral view of a complete carapace, PMC O FS61. 6, fig. Occurrence. Holotype. The fossil conchs of ammonoids provide valuable information about the life habits of this extinct group. 8, figs. 1, fig. Carapace long (H/L0.4), reticulated, strongly laterally compressed along AB, AVB, VB, PVB, PB; DB long and straight at both valves; presence of an elongated node at ADB and PDB of both valves; LV with two big horns with large base at each extremities of DB. However, for the time being we have not enough specimens to settle this question. One broken carapace, collection number PMC O 27 H 13/10/2019 (Plate 2G). We consider that these morphological variations could be the expression of ontogenic variations but some doubt remains. H=400440m; L=785882m. Three complete carapaces and one broken carapace. One complete carapace, collection number PMC O 29 H 13/10/2019 (Plate 2P). One left valve, collection number PMC O 82 P 13/10/2019 (Plate 2F). Tropites is characterized by a distinctive, easily recognizable, globular . 1963 Mirabairdia pernodosa n.sp. 1978 Bairdia cassiana (Reuss, 1869); Kristan-Tollmann: 81, pl. 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. 2I, 3C. One complete carapace, collection number PMC O 85 P 13/10/2019 (Plate 2Q). They are carnivores. The repository numbers are given as PCM (Palaeontological Museum Catania) O (Ostracods) FS X (Figured Specimen number) registration date. Etymology. 7). Abbreviations. This was a sea creature with a snail shell appearance because it's a shell with a spiral shape. The Tropites subbullatus is from the Triassic period, the time following one of history's most significant mass extinction events that left a mere tenth of the planet's species intact. 4, only fig. 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 . B: Mirabairdia pernodosa Tollmann, 1963. Choi, YunJi 1, figs 1113. Diagnosis. 15. is comparable with P. oberhauseriKollmann (1960) from the Rhaetian of Austria (Kollmann, 1960) and the CarnianNorian of Queen Charlotte Island, Canada (Arias and Lord, 2000). Dimensions. what are the total times for these periods, only do total time not all Time Span Scale Total Time Hadean Eon (Precambrian Time) 4.6 bya - 3.8 bya 460 cm - 380 cm . In fact the trip doesn't even get you onto dry land you're, Calculate the uncertainty associated with the following total distances (in m or km) traveled along your road-trip route, assuming the error or fuzziness associated with each time frame is 1% of the, To the Precambrian As we travel further back before the Paleozoic Era, we leave the time frame of fossils mostly behind. This species doesnt show the ventral group of ridges but has one ridge at the AD part of the carapace following the AB. The tropites would be found . G-H: Bairdia gambaneraensis n.sp. Remarks.Kerocythere dittainoensis n.sp. M: Bairdia sp. It revealed an ecomorphospace where life history traits can be tentatively assigned to species of the Ammonoidea. Paratype. Search for other works by this author on: Palaeoecological Research Group, Department of Biological, Geological and Environmental Science, Catania University, S. Crasquin et al., published by EDP Sciences, This is an Open Access article distributed under the terms of the Creative Commons Attribution License (. 2013 Bairdia cassiana (Reuss, 1869); Monostori and Tth: 310, pl. 5. Museum fr Naturkunde, Leibniz Institute for Research on Evolution and Biodiversity, Berlin, Germany. Dimensions. monostorii Forel and Grdinaru (2018). 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. 7O-P. Etymology. and Tuvalian to the Tropites subbullatus zone (Fig. The phylogeny and evolutionary history of tyrannosauroid dinosaurs A proposed map of the Earth in the Late Triassic Period (220 million years ago). : 147, pl. Hebdon, Nicholas In blue: left valves; in red: right valves. Early Carnian of South Tyrol, Italy (Tollmann, 1976; Kristan-Tollmann, 1978); Rhaetian of Austrian Alps (Kristan-Tollmann, 1970) and Central Iran (Kristan-Tollmann et al., 1979); TuvalianCarnian Tropites dilleri zone (Crasquin et al., 2018) and Tropites subbullatus/Anatropites spinosus zones, Monte Gambanera, Central-Eastern Sicily, Italy (this study). Bairdiacypris triassicaKozur (1971a, b, c), 1911 ?Bairdia silicula Jones; Mhs: 16-17, pl. Alternative combination: Ammonites subbullatus. differs from other species by the specific characters. ; Sohn: 23-24, pl. ; Kristan-Tollmann: 268, pl. 6, figs. Occurrence.Tropites subbullatus/Anatropites spinosus zones, Monte Gambanera, Central-Eastern Sicily, Italy (this study).
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