Georgios Theodorou

Georgios Theodorou
National and Kapodistrian University of Athens | uoa · Department of Historical Geology and Palaeontology

Em. Professor

About

124
Publications
18,073
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September 2016 - October 2017
National and Kapodistrian University of Athens
Position
  • Professor

Publications

Publications (124)
Article
Full-text available
The first detailed description of Ancylotherium pentelicum (Gaudry and Lartet, 1856) from the late Miocene (Turolian) of Kerassia (Greece) is provided based on three metapodial elements. Potential intraspecific variability of this species in the Eastern Mediterranean has been previously discussed, but no decisive conclusions could be drawn. The pre...
Article
Remains of the fossil aardvark Amphiorycteropus gaudryi (Orycteropodidae, Tubulidentata) from the late Miocene locality of Kerassia in Greece are here described and compared with material of other orycteropodid species. The studied material includes a partially preserved skull, two mandibular fragments, two lumbar vertebrae, the first rather comple...
Article
The present study describes an almost complete cervical region of the fossil ostrich Struthio karatheodoris from the Turolian locality of Kerassia (Euboea, Greece). The material comes from two distinct fossiliferous horizons and consists of twelve cervical vertebrae, ten of which belong to the same individual. These specimens are the first remains...
Conference Paper
Full-text available
The family Chalicotheriidae formed a peculiar perissodactyl lineage with no extant representatives. The schizotheriine chalicotheriid Ancylotherium pentelicum was a rare, but typical faunal element of the sub-Paratethyan (Balkan-Iranian) biogeographical province during the late Miocene. In the present work, three new postcranial specimens of A. pen...
Conference Paper
Full-text available
The locality of Kerassia was discovered in 1982, yielding a diverse Late Miocene mammalian fauna. Since 1992, the University of Athens has been conducting a series of recurring systematic excavations, unveiling seven fossiliferous sites belonging to two distinct stratigraphical horizons. The rhinocerotid diversity at Kerassia is notable, comprising...
Conference Paper
Full-text available
The Turolian fossil beds of Greece include a high number of contemporary small carnivoran taxa, such as Mustelidae (Promeles, Parataxidea, Martes, Sinictis, Enhydriodon), Mephitidae (Promephitis) and Hyaenidae (Protictitherium, Plioviverrops). Many of these species are found together in some localities, therefore they must have adapted some differe...
Conference Paper
Full-text available
The present study deals with two enigmatic carnivores of the Late Miocene of Greece, Plesiogulo crassa and Simocyon primigenius, from an ecomorphological point of view. These species are compared to extant mustelids and canids respectively, in order to provide some suggestions on their diet. Plesiogulo crassa was a large, wolverine-like mustelid. M...
Article
This article deals with the fossil tortoises of one of the most iconic fossil localities of the Neogene of the Old World, the upper Miocene locality of Pikermi, near Athens, Greece. We describe the type, previously published, and new material of the fossil tortoises from Pikermi, along with new material from the coeval Azmaka 6 locality in Bulgaria...
Article
Full-text available
The renowned Pikermian fauna has long served as a reference for the systematic, biostratigraphic and paleoecological study of Late Miocene Eurasian mammals. The classical locality of Pikermi has been extensively excavated since the mid-19th century, with the latest series of systematic excavations organised by the National and Kapodistrian Universi...
Conference Paper
Full-text available
This study deals with the description of the fauna of Karnezeika, a new Middle-Late Villafranchian locality in southern Greece. The faunal assemblage is significantly rich, given the low number of specimens, including 22 genera of macromammals, micromammals, aves and reptiles
Conference Paper
Full-text available
A fieldwork update on the new palaeontological excavations at the classical Turolian locality of Pikermi (Attica, Greece).
Poster
Full-text available
A fieldwork update on the new palaeontological excavations at the classical Turolian locality of Pikermi (Attica, Greece). For additional information and proper citation, view the published extended abstract: https://www.researchgate.net/publication/333973305
Conference Paper
Full-text available
Faunal Diversity at the Turolian locality of Kerassia (Northern Euboea, Greece)
Poster
Full-text available
In this study, the tail length of “Metailurus parvulus” is estimated, using a variety of methods. The studied material consists of a sacrum and four associated caudal vertebrae excavated from the Late Miocene locality Kerassia-1 in 2001. These specimens are the first remains of the tail of “M. parvulus”. The fossils were compared to different extan...
Poster
Full-text available
The presence of ostriches in the fossil record of Greece has been known since the 19th century. During the Late Miocene of Greece the genus Struthio (Aves, Struthioniformes) was represented by S. karatheodoris, which was initially described from Samos Island. Over the last few decades, remains of S. karatheodoris have been identified from many othe...
Poster
In the present study, rhinoceros fossils are described from the new locality of Richea (Eastern Laconia, Greece) for the first time. The fossils were discovered in bone-bearing calcified breccia inside the limestone fissures of the Tripolis geotectonic zone, and were deposited in the collections of the Museum of Palaeontology and Geology of Athens (AM...
Presentation
Full-text available
In this study we publish the occurrence of Amphiorycteropus gaudryi from the Late Miocene of Kerassia in Greece for the first time. We describe the new material and we make some assumptions about the morphology and the ecology of the species.
Poster
In the present study, rhinoceros fossils are described from the new locality of Richea (Eastern Laconia, Greece) for the first time. The fossils were discovered in bone-bearing calcified breccia inside the limestone fissures of the Tripolis geotectonic zone, and were deposited in the collections of the Museum of Palaeontology and Geology of Athens (AM...
Poster
Full-text available
In the present study, rhinoceros fossils are described from the new locality of Richea (Eastern Laconia, Greece) for the first time. The fossils were discovered in bone-bearing calcified breccia inside the limestone fissures of the Tripolis geotectonic zone, and were deposited in the collections of the Museum of Palaeontology and Geology of Athens (AM...
Conference Paper
Full-text available
The locality of Pikermi (Attica, Greece) has yielded a remarkably rich Late Miocene vertebrate fauna, which is considered to be part of the Subparatethyan or Greco-Iranian Zoogeographic Province. Among the Order Perissodactyla, the Family Rhinocerotidae has encountered some complex taxonomic problems due to its high uniformity. Species taxonomy has...
Poster
Full-text available
New morphological and biometrical data on the carpal and metacarpal bones of Dihoplus pikermiensis and "Diceros" neumayri (Perissodactyla, Rhinocerotidae) from the Late Miocene of Greece.
Article
Full-text available
Dating fossil hominids and reconstructing their environments is critically important for understanding human evolution. Here we date the potentially oldest hominin, Graecopithecus freybergi from Europe and constrain the environmental conditions under which it thrived. For the Graecopithecus-bearing Pikermi Formation of Attica/Greece, a saline aeoli...
Data
Geopedal structures in giraffid long-bones from Pyrgos Vassilissis. Sediment infill of bones (a, TE 124; b, TE 130) overgrown by geopetal sparry calcite, which provides a palaeo-horizon for palaeomagnetic analysis of Pyrgos. (TIF)
Data
Grain-size spectra for palaeosol samples from the Graecopithecus horizon of Pyrgos (Pikermi Formation, Attica Basin). Measured grain size distribution (GSD, shown as a grey area in each diagram) versus fitted grain spectra (red line) using the simplified end-member (EM) spectra (Fig 11) from the Pikermi Formation of the nearby Mesogea basin (EM1—bl...
Data
Ionic composition of soluble salts from eolian silt of the Pikermi Formation (Attica and Mesgea Basins). (XLSX)
Data
Measurements of Hippotherium brachypus from Pyrgos Vassilissis. Dimensions (in mm) of the cranial fragment AMPG 02, the premolar row TE 114, and the mandibular fragment AMPG 03. The definitions of measurements (italics) follows [84]. (XLSX)
Data
Giraffid mandibular tooth dimensions. cf. Palaeotragus sp. from Pyrgos Vassilissis, compared to Palaeotragus rouenii and Bohlinia attica (MNHN: Muséum National d’Histoire Naturelle, Paris) (in mm; L–length, W–width, H—height). Heights of unworn teeth are in bold. (XLSX)
Data
Grain-size spectra for samples from Azmaka palaeosoils (Ahmatovo Formation, Upper Thrace Basin). Measured GSD versus fitted grain spectra using simplified end-member (EM) spectra from the Pikermi Formation (Mesogea Basin) for the aeolian components only (EM1—blue, EM2—magenta). The r2 value for each diagram represents the variance of the GSD explai...
Data
Detailed counts of pollen and micro-charcoal from the Pikermi Formation (Athens and Mesogea Basins). (XLSX)
Data
Pedogenic carbonate δ18O and δ13C data from the Pikermi Formation (Athens and Mesogea Basins). (XLSX)
Data
LA-SF-ICP-MS U-Pb-Th data of detrital zircons. Sample CA 2.75, n = 60 measured zircon grains, red siltstone, Pikermi Formation, Red Conglomeratic Member, sub-section Chomateri A (coordinates: N 38° 00’ 48”, E 23° 57’ 46”). Grey shading indicate recommended ages in the range of concordance of 90–110%. Discordant ages (below or above the range of con...
Data
Detailed counts of phytolith types (in %) and phytolith indices from the Pikermi Fm (including Pyrgos), Attica and Mesgea Basins. (XLSX)
Data
Measurements of Hippotherium brachypus from Pyrgos Vassilissis. Dimensions (in mm) of the upper and lower check teeth. The measurements L (length) and W (width) are taken on the occlusal surface and follows [84]. (XLSX)
Data
Grain-size spectra for samples from Rafina (top of Rafina Formation, Mesogea Basin) and Cucuron (Mt Luberon, Vaucluse, France). Measured GSD versus fitted grain spectra using the simplified EM spectra from the Pikermi Formation (Mesogea Basin) for aeolian components only (EM1—blue, EM2—magenta). The r2 value for each diagram represents the variance...
Data
Ages and age distribution of aeolian zircons from the Pikermi Formation (Mesogea Basin). a, b, Concordia plots of U-Pb LA-ICP-MS data for sample CA 2.75 for all measurements (a) and of the younger zircon grains in an age range of 0 to 1500 Ma (b). c, d, Combined binned frequency and probability density distribution plots of U-Pb LA-ICP-MS ages of d...
Data
Phytolith taxonomy and interpretation. (DOCX)
Data
Measurements of Tragoportax macedoniensis from Pyrgos Vassilissis and Dytiko (DTK, DIT, DKO). Dimensions (in mm, L–length) of the upper tooth series. Values in parentheses indicate approximate measurements. Data from Dytiko according to [85]. (XLSX)
Data
Measurements of Tragoportax macedoniensis from Pyrgos Vassilissis and Dytiko (DTK, DIT, DKO). Horn-core basal dimensions (in mm). APD–anteroposterior diameter of the horn-core at its base; TD–transverse diameter of the horn-core at its base. Values in parentheses indicate slightly approximate measurements. Data from Dytiko according to [85]. (XLSX)
Data
Sedimentological and statistical properties of end-member loadings obtained with EMMAgeo. (DOCX)
Data
End member modelling of grain-size spectra. (DOCX)
Data
The Pyrgos Vassilissis mammalian fauna. (DOCX)
Article
Presented here are the deinotheriid dental and postcranial remains from the Late Miocene localities Pikermi and Halmyropotamos (Greece). The study and comparison of the available juvenile dental material from Pikermi with other relevant specimens from Europe showed that it belongs to the huge-sized Deinotherium proavum (= D. gigantissimum). Additio...
Article
Full-text available
Calcareous nannofossil biostratigraphy from Kotaphi Hill section allowed not only the biostratigraphic zonation of the Miocene units but also provided evidence for a distinct warm phase known as the Middle Miocene Climate Optimum (MMCO). Kotaphi Hill section is located in Agrokipia village (Nicosia region, Cyprus) and consists of cyclic marine depo...
Article
Cyprus, the largest Eastern Mediterranean island, hosted a highly impoverished endemic mammalian fauna during the Pleistocene to early Holocene times. This was a result of its extreme biogeographic isolation since its formation, which prevented the immigration of most terrestrial mammals, except for those with apparent sea channel crossing abilitie...
Article
Full-text available
Quantitative analyses of calcareous nannofossils in the sediments of Pissouri South section on the island of Cyprus have produced a paleoceanographic record reflecting the paleoclimatic conditions during the Zanclean/Piacenzian transition. Pissouri South cyclical lithological alternations between organic-rich laminated layers and grey marls reflect...
Article
Full-text available
In 2005, numerous vertebrate tracks were discovered in carbonate aeolianites in and around the town of Paphos, in the southwestern part of Cyprus. The main track-bearing exposure is located in a protected archaeological site near the Agia Solomoni Church inside the city of Paphos, where cross-sections through tracks are abundant in vertical exposur...
Article
Charkadio Cave, on Tilos Island, is one of the richest Mediterranean fossiliferous sites, preserving remains of the dwarf elephant Palaeoloxodon tiliensis. This species is considered to be the last European elephant. Recent advances in the fields of engineering and imaging technology and their applications in palaeontology have allowed the digitiza...
Article
Presented here are the tetralophodont proboscidean remains from the late Miocene locality Pikermi (Attica, Greece). The study of the Pikermi tetralophodons and their comparison with other relevant specimens revealed that the late Miocene species ‘Tetralophodon’ atticus and ‘Mastodon’ grandincisivus are synonymous. The morphological characters of th...
Article
Full-text available
Presented here are the tetralophodont proboscidean remains from the late Miocene locality Pikermi (Attica, Greece). The study of the Pikermi tetralophodons and their comparison with other relevant specimens revealed that the late Miocene species ‘Tetralophodon’ atticus and ‘Mastodon’ grandincisivus are synonymous. The morphological characters of th...
Article
Full-text available
The Late Miocene locality of Kerassiá (North Euboea, Greece) has yielded a rich Turolian fauna, which forms part of the Eastern Mediterranean Pikermian biome. A prominent specimen of the Kerassiá collection, a well-preserved rhinocerotid skull with associated mandible, is described herein. The specimen demonstrates the diagnostic cranial, mandibula...
Conference Paper
Calcareous nannofossil biostratigraphy from Kotaphi Hill section allowed not only the biostratigraphic zonation of the Miocene units but also provided evidence for a distinct warm phase known as the Middle Miocene Climate Optimum (MMCO). Kotaphi Hill section is located in Agrokipia village (Nicosia region, Cyprus) and consists of cyclic marine depo...