In situ formed and redeposited gypsum breccias in the Middle Miocene Badenian of southern Poland

1994 ◽  
Vol 94 (1-2) ◽  
pp. 153-163 ◽  
Author(s):  
Tadeusz Marek Peryt ◽  
Marek Jasionowski
Keyword(s):  
Middle Miocene ◽  
Southern Poland

scholarly journals VRTBY ICHNORODU GASTROCHAENOLITES JAKOŽTO ŽIVOTNÍ PROSTOR MLŽŮ Z LOKALITY BORAČ-PODOLÍ (KARPATSKÁ PŘEDHLUBEŇ, ČESKÁ REPUBLIKA)

2018 ◽  
Vol 25 (1-2) ◽  
Author(s):  
Jaroslav Šamánek ◽  
Radek Mikuláš ◽  
Nela Doláková ◽  
Šářka Hladilová
Keyword(s):  
Shallow Water ◽  
Water Transport ◽  
Middle Miocene ◽  
The State ◽  
Secondary User ◽  
Hiatella Arctica ◽  
Fossil Material ◽  
The Town ◽  
Hard Substrates

In 2015 the locality Borač-Podolí was newly examined. The locality is situated 8 km NW from the town of Tišnov. A large amount of shallow-water fossils of middle Miocene (Badenian) age was collected. The state of preservation of the material enabled us bivalve borings of ichnogenus Gastrochaenolites which were bored into colonies of hermatype corals and other calcareous hard substrates. In some of these borings, bivalves were found in situ. The borings were determined as Gastrochaenolites isp., Gastrochaenolites orbicularis, Gastrochaenolites lapidicus, Gastrochaenolites dijugus and Gastrochaenolites torpedo. The in situ bivalves were determined as Gastrochaena cf. intermedia, Rocellaria cf. dubia, Hiatella arctica and Cardita calyculata. The first three species probably represent primary borers while Cardita calyculata is probably a secondary user (squatter). Based on an analysis of fossil material, we can assume that borings were created aft er the death of corals during the repeated transport of these bioclasts. It led to colonizing of the whole surface of coral bioclasts. The bioclasts were then moved to deeper water. Transport to water with clay sedimentation enabled the preservation of the bivalves in situ in borings.

scholarly journals Herpetological phylogeographic analyses support a Miocene focal point of Himalayan uplift and biological diversification

2020 ◽  
Author(s):  
Wei Xu ◽  
Wen-Jie Dong ◽  
Ting-Ting Fu ◽  
Wei Gao ◽  
Chen-Qi Lu ◽  
...  
Keyword(s):  
Middle Miocene ◽  
Focal Point ◽  
Himalayan Region ◽  
The World ◽  
Early Paleocene ◽  
The Rich ◽  
Source Of Information ◽  
The Himalaya ◽  
Exact Timing

Abstract The Himalaya are among the youngest and highest mountains in the world, but the exact timing of their uplift and origins of their biodiversity are still in debate. The Himalayan region is a relatively small area but with exceptional diversity and endemism. One common hypothesis to explain the rich montane diversity is uplift-driven diversification–that orogeny creates conditions favoring rapid in situ speciation of resident lineages. We test this hypothesis in the Himalayan region using amphibians and reptiles, two environmental sensitive vertebrate groups. In addition, analysis of diversification of the herpetofauna provides an independent source of information to test competing geological hypotheses of Himalayan orogenesis. We conclude that the origins of the Himalayan herpetofauna date to the early Paleocene, but that diversification of most groups was concentrated in the Miocene. There was an increase in both rates and modes of diversification during the early to middle Miocene, together with regional interchange (dispersal) between the Himalaya and adjacent regions. Our analyses support a recently proposed stepwise geological model of Himalayan uplift beginning in the Paleocene, with a subsequent rapid increase of uplifting during the Miocene, finally give rise to the intensification of the modern South Asia Monsoon.

Redescription of two ghost shrimps (Decapoda: Axiidea: Callianassidae) from the Middle Miocene of the Central Paratethys: systematics, intraspecific variation, and in situ preservation

Zootaxa ◽  
2012 ◽  
Vol 3210 (1) ◽  
pp. 1 ◽  
Author(s):  
MATÚŠ HYŽNÝ ◽  
NATÁLIA HUDÁČKOVÁ
Keyword(s):  
Intraspecific Variation ◽  
Middle Miocene ◽  
Type Material ◽  
Central Paratethys ◽  
In Situ Preservation ◽  
Major Cheliped ◽  
Material Form

A redescription of two Middle Miocene burrowing ghost shrimps of the Central Paratethys, Callianassa brocchiiLőrenthey, 1897 and Callianassa pseudorakosensis Lőrenthey in Lőrenthey & Beurlen, 1929, is provided. Material form-ing the basis of this study comes from the Studienka Formation (lower 'Sarmatian', Serravallian) of the Slovak part of theVienna Basin and exhibits preservation allowing reassignment of the studied taxa to the genera Neocallichirus Sakai, 1988and Eucalliax Manning & Felder, 1991 respectively. The major cheliped of both species exhibits two distinct morphotypesinterpreted herein as possible sexual dimorpism. Several specimens of both taxa are preserved within the tube structuresand are interpreted as in situ preservation within the burrows. Type material of both studied taxa and additional collections from the roughly coeval strata of Hungary and Austria were also studied.

scholarly journals Middle Miocene (Badenian) macroinvertebrates from Pécs-Danitzpuszta (Mecsek Mts, SW Hungary)

2021 ◽  
Vol 151 (4) ◽  
pp. 329-334
Author(s):  
Alfréd Dulai ◽  
Tamás Henn ◽  
Krisztina Sebe
Keyword(s):  
Coral Reefs ◽  
Middle Miocene ◽  
Benthic Assemblages ◽  
Brackish Lake ◽  
Lake Pannon ◽  
Central Paratethys ◽  
Upper Miocene ◽  
Marine Deposits

This paper examines Badenian (middle Miocene) macroinvertebrates – corals and molluscs – from the Pécs-Danitzpuszta sand pit (Mecsek Mts, SW Hungary) in order to extend our knowledge on Miocene normal marine deposits of the Mecsek region. Corals occur reworked in the upper Miocene sand that was deposited in the brackish Lake Pannon, and presumably originate either from the middle Badenian Pécsszabolcs or the upper Badenian Rákos Member of the Lajta Formation. A total of seven taxa were identified. These taxa suggest subtropical conditions and a lack of coral reefs in the Badenian. Molluscs were found in situ in the upper Badenian Szilágy Clay Marl Member of the Baden Formation and the Rákos Member of the Lajta Formation. They dominantly consist of bivalves and represent benthic assemblages typical of the middle Miocene Central Paratethys.

scholarly journals Otoliths in situ from Sarmatian (Middle Miocene) fishes of the Paratethys. Part I: Atherina suchovi Switchenska, 1973

2016 ◽  
Vol 136 (1) ◽  
pp. 7-17 ◽  
Author(s):  
Werner Schwarzhans ◽  
Giorgio Carnevale ◽  
Alexandre F. Bannikov ◽  
Sanja Japundžić ◽  
Katarina Bradić
Keyword(s):  
Middle Miocene

Otoliths in situ from Sarmatian (Middle Miocene) fishes of the Paratethys. Part II: Gadidae and Lotidae

2016 ◽  
Vol 136 (1) ◽  
pp. 19-43 ◽  
Author(s):  
Werner Schwarzhans ◽  
Giorgio Carnevale ◽  
Andriy Bratishko ◽  
Sanja Japundžić ◽  
Katarina Bradić
Keyword(s):  
Middle Miocene

Gypsum facies in the Badenian (Middle Miocene) of southern Poland

1993 ◽  
Vol 30 (9) ◽  
pp. 1799-1814 ◽  
Author(s):  
Alicja Kasprzyk
Keyword(s):  
Shallow Water ◽  
Sea Level ◽  
Water Depth ◽  
Middle Miocene ◽  
Climatic Factors ◽  
Peripheral Part ◽  
Southern Poland ◽  
Lithostratigraphic Units ◽  
Peripheral Area ◽  
Maximum Water

Middle Miocene sulfate sediments south of the Holy Cross Mountains, southern Poland, comprise deep- and shallow-water as well as subaerial facies, accompanied by carbonates and siliciclastics. In the gypsum section, 18 lithostratigraphic units have been distinguished. The facies variety reflects distinct sedimentary conditions in the peripheral area of the evaporitic basin, where the maximum water depth never exceeded some tens of meters. The succession of facies is regressive and comprises six sedimentary cycles that reflect relative changes in sea level and in the physicochemical regime of the basin, both of which were controlled by tectonic and climatic factors. Sea level fell five times during sulfate sedimentation; the last sea-level drop led to the almost total desiccation of the sea in the peripheral part of the basin.

Reinterpretation of the Miocene Sea-Snake Egg Moniopterus Japonicus as a Boring of Rock-Boring Bivalve Lithophaga (Mytilidae: Mollusca)

2010 ◽  
Vol 84 (5) ◽  
pp. 848-857 ◽  
Author(s):  
Takuma Haga ◽  
Yukito Kurihara ◽  
Tomoki Kase
Keyword(s):  
Middle Miocene ◽  
Scanning Electronic Microscopy ◽  
Electronic Microscopy ◽  
Sea Snake ◽  
Senior Synonym ◽  
Coleopteran Insect ◽  
Pointed End ◽  
Oval Shape ◽  
Northern Japan

The enigmatic fossil Moniopterus japonicus Hatai et al., 1974 from the early Middle Miocene Moniwa Formation of northern Japan has been described as the only known example of fossil sea-snake eggs and also as fossilized pupal chambers of a coleopteran insect. A reexamination of the holotype provides no evidence in support of these previous interpretations. Scanning electronic microscopy and computed tomography observations on the holotype reveal that the calcareous lining, previously interpreted as eggshell, is instead composed of irregular spherulitic prisms, thin in the middle and becoming thicker toward both ends. In addition to the elongate oval shape and the presence of an opening at the more pointed end, these observations strongly suggest that M. japonicus is a boring of the mytilid boring bivalve Lithophaga isolated from the host rock. This reinterpretation is further supported by the occurrence of similar isolated and in situ borings with Lithophaga shells within the type and a nearby locality. Regarding this fossil as an ichnofossil makes the generic name Moniopterus a junior synonym of Gastrochaenolites Leymerie, 1842 and the species name japonicus is a senior synonym of Gastrochaenolites torpedo Kelly and Bromley, 1984. G. torpedo should thus be replaced with Gastrochaenolites japonicus (Hatai et al., 1974).

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