scholarly journals Palynostratigraphy and vegetation changes during the early Middle Pleistocene, based on new studies of deposits from Ferdynandów (central eastern Poland)

2015 ◽  
Vol 55 (1) ◽  
pp. 54-67 ◽  
Author(s):  
Irena Agnieszka Pidek
Keyword(s):  
Middle Pleistocene ◽  
Vegetation Changes ◽  
Pollen Diagram ◽  
Palynological Data ◽  
Central Eastern ◽  
Glacial Periods ◽  
First Time

Abstract New palynological data from the Ferdynandów site are presented and interpreted against the background of the earlier division of this stratotype pollen sequence by Janczyk-Kopikowa (1975), with special attention to a comparison with the nearest profile of a complete Ferdynandovian succession in Łuków (Łuków Plain). The proposed division of the new pollen diagram from Ferdynandów - into two warm periods of interglacial rank separated by a succession typical of glacial periods - is based on the new division of the Ferdynandovian pollen sequence s.l., applied for the first time by Mamakowa (1996) to the Podgórze B1 pollen profile close to Nowe Miasto on the Pilica river. The two warm units and the cold one between them in the new pollen diagram from the Ferdynandów site correspond to the climatostratigraphic units named Ferdynandovian 1 and 2. Together with the cooling/glaciation (Ferdynandovian 1/2) separating them, the whole Ferdynandovian sequence s.l. can be related to the early Middle Pleistocene Cromerian Complex (Cromerian II Westerhoven and Cromerian III Rosmalen) and Marine Isotope Stages (MIS) 13-15.

scholarly journals Directional changes in Levallois core technologies between Eastern Africa, Arabia, and the Levant during MIS 5

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
James Blinkhorn ◽  
Huw S. Groucutt ◽  
Eleanor M. L. Scerri ◽  
Michael D. Petraglia ◽  
Simon Blockley
Keyword(s):  
Homo Sapiens ◽  
Environmental Parameters ◽  
Detailed Comparison ◽  
Eastern Africa ◽  
Middle Pleistocene ◽  
Reduction Activity ◽  
Core Technology ◽  
Geographic Expansion ◽  
First Time ◽  
Mis 5

AbstractMarine Isotope Stage (MIS) 5, ~ 130 to 71 thousand years ago, was a key period for the geographic expansion of Homo sapiens, including engagement with new landscapes within Africa and dispersal into Asia. Occupation of the Levant by Homo sapiens in MIS 5 is well established, while recent research has documented complementary evidence in Arabia. Here, we undertake the first detailed comparison of Levallois core technology from eastern Africa, Arabia, and the Levant during MIS 5, including multiple sites associated with Homo sapiens fossils. We employ quantitative comparisons of individual artefacts that provides a detailed appraisal of Levallois reduction activity in MIS 5, thereby enabling assessment of intra- and inter-assemblage variability for the first time. Our results demonstrate a pattern of geographically structured variability embedded within a shared focus on centripetal Levallois reduction schemes and overlapping core morphologies. We reveal directional changes in core shaping and flake production from eastern Africa to Arabia and the Levant that are independent of differences in geographic or environmental parameters. These results are consistent with a common cultural inheritance between these regions, potentially stemming from a shared late Middle Pleistocene source in eastern Africa.

scholarly journals Luminescence dating of a late Middle Pleistocene glacial advance in eastern England

2021 ◽  
Vol 100 ◽  
Author(s):  
Philip L. Gibbard ◽  
Mark D. Bateman ◽  
Jane Leathard ◽  
R.G. West
Keyword(s):  
Previous Investigation ◽  
Alluvial Fan ◽  
Luminescence Dating ◽  
Marine Isotope Stage ◽  
Middle Pleistocene ◽  
Eastern Margin ◽  
First Time ◽  
Late Middle Pleistocene ◽  
Glacial Advance

Abstract Previous investigation of isolated landforms, on the eastern margin of the East Anglian Fenland, England, has demonstrated that they represent an ice-marginal delta and alluvial fan complex deposited at the margin of an ice lobe that entered the Fenland during the ‘Tottenhill glaciation’ (termed the ‘Skertchly Line’). They have been attributed, based on regional correlations, to a glaciation during the Late Wolstonian (i.e. Late Saalian) Substage (Drenthe Stadial, early Marine Isotope Stage (MIS) 6). This paper aimed to test this correlation by directly optically luminescence dating, for the first time, sediments found within the Skertchly Line at Shouldham Thorpe, Norfolk, and Maidscross Hill, Suffolk, together with those in associated kame terrace deposits at Watlington, Norfolk. Ages ranged from 244 ± 10 ka to 12.8 ± 0.46 ka, all the results being younger than MIS 8 with some clearly showing the landforms have been subsequently subjected to periglacial processes, particularly during the Late Devensian Substage (∼MIS 2). Most of the remainder fall within the range 169–212 ka and could be assigned to MIS 6, thus confirming the previously proposed age of the glaciation. The local and regional implications of these conclusions are discussed, the maximum ice limit being linked to that of the Amersfoort–Nijmegen glaciotectonic ridge limit in the central Netherlands.

scholarly journals Pollen morphology of Ukrainian species of the genus Pedicularis L. (Orobanchaceae Vent.)

2012 ◽  
Vol 24 (1) ◽  
pp. 5-13 ◽  
Author(s):  
Olena M. Peregrym ◽  
Zoya M. Tsymbalyuk ◽  
Sergei L. Mosyakin
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Pollen Morphology ◽  
Pollen Grains ◽  
Taxonomic Revision ◽  
Palynological Data ◽  
First Time ◽  
Scanning Electron

Abstract Pollen grains of 10 species of Pedicularis occurring in Ukraine were investigated using light and scanning electron microscopy. Palynological data on 6 species are reported for the first time. General pollen morphology of the genus Pedicularis is presented. Three types of apertures (2-syncolpate, 3-colpate, and 3-syncolpate) and seven subtypes of sculpture (3-syncolpate pilate, 3-syncolpate microscabrate-tubeculate, 2-syncolpate microscabrate, 2-syncolpate microscabrate-tubeculate, 2-syncolpate microscabrate-tubeculate-perforate, 2-syncolpate microfoveolate, and 2-syncolpate microscabrate-perforate) are indentified. The subgenus Pedicularis is heterogeneous in its types of apertures and sculpture of the surface, which indicates the need of further taxonomic revision of the group.

Area of distribution and conditions of loess forming in the South Urals

2020 ◽  
pp. 16-30
Author(s):  
S. S. Popov ◽  
G. N. Shilova ◽  
A. O. Khotylev
Keyword(s):  
Middle Pleistocene ◽  
South Urals ◽  
Textural Features ◽  
Alluvial Fans ◽  
The South ◽  
Drainage Basins ◽  
Fluvial Terrace ◽  
Palynological Data ◽  
The Third ◽  
Lithological Composition

The report presents the results of comprehensive studies of loess-like formations that are common within drainage basins of Ay and Yuruzan rivers (South Urals). Loess complexes associated with the third fluvial terrace. The lithological composition, structural and textural features indicate that the loess were formed like the part of alluvial fans, planned under the third fluvial terrace. The obtained palynological data indicate the formation of deposits in the Middle Pleistocene during the Odintsovo interglacial and Moscow glaciation.

scholarly journals First nearly complete skull of Gallotia auaritae (lower-middle Pleistocene, Squamata, Gallotiinae) and a morphological phylogenetic analysis of the genus Gallotia

2019 ◽  
Vol 9 (1) ◽  
Author(s):  
Penélope Cruzado-Caballero ◽  
Carolina Castillo Ruiz ◽  
Arnau Bolet ◽  
Juan Ramón Colmenero ◽  
Julio De la Nuez ◽  
...  
Keyword(s):  
Phylogenetic Analysis ◽  
Cranial Morphology ◽  
Middle Pleistocene ◽  
Phylogenetic Position ◽  
Fossil Species ◽  
La Palma ◽  
Computed Microtomography ◽  
X Ray Computed ◽  
Cranial Osteology ◽  
First Time

Abstract The Canary Islands are an Atlantic archipelago known for its high number of endemic species. Among the most known endemic vertebrate species are the giant lizards of the genus Gallotia. We describe the cranial osteology of the first almost complete and articulated fossil skull of the taxon Gallotia auaritae, recovered from the lower-middle Pleistocene of the La Palma island. In this work, X-ray computed microtomography images were used to perform an exhaustive phylogenetic analysis where most of the extant and fossil species of the genus Gallotia were included for first time. This analysis recovered a monophyletic Gallotia clade with similar topology to that of molecular analyses. The newly described specimen shares some characters with the group formed by G. bravoana, G. intermedia and G. simonyi, G. auaritae, and its position is compatible with a referral to the latter. Our study adds new important data to the poorly known cranial morphology of G. auaritae, and the phylogenetic analysis reveals an unexpected power of resolution to obtain a morphology-based phylogeny for the genus Gallotia, for inferring the phylogenetic position of extinct species and for helping in the identification of fossil specimens.

Scarce population of malacofauna from MIS8/L3, at Titel loess plateau, Serbia

2020 ◽  
Author(s):  
Milica Radaković ◽  
Bojan Gavrilović ◽  
Luka Bosnić ◽  
Milivoj Gavrilov ◽  
Pal Sümegi ◽  
...  
Keyword(s):  
Loess Plateau ◽  
Environmental Changes ◽  
Time Period ◽  
Three Samples ◽  
Southern Central ◽  
Exposed Part ◽  
Glacial Periods ◽  
First Time ◽  
Continental Climate ◽  
Vojvodina Province

<p>We present our preliminary findings from the survey of malacofauna of the Titel loess plateau – Mošorin site (Serbia), conducted during 2018/2019. Titel loess plateau is situated near the confluence of Tisa and Danube rivers, in the southern central part of the Vojvodina province, the region known for having valuable continental climate record for the past million years. The study aims to gather palaeoenvironmental data and discern patterns of environmental changes during the Pleistocene in the loess domain. Previous surveys were done at the loess sites in Batajnica, Zemun, Crvenka and Irig. The exposed part of the Mošorin loess-paleosol section is 30 m high and covers the last three glacial periods. It is the first time we carried out a malacological analysis on the L3 segment of the profile. A total of 26 samples were collected from 5.2 m long cleaned profile section (ending of S3 to the beginning of S2). Nine species of snails were present in this horizon, including <em>Chondrula tridens</em>, <em>Granaria frumentum</em>, <em>Helicopsis striata</em>, <em>Pupilla muscorum</em>, <em>Pupilla triplicata</em>, <em>Punctum pygmaeum</em>, <em>Succinella oblonga</em>, <em>Vallonia costata</em>, <em>Vitrina pellucida,</em> and certain as-yet-unidentified slug taxa (Limacidae, Agriolimacidae, Milacidae). Greatest diversity and abundance was found near the S3 paleosol. Samples with no snail shells are continuous, and they are situated in the middle and upper part of the studied profile section. The first three samples that are closest to S3 include 65% of all snails shells found in the profile. The number of snail taxa and their abundance gradually increases again toward the S2 paleosol. Based on ecological preferences of discovered species (mostly thermophilous and xerophilous) we deduced that the environment during the L3 time period was an opened grassland, while the climate was mild and mostly dry.</p>

Late Cenomanian–Turonian (Cretaceous) ammonites from Wadi Qena, central Eastern Desert, Egypt: taxonomy, biostratigraphy and palaeobiogeographic implications

2012 ◽  
Vol 62 (1) ◽  
pp. 63-89 ◽  
Author(s):  
Emad Nagm ◽  
Markus Wilmsen
Keyword(s):  
West Africa ◽  
Late Cretaceous ◽  
Upper Cretaceous ◽  
Eastern Desert ◽  
Lower Upper ◽  
Central Eastern Desert ◽  
Wadi Qena ◽  
Central Eastern ◽  
First Time

ABSTRACT Nagm, E. and Wilmsen, M. 2012. Late Cenomanian-Turonian (Cretaceous) ammonites from Wadi Qena, central Eastern Desert, Egypt: taxonomy, biostratigraphy and palaeobiogeographic implications. Acta Geologica Polonica, 62 (1), 63-89. Warszawa. In Egypt, marine Upper Cenomanian-Turonian strata are well exposed in the Eastern Desert. The southernmost outcrops are located in the central part of Wadi Qena, where the lower Upper Cretaceous is represented by the fossiliferous Galala and Umm Omeiyid formations. From these strata, numerous ammonites have been collected bed-by-bed and 13 taxa have been identified, which are systematically described herein. Four of them (Euomphalocerascostatum, Vascoceras globosum globosum, Thomasites gongilensis and Pseudotissotia nigeriensis) are recorded from Egypt for the first time. The ammonite ranges are used for a biostratigraphic zonation of the lower Upper Cretaceous succession in the northern and central part of Wadi Qena: the Upper Cenomanian-Lower Turonian has been subdivided into five biozones (including a new upper Lower Turonian biozone based on the occurrence of Pseudotissotia nigeriensis), and one biozone has been recognized in the Upper Turonian. Palaeobiogeographically, the ammonite assemblage has a Tethyan character. During the Early Turonian, influences of the Vascoceratid Province were predominant with strong affinities to typical Nigerian faunas. This shows the significance of faunal exchange between Egypt and Central and West Africa via the Trans-Saharan Seaway. Compared to contemporaneous ammonoid faunas from the northern part of the Eastern Desert, Boreal influences are much less obvious in Wadi Qena. Thus, the present study greatly enhances the knowledge of the Late Cretaceous palaeobiogeography and biostratigraphy of Egypt and adjacent areas.

The early Middle Pleistocene vertebrate fauna from Little Oakley, Essex

1990 ◽  
Vol 328 (1248) ◽  
pp. 359-385 ◽  
Keyword(s):  
Sus Scrofa ◽  
Fish Fauna ◽  
Middle Pleistocene ◽  
Temperate Climate ◽  
Water Vole ◽  
Emys Orbicularis ◽  
Vertebrate Fauna ◽  
New Material ◽  
Sorex Minutus ◽  
First Time

The Little Oakley channel has provided one of very few stratified early Middle Pleistocene vertebrate faunas from the British Isles. This study is based both on material recovered by S. H. Warren in 1939, and new material excavated in 1982-87. 982-87. The vertebrate fauna is entirely consistent with a temperate climate and vegetation, in keeping with palaeobotanical and invertebrate evidence from the site. Mammals include taxa indicative of both woodland (e.g. Apodemus sylvaticus, Sus scrofa ), and more open areas (e.g. Equus sp., Sorex minutus ). At least 12 species of freshwater fishes have been identified, including the first British Pleistocene records of carp ( Cyprinus carpio ), freshwater burbot ( Lota lota ), and probably zander ( Stizostedion sp.). The herpetofauna includes the earliest dated British record of European pond tortoise ( Emys orbicularis ), which together with the fish fauna indicates fully interglacial conditions. The early giant deer Megaloceros verticornis and probably M. dawkinsi are recorded for the first time in Britain outside the Cromer Forest-bed Formation. These species, together with the ancestral water vole Mimomys savini , are of considerable stratigraphic significance, strongly supporting an age for the channel later than Pastonian but pre-dating faunas 2 and 3 of Westbury-sub-Mendip.

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