scholarly journals The Karpatian (late early Miocene) flora of the Mecsek area

2020 ◽  
pp. 51-122 ◽  
Author(s):  
Lilla Hably
Keyword(s):  
Late Miocene ◽  
Endemic Species ◽  
Riparian Vegetation ◽  
Middle Miocene ◽  
Vegetation Type ◽  
Early Miocene ◽  
Mean Annual Temperature ◽  
Vegetation Types ◽  
Climate Analysis ◽  
High Diversity

A rich macroflora has been collected from Karpatian (late early Miocene) layers of the Mecsek Mts during recent decades. The bulk of the fossil assemblage consists of leaves and also fruits of angiosperms. Among the more than a hundred taxa, several endemic species were described: Leguminocarpum mecsekense Andreánszky, Ailanthus mecsekensis Hably, Nyssa gyoergyi sp. nov., Nyssa gergoei sp. nov., Nyssa sp. 1, Clematis csabae sp. nov., Gordonia sp. and Carpolithes gergoei Hably et Erdei sp. nov. Many taxa were last recorded in the Carpathian Basin, e.g. Cedrelospermum, Ziziphus. Other taxa appeared in this flora, e.g. Quercus kubinyii, Podocarpium podocarpum, Liquidambar europaea and Populus populina, and later became dominant in the middle Miocene (Sarmatian) floras or even in the late Miocene (Pannonian) floras. Four main vegetation types were determined. The most significant types are subxerophytic vegetation showing high diversity, swamp vegetation, riparian vegetation, and a vegetation type growing in habitats with higher rainfall. Thermophilous flora elements are dominant in the assemblage, although “arctotertiary” species also appear. The floristic character of the flora supports the results of an earlier quantitative climate analysis of the Magyaregregy flora, according to which mean annual temperature was 15.6–16.6°C and coldest-month and warmest-month temperatures were 5–6.2°C and 24.7–27.9°C, respectively. Generally the assemblage presented in this paper extends those climatological findings to the late early Miocene.

scholarly journals The distribution of <i>Triebelina raripila</i> and <i>Carinocythereis carinata</i> (Ostracoda) from the Middle Miocene of the Central Paratethys and their palaeogeographic implications

1998 ◽  
Vol 17 (2) ◽  
pp. 125-130 ◽  
Author(s):  
J. Szczechura
Keyword(s):  
Shallow Water ◽  
Late Miocene ◽  
Middle Miocene ◽  
Early Miocene ◽  
Central Paratethys ◽  
Eastern Paratethys ◽  
Main Species ◽  
Late Middle Miocene ◽  
The Mediterranean

Abstract. Late Middle Miocene (Upper Badenian) strata of the Fore-Carpathian Depression of Poland yield a shallow-water ostracod fauna which contains the species Triebelina raripila (G. W. Müller, 1894) and Carinocythereis carinata (Roemer, 1838). The palaeobiogeographic distribution of the two main species suggests, that in the late Middle Miocene, Central Paratethys was still connected to the Mediterranean, although still separated from the Eastern Paratethys and from southeastern Eurasia. The continuous occurrence of Triebelina raripila and Carinocythereis carinata in the Mediterranean basins, from the Early Miocene to Recent, indicates that marine conditions existed throughout, thereby allowing them to survive the Late Miocene salinity crisis.

scholarly journals Diversity and biostratigraphy of the late Oligocene-late Miocene sand dollars (Echinoidea: Scutelliformes) of Argentina and Uruguay

2021 ◽  
Vol 69 (Suppl.1) ◽  
pp. 35-50
Author(s):  
Claudia-J. Del Río ◽  
Sergio Martínez
Keyword(s):  
South America ◽  
Late Miocene ◽  
Middle Miocene ◽  
Field Work ◽  
Early Miocene ◽  
Late Oligocene ◽  
Good Correspondence ◽  
Shallow Marine ◽  
Sand Dollars ◽  
Temporal Dimensions

Introduction: Scutelliforms were diverse and widespread in shallow marine environments during Neogene times in South America. Nevertheless, they have almost never been used as biostratigraphic tools. Objective: To provide a refined stratigraphic frame useful for calibrating temporal dimensions of scutelliform diversity from Argentina and Uruguay and its correlation with the molluscan assemblages previously proposed. Methods: A detailed survey of their geographic and stratigraphic provenance was carried out. We revised both the bibliography and collections (institutional and from our own field work). Results: The group is represented by 14 species belonging to six genera, and four assemblages were identified. Numerical dates of the Neogene marine rocks obtained recently allowed their placement in a chronological scheme: “Iheringiella” sp. A is restricted to the late Oligocene, the genera Camachoaster and “Eoscutella” and the species Monophoraster telfordi to the early Miocene, Abertella gualichensis and Abertella miskellyi to the middle Miocene, and Monophoraster duboisi, Amplaster coloniensis and Amplaster ellipticus to the late Miocene. Non-lunulate scutelliforms are not restricted to the late Oligocene as previously supposed. The oldest occurrence of the genus Monophoraster corresponds to the early Miocene, and along with Iheringiella are long-living taxa that embrace the 25.3 Ma-18.1 Ma (Iheringiella patagonensis) and approximately 15 Ma-6.48 Ma (Monophoraster darwini) intervals. The presence of Iheringiella in the early Miocene of northeastern Patagonia is corroborated, reaching there its northernmost distribution. Monophoraster darwini has a temporal range from the late Miocene (where it was previously thought to be restricted) back to the middle Miocene, since this is the species yielded in the well-known and discussed “Monophoraster and Venericor Beds”. Conclusions: The Paleogene-Neogene scutelliforms of Argentina and Uruguay range from the late Oligocene to the late Miocene. There is a good correspondence among the numerical ages, molluscan biozones and scutelliform assemblages.

Tertiary marine molluscan assemblages of eastern Patagonia (Argentina): A biostratigraphic analysis

2004 ◽  
Vol 78 (6) ◽  
pp. 1097-1122 ◽  
Author(s):  
Claudia Julia del Río
Keyword(s):  
Late Miocene ◽  
Middle Miocene ◽  
Late Eocene ◽  
Early Miocene ◽  
Late Oligocene ◽  
Late Paleocene ◽  
Compositional Changes ◽  
Molluscan Species

Pectinids are the most abundant and widely distributed taxa in the Tertiary marine beds of Patagonia. Along with other very common molluscan species, they characterize five assemblages, from oldest to youngest: 1) the Oligocene Panopea sierrana-Parinomya patagonensis Assemblage; 2) the Late Oligocene–Early Miocene Jorgechlamys centralis–Reticulochlamys borjasensis Assemblage; 3) the Early Miocene Reticulochlamys zinsmeisteri–Struthiolarella patagoniensis–Pleuromeris cruzensis Assemblage; 4) the Early Miocene Pseudoportlandia glabra–Antimelatoma quemadensis Assemblage; and 5) the latest Early Miocene–earliest Middle Miocene Nodipecten sp.–Venericor abasolensis–Glycymerita camaronesia Assemblage. A brief analysis of the origin and composition of these Tertiary Patagonian molluscan faunas is provided. Striking compositional changes occurred through time, recorded mainly in the Late Paleocene, Late Eocene, Late Oligocene–Early Miocene, and 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.

scholarly journals New suoid fossils (Mammalia, Artiodactyla) from the Miocene of Moghara, Egypt, and Gebel Zelten, Libya: biochronological implications

2021 ◽  
Vol 77 (1) ◽  
pp. 111-125
Author(s):  
Martin Pickford ◽  
Mohamed Abdel Gawad ◽  
Mohamed Hamdan ◽  
Ahmed N. El-Barkooky ◽  
Mohammed H. Al Riaydh
Keyword(s):  
Late Miocene ◽  
Middle Miocene ◽  
Early Miocene ◽  
Geological Museum ◽  
Upper Molar

Some undescribed suoid specimens from early and middle Miocene deposits at Moghara, Egypt, and Gebel Zelten, Libya, are of interest for biochronology. The fossils comprise maxillae and mandibles with incomplete dentitions, which are described and illustrated in detail. Three species of suids and one sanithere occur at Moghara. A huge edentulous suid mandible was collected at Gebel Zelten in 1997 during the Spanish-Libyan Palaeontology Expedition. In January, 2020, additional sanithere fossils were collected from Moghara by a team from Cairo University and the Muséum National d’Histoire Naturelle, Paris. A suid mandible with four teeth collected from Moghara in 1994, and now curated at the Cairo Geological Museum, confirms the presence of the species Libycochoerus massai at the site, previously represented by an isolated upper molar and two canines. A talus previously thought to be from Moghara is now known to have been collected at Wadi Natrun (late Miocene) and thus probably represents a tetraconodont rather than a kubanochoere. The age of the Moghara deposits is estimated to span the period ca. 19.5–16.5 Ma (late early Miocene, Faunal Sets PII–PIIIa) and the Zelten sequence is most likely to span the period ca. 17–14.5 Ma (late early Miocene to basal middle Miocene, Faunal Sets PIIIa–PIIIb).

Neogene Pectinidae (Bivalvia) of tribe Chlamydini Teppner, 1922 in Patagonia (Argentina):ZygochlamysIhering, 1907 and three new genera

2018 ◽  
Vol 93 (2) ◽  
pp. 312-336 ◽  
Author(s):  
María B. Santelli ◽  
Claudia J. del Río
Keyword(s):  
Late Miocene ◽  
Type Species ◽  
Antarctic Circumpolar Current ◽  
Middle Miocene ◽  
New Genus ◽  
Early Miocene ◽  
New Genera ◽  
Early Pliocene ◽  
Circumpolar Current ◽  
The Antarctic

AbstractZygochlamysIhering, 1907 is revised and three new genera of tribe Chlamydini are named: the monospecific early Miocene generaPixiechlamysnew genus (type species:Pecten quemadensisIhering, 1897) andChokekenian. gen. (type species:Zygochlamys nicolasiMorra, 1985), and the late Miocene–early PlioceneMoirechlamysn. gen., containingPecten actinodesSowerby, 1846 (type species) andChlamys auroraeFeruglio, 1954.Zygochlamysis restricted to includeZ. geminata(Sowerby, 1846) (type species),Z. jorgensisIhering, 1907, andZ. sebastianiMorra, 1985. The present analysis increases the biostratigraphic usefulness of the group and improves taxonomic knowledge of the Neogene molluscan assemblages defined previously for Patagonia.Zygochlamys geminatais confined to the latest Oligocene–early Miocene interval of the Austral Basin of Patagonia (Argentina) and to the early Miocene of Chile,Z. jorgensisis restricted to the early to middle Miocene of the Golfo San Jorge and northern Austral Basins, andMoirechlamysn. gen., the most widespread genus, occurs in the late Miocene–early Pliocene of the Austral, Golfo San Jorge, Valdés, and Colorado basins. All these genera are endemic to southern South America;Zygochlamysis not related to other circumpolar genera such asAustrochlamysJonkers, 2003 orPsychrochlamysJonkers, 2003, rejecting its dispersal in the Antarctic Circumpolar Current, as has been proposed previously.UUID:http://zoobank.org/55d7ea85-5ec5-477a-9ede-5d3d795b75b5

scholarly journals Flora bromeliológica del estado de Guerrero, México: riqueza y distribución

2017 ◽  
pp. 55
Author(s):  
Valeria Angélica Pulido-Esparza ◽  
Ana Rosa López-Ferrari ◽  
Adolfo Espejo-Serna
Keyword(s):  
Species Identification ◽  
Endemic Species ◽  
Deciduous Forest ◽  
Vegetation Type ◽  
The State ◽  
Tropical Deciduous Forest ◽  
Species Number ◽  
Herbarium Specimens ◽  
Vegetation Types ◽  
First Time

The state of Guerrero is interesting because of its rich and peculiar Bromeliad flora that includes a large number of endemic species. Based on the study of 1,250 herbarium specimens corresponding to 797 collections, and a detailed bibliographic revision we conclude that the Bromeliad flora known up to now for Guerrero comprises 88 species and 11 genera. The genera Racinaea and Ursulaea and the species Catopsis berteroniana, Hechtia reflexa, Racinaea ghiesbreghtii, Tillandsia andrieuxii, T. gymnobotrya, T. magnusiana, T. marabascoensis, T. polystachia, T. rettigiana, T. tricolor and Ursulaea tuitensis, are recorded for the first time for Guerrero. The states whose Bromeliad flora is most similar to that of Guerrero are Jalisco, Michoacán and Colima, followed by State of México and Morelos. Among the vegetation types occurring in the state, Quercus forest is the richest with 42 taxa, followed by tropical deciduous forest with 33 and tropical subdeciduous forest with 27. The vegetation type with the lowest species number is the Juniperus forest. Finally, an updated catalogue of the Bromeliaceae from the state of Guerrero, including keys to genus and species identification, is presented; also, the species representation and distribution are analized in detail.

scholarly journals Tooth Marker of Ecological Abnormality: the Interpretation of Stress in Extinct Mega Herbivores (Proboscideans) of the Siwaliks of Pakistan

2021 ◽  
Author(s):  
Muhammad Ameen ◽  
Abdul Khan ◽  
Rana Ahmad ◽  
Muhammad Ijaz ◽  
Muhammad Imran
Keyword(s):  
Climate Change ◽  
Late Miocene ◽  
Middle Miocene ◽  
Indian Subcontinent ◽  
Climatic Conditions ◽  
C3 Plants ◽  
Mean Annual Precipitation ◽  
Mean Annual Temperature ◽  
Enamel Hypoplasia ◽  
Grassland Ecology

Climate effects habitat and define species physiology. Climatic regimes were different in past and adaptability of different species varied. Climate change causes certain stress on animal, recorded as Enamel Hypoplasia (EH). Proboscideans, the mega herbivores were extensively represented in the Siwaliks of Pakistan between Middle Miocene to Pleistocene (~15.2 – ~1.0Ma). The study is carried out on 15 species from 9 genera and 4 families using 319 teeth from 266 individual quarries. Our results revealed 20.06% (64/319) teeth infected by EH. Family Deinotheriidae faced higher stress during the terminal of middle Miocene (EH 25%). Dental structure indicate that this family preferred soft vegetation like C3 plants and failed to survive in grassland ecology at the onset of Late Miocene (~10-9 Ma). Gomphotheriids (EH 21.05%) and Stegodontids (EH 23.40%) survived through warm and dry climatic conditions of the Late Miocene, but could not survive the cool and dry climate of Plio-Pleistocene where grasslands were abundant with less browsing activity. Family Elephantidae (EH 8.75%) was successful in drier conditions, and utilized the exclusive C4 diet in open grasslands as efficient grazers, indicated by their tooth morphology. Elephantids were dominant of the proboscideans in open grassland and drier climate during Plio-Pleistocene in Indian subcontinent. We assume that change in the Siwalik climate was governed by microclimate as in the present day Siwaliks grasslands are widely distributed at low altitudes with lower mean annual precipitation and forestlands still persist in Myanmar and Nepal which receives more rainfall and have lower mean annual temperature.

scholarly journals The Miocene fossil lizards from Kutch (Gujarat), India: a rare window to the past diversity of this subcontinent

2021 ◽  
pp. 1-11
Author(s):  
Andrej Čerňanský ◽  
Ningthoujam Premjit Singh ◽  
Rajeev Patnaik ◽  
K. Milankumar Sharma ◽  
Raghavendra Prasad Tiwari ◽  
...  
Keyword(s):  
South Asia ◽  
Late Miocene ◽  
Middle Miocene ◽  
Mean Annual Temperature ◽  
Biodiversity Hotspots ◽  
The Past ◽  
Reptile Species ◽  
Global Biodiversity ◽  
Fossil Lizards

Abstract The Miocene beds of Kutch in India are well known for their mammalian assemblages, including the extinct ape Sivapithecus, but far less is known about the fossil squamates from this area. Although India with its over 800 reptile species is recognized as one of the global biodiversity hotspots, knowledge of past diversity and paleobiogeography of squamates on this subcontinent is very limited. We here report on new lizard finds, which have been recovered from two stratigraphic levels: the older Palasava locality (dated to the middle Miocene, ca. 14 Ma) and the younger Tapar site (late Miocene, ca. 11–10 Ma). Although fragmentarily preserved, the material described here sheds important light on the composition and paleobiogeography of squamates during the Miocene in South Asia. The older Palasava locality contains cf. Uromastyx s.l. and Varanus sp., the latter representing the oldest record of this taxon in the region of India south of the Himalayas and its occurrence here suggests a mean annual temperature not less than 15°C. The material from the younger Tapar locality consists of an unidentified acrodontan lizard, here questionably placed in agamids, and a skink. The latter shows a resemblance to mabuyines, however, the fragmentary nature of the material does not allow a precise allocation without doubts. The cosmopolitan mabuyines have been suggested to have their origin in Asia, so the potential presence of mabuyines in the Tapar locality might represent the first, but putative, Asian evidence of the occurrence of this group in the Miocene.

scholarly journals Satellite monitoring of different vegetation types by differential optical absorption spectroscopy (DOAS) in the red spectral range

2007 ◽  
Vol 7 (1) ◽  
pp. 69-79 ◽  
Author(s):  
T. Wagner ◽  
S. Beirle ◽  
T. Deutschmann ◽  
M. Grzegorski ◽  
U. Platt
Keyword(s):  
Optical Absorption ◽  
Absorption Spectroscopy ◽  
Spectral Range ◽  
Near Infrared ◽  
Vegetation Type ◽  
Differential Optical Absorption Spectroscopy ◽  
Trace Gas ◽  
Satellite Monitoring ◽  
Optical Absorption Spectroscopy ◽  
Vegetation Types

Abstract. A new method for the satellite remote sensing of different types of vegetation and ocean colour is presented. In contrast to existing algorithms relying on the strong change of the reflectivity in the red and near infrared spectral region, our method analyses weak narrow-band (few nm) reflectance structures (i.e. "fingerprint" structures) of vegetation in the red spectral range. It is based on differential optical absorption spectroscopy (DOAS), which is usually applied for the analysis of atmospheric trace gas absorptions. Since the spectra of atmospheric absorption and vegetation reflectance are simultaneously included in the analysis, the effects of atmospheric absorptions are automatically corrected (in contrast to other algorithms). The inclusion of the vegetation spectra also significantly improves the results of the trace gas retrieval. The global maps of the results illustrate the seasonal cycles of different vegetation types. In addition to the vegetation distribution on land, they also show patterns of biological activity in the oceans. Our results indicate that improved sets of vegetation spectra might lead to more accurate and more specific identification of vegetation type in the future.

Sign in / Sign up

Export Citation Format

Share Document