نتایج جستجو برای: palaeobiogeography

تعداد نتایج: 119  

2010
Francisco Rodríguez-Sánchez Arndt Hampe Pedro Jordano Juan Arroyo

a r t i c l e i n f o Keywords: genetic diversity glacial refugia hindcasting palaeobiogeography Spain species distribution modelling The forests in the Iberian Peninsula have been strongly influenced by past climatic changes, but reconstructing their historical distributions and dynamics is very difficult due to the complex climatic characteristics and relief of the region. Research discipline...

Journal: Geopersia 2015

Rhaetian strata from the Nayband Formation of the Tabas block, East- Central Iran, were studied palynologically. The materialexamined contained moderately diverse and well-preserved dinoflagellate cyst assemblages which lead to the identification ofRhaetogonyaulax rhaetica Zone. The assigned age of this dinozone (Rhaetian) is justified by plant fossils such as Equisetitesarenaceus, Scytophyllum...

2009
Cajus Godehard Diedrich

Rare Late Pleistocene porcupine remains of Hystrix (Atherurus) brachyura Linnaeus 1758 are described from the Fuchsluken Cave, a small gypsum karst cavity at the Rote Berg on the Giebelstein near Saalfeld (Thuringia, Central Germany). The cave was used during the Eemian and mainly Early Weichselian (around 120.000-75.000 BP) by spotted hyena clans of Crocuta crocuta spelaea (Goldfuss 1823), whi...

2014
Friðgeir Grímsson Reinhard Zetter Heidemarie Halbritter Guido W. Grimm

The fossil record of Aponogeton (Aponogetonaceae) is scarce and the few reported macrofossil findings are in need of taxonomic revision. Aponogeton pollen is highly diagnostic and when studied with light microscopy (LM) and scanning electron microscopy (SEM) it cannot be confused with any other pollen types. The fossil Aponogeton pollen described here represent the first reliable Cretaceous and...

2016
Jérémy Anquetin Sandra D Chapman

Plesiochelyidae is a clade of relatively large coastal marine turtles that inhabited the shallow epicontinental seas that covered western Europe during the Late Jurassic. Although the group has been reported from many deposits, the material is rarely identified at the species level. Here, we describe historical plesiochelyid material from the Kimmeridge Clay Formation of England and compare it ...

2007

As for most geological period boundaries, the Triassic–Jurassic (T–J) transition, ∼200 million years ago, was a critical juncture in Earth history during which profound biotic and environmental changes took place. Early comparisons with the end-Cretaceous extinction and the involvement of extraterrestrial impact have now largely, although not entirely, given way to more Earthbound explanations ...

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