Results 21 to 30 of about 2,787 (192)

Late Devonian (Famennian) Chondrichthyes from Mexico [PDF]

open access: yesJournal of Vertebrate Paleontology, 2019
The Paleozoic vertebrate fossil record from Mexico is very scarce and strongly biased by rock exposure, composed mainly of upper Paleozoic (Carboniferous and Permian) outcrops (e.g., Sánchez-Zavala et al., 1999; Poole et al., 2005; González- Rodríguez et al., 2013).
Carlos Martínez-Pérez   +5 more
openaire   +2 more sources

The swimming trace Undichna from the latest Devonian Hangenberg Sandstone equivalent of Morocco

open access: yesSwiss Journal of Palaeontology, 2021
Trace fossils occur in several strata of the Devonian and Carboniferous of the eastern Anti-Atlas, but they are still poorly documented. Here, we describe a fossil swimming trace from strata overlying the Hangenberg Black Shale (correlation largely based
Christian Klug   +4 more
doaj   +1 more source

Metamorphic Remnants of the Variscan Orogeny across the Alps and Their Tectonic Significance

open access: yesGeosciences, 2023
Lithospheric slices preserving pre-Alpine metamorphic imprints are widely described in the Alps. The Variscan parageneses recorded in continental, oceanic, and mantle rocks suggest a heterogeneous metamorphic evolution across the Alpine domains.
Manuel Roda   +8 more
doaj   +1 more source

The tornoceratid ammonoids from the Roteisenstein Formation of Dillenburg (Cephalopoda, Ammonoidea)

open access: yesEuropean Journal of Taxonomy, 2022
The ammonoids of the suborder Tornoceratina from the Middle to Late Devonian Red Ironstone Formation of the area around Dillenburg (eastern Rhenish Mountains) are revised, mainly based on historical collections stored in the Museum für Naturkunde ...
Dieter Korn, Jürgen Bockwinkel
doaj   +1 more source

The early gephuroceratid ammonoids from the Roteisenstein Formation of Dillenburg (Cephalopoda, Ammonoidea)

open access: yesEuropean Journal of Taxonomy, 2022
The ammonoids of the suborder Gephuroceratina from the Roteisenstein (Red Ironstone) Formation of the area around Dillenburg (eastern Rhenish Mountains) are revised, mainly based on historical collections stored in the Museum für Naturkunde, Berlin. The
Dieter Korn, Jürgen Bockwinkel
doaj   +1 more source

The Truong Son, Loei-Phetchabun, and Kontum Terranes in Indochina: Provenance, Rifting, and Collisions

open access: yesFrontiers in Earth Science, 2021
The three main regions of Indochina are defined as the Truong Son, Loei-Phetchabun, and Kontum terranes. The aim of this review is to integrate numerous petrological studies with sedimentary, palaeontological, and provenance studies in order to construct
Clive Burrett   +3 more
doaj   +1 more source

A new Late Devonian genus with seed plant affinities. [PDF]

open access: yesBMC Evol Biol, 2015
Many ovules of Late Devonian (Famennian) seed plants have been well studied. However, because few taxa occur with anatomically preserved stems and/or petioles, the vascular system of these earliest spermatophytes is little understood and available data come mostly from Euramerica.
Wang D, Liu L.
europepmc   +4 more sources

The pharciceratid ammonoids from the Roteisenstein Formation of Dillenburg (Cephalopoda, Ammonoidea)

open access: yesEuropean Journal of Taxonomy, 2021
The ammonoids of the suborder Pharciceratina from the Red Ironstone Formation of the area around Dillenburg (eastern Rhenish Mountains) are revised, mainly based on historical collections stored in the Museum für Naturkunde, Berlin.
Dieter Korn, Jürgen Bockwinkel
doaj   +1 more source

Biostratigraphy, biofacies, and palaeoecology of the Upper Devonian deposits (Khoshyeilagh Formation) based on conodonts in the northeast of Iran (around Bojnord and Jajarm) [PDF]

open access: yesJournal of Stratigraphy and Sedimentology Researches, 2021
In this study, the paleoecology, biostratigraphy, and biofacies of the Khoshyeilagh Formation hve been evaluated based on the found conodont species. The Khoshyeilagh Formation includes terrigenous-carbonate sequences, which contain conodonts of shallow ...
Fatemeh Jafarbeigloo   +4 more
doaj   +1 more source

Fossil evidence of tylosis formation in Late Devonian plants

open access: yesNature Plants, 2023
Tyloses are swellings of parenchyma cells into adjacent water-conducting cells that develop in vascular plants as part of heartwood formation or specifically in response to embolism and pathogen infection. Here we document tyloses in Late Devonian (approximately 360 Myr ago) Callixylon wood. This discovery suggests that some of the earliest woody trees
Decombeix, Anne-Laure   +5 more
openaire   +5 more sources

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