Chemosymbiotic bivalves from Miocene methane-seep carbonates in Italy

2017 ◽  
Vol 91 (3) ◽  
pp. 444-466 ◽  
Author(s):  
Steffen Kiel ◽  
Marco Taviani
Keyword(s):  
New Species ◽  
Deep Water ◽  
Late Miocene ◽  
Middle Miocene ◽  
New Genus ◽  
Methane Seep ◽  
Italian Apennines ◽  
Eleven Species

AbstractEleven species of chemosymbiotic bivalves are reported from middle to late Miocene methane seep deposits (‘Calcari aLucina’) in the Italian Apennines, including seven new species and one new genus. The new species areBathymodiolus(s.l.)moroniaeandB. (s.l.)miomediterraneusamong the Bathymodiolinae andArchivesica aharoni,A.apenninica,A.strigarum, and ‘Pliocardia’italicaamong the Vesicomyidae; specimens from the middle Miocene of Deruta are reported asArchivesicaaff.aharoni.Samiolus iohannesbaptistaenew genus new species is introduced for an unusual mytilid with a commarginally ribbed surface, which might be the first non-bathymodiolin mytilid obligate to the seep environment. The two large lucinid species from which these deposits derived their informal name ‘Calcari aLucina’ are identified asMeganodontia hoernea(Des Moulins, 1868) andLucinoma perusina(Sacco, 1901). WithChanellaxinussp., we report the first thyasirid from a Neogene deep-water seep deposit in Italy and the first fossil occurrence of this genus.

A new genus and species of Sieblosiidae from the Middle Miocene of Germany (Odonata: Epiproctophora)

Zootaxa ◽  
2012 ◽  
Vol 3582 (1) ◽  
pp. 64
Author(s):  
ANDRÉ NEL ◽  
GUNTHER FLECK
Keyword(s):  
Late Miocene ◽  
Middle Miocene ◽  
New Genus ◽  
New Genus And Species ◽  
The Third

Germanostenolestes lutzi, new genus and species of Sieblosiidae is described from the Middle Miocene of Öhningen (Germany). It probably belongs to the clade (Paraoligolestes + (Parastenolestes (Germanolestes + Stenolestes))) sensu Nel et al. (2005). It is the third representative of the Sieblosiidae described from this outcrop, showing that this family was still quite diverse in the Middle-Late Miocene.

scholarly journals A late Burdigalian bathyal mollusc fauna from the Vienna Basin (Slovakia)

2011 ◽  
Vol 62 (3) ◽  
pp. 211-231 ◽  
Author(s):  
Mathias Harzhauser ◽  
Oleg Mandic ◽  
Jan Schlögl
Keyword(s):  
New Species ◽  
Deep Water ◽  
Middle Miocene ◽  
Mediterranean Area ◽  
First Record ◽  
Early Miocene ◽  
Vienna Basin ◽  
Poor Knowledge ◽  
Central Paratethys ◽  
Aquitaine Basin

A late Burdigalian bathyal mollusc fauna from the Vienna Basin (Slovakia)This is the first record of a bathyal mollusc fauna from the late Early Miocene of the Central Paratethys. The assemblage shows clear affinities to coeval faunas of the Turin Hills in the Mediterranean area and the Aquitaine Basin in France. The overall biostratigraphic value of the assemblage is hard to estimate due to the general very poor knowledge of Miocene bathyal faunas. Several species, however, are known from deep water deposits of the Middle Miocene Badenian stage as well. This implies Early Miocene roots of parts of the Middle Miocene deep water fauna and suggests a low turnover for bathyal mollusc communities at the Early-Middle Miocene boundary. The nassariid gastropodNassarius janschloegliHarzhauser nov. sp. and the naticid gastropodPolinices cerovaensisHarzhauser nov. sp. are introduced as new species.

scholarly journals QFL AND LITHO FACIES: PREDICTING RESERVOIR QUALITY OF THE MIDDLE MIOCENE DEEP-WATER FACIES AT KUTEI AND NORTH MAKASSAR BASINS

2021 ◽  
Vol 36 (1) ◽  
Author(s):  
Kuntadi Nugrahanto Nugrahanto ◽  
Ildem Syafri ◽  
Budi Muljana
Keyword(s):  
Deep Water ◽  
Late Miocene ◽  
Middle Miocene ◽  
Side Wall ◽  
High Energy ◽  
Reservoir Quality ◽  
Burial Depth ◽  
Rock Samples ◽  
Water Facies

As we may all be aware the oil and gas wellbores offshore Kutei and North Makassar have not optimally penetrated the objective strata, which is the Middle Miocene’s deep-water reservoirs.  Therefore, evaluating the quality of these reservoirs with onshore dataset then comparing them with the proven Late Miocene’s deep-water producing reservoirs had been very fundamental.  The study focuses on the assessment of QFL and sandstones litho-facies based on the rock samples from conventional-core and side-wall core, and well-logs data from forty wells onshore and offshore.  These rock samples are bounded by the key biostratigraphy intervals of M40M33, M45M40, M50M45 (Middle Miocene), and M65M50, M66M65, M70M66, M80M70 (Late Miocene).  Subdivisions of the reservoirs considered the sandstone litho facies, NTG ratio, sorting, and grain size, to come up with five groups in the Middle Miocene deltaic facies: FLU_SX, DC_SX, DC_SM, DC_SM, and DF_SC; and four groups in the Late Miocene deep-water facies: SSWS, MSWS, SSPS, and MSPS.  Core-based porosity and permeability further explain the relationship between the reservoir quality with the sandstones’ composition and litho facies, and concluded that high-energy depositional system is mainly associated with the FLU_SX, DC_SX, SSWS and MSWS being the reservoir with best quality.  Oppositely, the DF_SC, SSPS, and MSPS are classified the reservoir with worst to none quality.  A cross plot between core-based porosity and maximum burial depth is able to postulate the relational trend of decreasing reservoir quality with deeper depth.

scholarly journals A new genus and species of spionid polychaete (Annelida, Spionidae) from a deep-water cold seep site in the Eastern Mediterranean Sea off Turkey

Zoosymposia ◽  
2020 ◽  
Vol 19 (1) ◽  
pp. 121-134
Author(s):  
JAMES A. BLAKE ◽  
PATRICIA A. RAMEY-BALCI
Keyword(s):  
New Species ◽  
Mediterranean Sea ◽  
Deep Water ◽  
Deep Sea ◽  
New Genus ◽  
Microbial Mats ◽  
Eastern Mediterranean ◽  
Cold Seep ◽  
New Genus And Species ◽  
Eastern Mediterranean Sea

A new spionid polychaete was discovered in deep-sea sediments in the eastern Mediterranean Sea during an expedition by the Ocean Exploration Trust. Specimens were collected by the E/V Nautilus in August 2012 off Turkey, at a depth of 2216 m on the Anaximander Seamount at the Amsterdam mud volcano site. Cores were taken from sediments covered with microbial mats. The new species belongs to the Pygospiopsis-Atherospio Group, which has unusual neuropodial hooks, modified neurosetae in some anterior setigers, and branchiae in middle body segments that are broad, flattened, and fused to the dorsal lamellae. The new species is assigned to a new genus and species, Aciculaspio anaximanderi n. gen., n. sp., and is unusual in having a reduced setiger 1 lacking notosetae; well-developed pre- and postsetal lamellae that encompass the neurosetae and notosetae; notopodial lamellae free from the branchiae in anterior setigers that become fused and flattened in middle and posterior segments; unidentate hooded hooks in both noto- and neuropodia; neuropodial spines in setigers 4–10; and a pygidium with three anal cirri. Aciculaspio anaximanderi n. gen., n. sp. is the first species in the Atherospio-Pygospiopsis Group collected from a deep-water cold seep habitat.

Bathyferula, a new Caribbean deep-water turrid genus (Gastropoda: Turroidea), with description of a large-sized new species

Zootaxa ◽  
2012 ◽  
Vol 3158 (1) ◽  
pp. 65
Author(s):  
PETER STAHLSCHMIDT ◽  
DOMINIQUE LAMY ◽  
KOEN FRAUSSEN
Keyword(s):  
New Species ◽  
Deep Water ◽  
New Genus ◽  
Broad Sense ◽  
A New Species

The examination of five specimens of a turrid species from various Caribbean locations led us to the recognition of a new species and genus. Although the group of turriform gastropods comprise already about 340 valid genera and subgenera (Taylor et al. 1993) we have not been able to find a genus that, even in a very broad sense, could accommodate the new species. Therefore, we propose the new genus Bathyferula.

Multisentis myrmecobius, gen. et. sp. nov. (Acanthocephala: Oligacanthorhynchidae), from the Numbat, Myrmecobius fasciatus, and a Key to Genera of the Oligacanthorhynchidae

1997 ◽  
Vol 11 (2) ◽  
pp. 301 ◽  
Author(s):  
Lesley R. Smales
Keyword(s):  
New Species ◽  
Life Cycle ◽  
Late Miocene ◽  
Definitive Host ◽  
New Genus ◽  
The Family ◽  
Host Parasite Relationship ◽  
Parasite Relationship ◽  
Host Parasite ◽  
A New Species

A new genus and a new species of acanthocephalan are described from the numbat Myrmecobius fasciatus, a termite-eating marsupial from south-western Australia. Multisentis myrmecobius belongs to the family Oligacanthorhynchidae and a key to the genera of this family is given. The life cycle is presumed to involve termites as the intermediate host. The definitive host-parasite relationship is assumed to have evolved since the origins of M. fasciatus from ancestral marsupial forms before the late Miocene.

scholarly journals Small early Miocene listriodont suid (Artiodactyla: Mammalia) from Sabuncubeli (Manisa, SW Anatolia), Turkey

2020 ◽  
Vol 76 (2) ◽  
pp. 325-337
Author(s):  
Martin Pickford ◽  
Tanju Kaya ◽  
Erhan Tarhan ◽  
Derya Erylmaz ◽  
Serdar Mayda
Keyword(s):  
Late Miocene ◽  
Middle Miocene ◽  
New Genus ◽  
Morphological Features ◽  
Early Miocene ◽  
New Genus And Species ◽  
The Family

Turkey is known for the wealth of fossil suids found in deposits of middle Miocene, late Miocene and Plio-Pleistocene levels but material of this family from early Miocene and Palaeogene deposits is rare in the country, one of the few published occurrences being from Şemsettin (Kumartaş Formation, MN 4, Çankiri-Çorum Basin). For this reason, it is interesting to record the presence of small suid remains in the Soma Formation at Sabuncubeli (Manisa, SW Anatolia) in deposits correlated to MN 3 (early Miocene) and thus the earliest known Turkish members of the family. The upper and lower teeth are herein attributed to a new genus and species (Prolistriodon smyrnensis) of Listriodontinae because, in a nascent way, they show a suite of derived morphological features such as upper central incisors with apical sulci, and upper molars with lingual precrista, found in listriodonts but not in Kubanochoerinae, Palaeochoerinae, Tetracondontinae, Hyotheriinae, Namachoerinae, Cainochoerinae or Suinae.

Tortonian Conidae of Crete. New species revealed under UV light. Subgenera Conus (Lautoconus), Conus (Plagioconus) and a possible new subgenus.

2021 ◽  
Author(s):  
Christos Psarras ◽  
Efterpi Koskeridou ◽  
Didier Merle
Keyword(s):  
New Species ◽  
Middle Miocene ◽  
Systematic Approach ◽  
Uv Light ◽  
Natural Light ◽  
New Subgenus ◽  
Extant Species ◽  
The Family ◽  
Colour Patterns ◽  
Eleven Species

<p>Conidae is a very diverse family of carnivorous gastropods with over 900 extant species, that present beautiful colour patterns. These patterns can be useful to biologists for the systematic approach, but lack usually in fossil samples, when they are only observed in natural light. Therefore conid species were difficult to distinguish.<br>To resolve that problem, we use ultraviolet light to reveal the colour patterns of these fossil shells. Here, we present the second part of a PhD project that attempts to clarify the diversity of the Tortonian Conidae from Crete, Greece. The first part of this project already revealed eleven species of <em>Conilithes</em> Swainson, 1840 and <em>Conus (Kalloconus)</em> da Motta, 1991 five of them being new. In the second part, we found seventeen species, of those seven are considered as new. Among them, ten are attributed to <em>Conus (Lautoconus)</em> Monterosato, 1923 and three in <em>Conus (Plagioconus)</em> Tucker & Tenorio, 2009. Finally, a group of four species with special characteristics is discussed and is proposed as a new subgenus.<br>This project will greatly enrich the knowledge of the family in  the Tortonian of Eastern Proto-Mediterranean. The results will be compared to similar faunas from the Middle-Miocene to Pliocene of Europe, in order to assess the biogeography of this family.</p>

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