Because resources are limited in nature, organisms with heritable traits that favor survival and reproduction will tend to leave more offspring than their peers, causing the traits to increase in frequency over generations. Tuvalian, Tropites subbullatus/Anatropites spinosus zones, Monte Gambanera, Central-Eastern Sicily, Italy (this study). One complete carapace and one broken carapace. 5.2. Occurrences. 1G. The evolution classification, mode of life and geological usefulness of a major fossil group, 66-100: Tozer E. T. (1994) Canadian Triassic Ammonoid Faunas, Geological Survey of Canada Bulletin 467, 1-663: GBIF/Paleo Database - via The Interim Register of Marine and Nonmarine Genera . 10. 13. Plus de 200 spcimens ont t identifis. 2014 Bairdia cassiana (Reuss, 1869); Mette et al. H=269296m; L=446488m. 35, figs. 1968 Simeonella brotzenorum n.sp. 3. D: Bektasia sp. 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 (. 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. 1990 Simeonella brotzenorumSohn (1968); Gerry et al. Material. EOL has data for 10 attributes, including: Harvard UNiversity, Museum of Comparative Zoology, http://www.iucnredlist.org/technical-documents/categories-and-criteria, http://eol.org/schema/terms/body_symmetry, http://purl.obolibrary.org/obo/PATO_0001324, http://eol.org/schema/terms/EcomorphologicalGuild, http://www.marinespecies.org/traits/Nekton, http://www.marinespecies.org/traits/wiki/Traits:Nekton, http://eol.org/schema/terms/activelyMobile, http://eol.org/schema/terms/fossilOccPBDB, http://eol.org/schema/terms/TypeSpecimenRepository, http://biocol.org/urn:lsid:biocol.org:col:33791. Tropites is characterized by a distinctive, easily recognizable, globular shell within a central keel. 1991 Acratia sp. They are carnivores. Order Metacopida Sylvester-Bradley (1961), Suborder Metacopina Sylvester-Bradley (1961). This species is extinct. No new specific names are proposed but ample use is made of open nomen- . E-F: Ptychobairdia leonardoi n.sp. 3. (2018). Cole, Selina R. 1973 Renngartenella sanctaecrucis Kristan-Tollmann; Kristan-Tollmann and Hamedani: 215, 217219, pl. The mechanism that Darwin proposed for evolution is natural selection. Type species Petasobairdia bicornutaChen and Shi (1982). 227221132118) and PiaCeRiPiano Incentivi per la Ricerca di Ateneo 2020-22 linea di intervento 2. In 2013, Monostori and Tth, described Acratiagoemeryi from Ladinian neritic sediments of a borehole in Hungary. Some authors consider HungarellaMhes (1911) (which has no type materialGerry and Kozur (1973); but the Hungarian original material in under revision by E. Tth, pers. In memory and honour of Dr. Andr Crasquin, father of the first author. Keywords: Carnian stage, ammonoids, zones, Northeaste rn Russia DOI: 10.11 34 /S 1819714019 06 00 58 2014 Renngartenella sanctaecrucisKristan-Tollmann (1973); Monostori and Tth: 29-30, pl.3, figs. ; Bunza and Kozur: 4-5, pl. Left lateral view of a complete carapace, PCM O FS65. Lateral view of a complete carapace, PCM O FS72. . Bairdioid carapace, quite short (H/L=0.60.7), LV overlaps RV all around the carapace with minimum at AB and anterior part of VB; LV: all the dorsal part regularly arched; AB with large radius of curvature with maximum at mid-H, VB almost straight; BP with large radius of curvature with maximum at lower 1/3 of H; PDB arched; RV: DB straight, ADB straight with an angulation of 145150 against DB; AB with large radius of curvature; AVB and PVB flattened laterally in its very external part and with very fine crenulation; VB slightly concave; bairdioid beak quite absent; PDB straight with an angle of 125130 with DB; Presence of a shoulder on medio-dorsal part of LV; carapace biconvex and quite slender in dorsal view. 10) within the deepest and most distal part of a vast continental shelf where the carbonate platforms Panormide, Trapanese, Saccense were located. Bulletin de la Socit Gologique de France 2020;; 191 (1): 36. doi: https://doi.org/10.1051/bsgf/2020031. Biological evolution and phylogeny: Evolution explains how new species of organisms arise or how existing organisms adapt to new conditions over time. Anisian, Western Carpathians, Slovakia (Salaj and Jendrejakova, 1984; Kozur, 1971a); Anisian, Balaton Highland, Hungary (Kozur, 1971a); Ladinian, Dolomites, South Tirol, Italy, (Kristan-Tollmann, 1971); Ladinian, Northern Calcareous Alps, Cassian beds, Austria (Kollmann, 1963); Ladinian E-Bakony, Hungary (Monostori and Tth, 2014); TuvalianCarnian, Tropites subbullatus/Anatropites spinosus zones, Monte Gambanera, Central-Eastern Sicily, Italy (this study). Tropites subbullatus (Hauer, Reference Hauer 1849): Adult modifications play an important role in Triassic ammonoids, and hence this species was chosen as an example. 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.). A proposed map of the Earth in the Late Triassic Period (220 million years ago). Thanks are due to Mr. Alfio Viola (Electronic Microscopy Laboratory, University of Catania) for SEM photos assistance. Monte Gambanera is a modest relief located in central eastern Sicily (F 269 III NE of the Carta d'Italia alla scala 1:25 000) to the southeast of the town of Castel di Iudica (EN), about 40 kilometres west of Catania ().Structurally Monte Gambanera is part of the "Monte Judica Units" (Lentini et al., 1987) and is inserted along the northern . 6M. 2, figs. Holotype. Type species Bairdia problematicaMhes (1911). Q: Bairdia sp. 2014 Bairdia cassiana (Reuss, 1869); Monostori and Tth: 26, pl. The occurrence of Acratia maugerii in the present material confirms that Acratia occurs in neritic environments of the Carnian. Ghaderi, Abbas R: Simeonella brotzenorumSohn (1968). One complete carapace, collection number PMC O 28 H 13/10/2019 (Plate 2M). further contributions to Triassic conodont evolution and stratigraphical distribution, but their studies are restricted . (sexual or ontogenic). Fossilworks: Tropites subbullatus. redcarensis (Blake, 1876), Occurrence. 2. 2013 Polycope baudi Crasquin and Grdinaru 1996; Sebe et al. Remarks.Ptychobairdia leonardoi n.sp. : 134, fig. Occurrence. One complete carapace, collection number PMC O 84 P 13/10/2019 (Plate 2N). In blue: left valves; in red: right valves. D. Right lateral view of a complete carapace, PCM O FS56. 16. see synthesis Tab. Lateral view of a right valve, PCM O FS71. 1958 Bairdia cassiana (Reuss, 1869); Styk: 171, fig. n.sp. Quite all the specimens are preserved with the complete carapace. indet. 6/16. 4) presents some morphological variability: overlap less important, at RV: the blade is located only at the ventral part of AB and occurrence of a small spine at the upper part of it, at LV: anteroventral blade seems to be also present. 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. Etymology. cf. 2, figs. (complete carapace) H=311m; L=806m. Palaeoecological Research Group contribution no456. TuvalianCarnian, Tropites dilleri zone (Crasquin et al., 2018) and Tropites subbullatus/Anatropites spinosus zones, Monte Gambanera, Central-Eastern Sicily, Italy (this study). Dimensions. One complete carapace, collection number PMC O 25 H 13/10/2019 (Plate 2C). A species of Hungarella with triangular shape carapace, a posteroventral spine at RV, delicate flattening in blade shape at anterior border of RV. Lateral view of a complete carapace, PCM O FS73. 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). Pl 2, fig 6 Occurrence. 1, figs. 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Fossilworks: Tropites (Paratropites) Tropites (Paratropites) Mojsisovics 1893 (ceratite) Cephalopoda - Ammonoidea - Tropitidae. Tropites is a genus of Cephalopods in the family Tropitidae. 1978 Bairdia cassiana (Reuss, 1869); Kristan-Tollmann: 81, pl. Genus HiatobairdiaKristan-Tollmann (1970), Type species: Hiatobairdia subsymmetricaKristan-Tollmann (1970), Hiatobairdia subsymmetricaKristan-Tollmann (1970). B: Mirabairdia pernodosa Tollmann, 1963. (complete carapace) H=533m; L=948m. Although the number of specimens is very low, the diversity is quite high with 10 determined families (plus 2 undetermined), 17 genera and 37 species. 2, figs. 1991 Bairdia cassiana (Reuss, 1869); Kristan-Tollmann et al. Type species: Reubenella avnimelechiSohn (1968). ; Crasquin et al. The third genus, Ogmoconchella was introduced by Grndel (1964) and emended by Michelsen (1975) mainly due to the presence of a spine at PVB. Monte Gambanera is a modest relief located in central eastern Sicily (F 269 III NE of the Carta dItalia alla scala 1:25000) to the southeast of the town of Castel di Iudica (EN), about 40kilometres west of Catania (Fig.
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