Results 21 to 30 of about 610,735 (240)

Stratigraphic and sedimentological aspects of ichnofabric analysis

open access: yesИзвестия высших учебных заведений: Геология и разведка, 2015
Trace fossils are one of the paleontological groups that could be used for solving complex geological problems. Trace fossils represent the sedimentological structures, produced by living organisms in the mass of sediment.
V. V. Marusin
doaj   +1 more source

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

Virtual fossils: a new resource for science communication in paleontology [PDF]

open access: yes, 2012
Computer-aided 3-D reconstruction of fossils, or virtual paleontology, is an increasingly common and powerful technique. It is now regularly used for research in paleontology, yet to date has impacted little on public outreach and science communication ...
Keith Adcock   +8 more
core   +2 more sources

Martian stick-like structures are not trace fossils: A new protocol for testing ichnogenicity synthesized from paleosol ichnology

open access: yes, 2021
There are different criteria that are usually analysed independently before identifying a new trace fossil, such as morphological regularity, completeness, dispersion, recurrence and complexity, surface morphology, and context.
Genise, Jorge Fernando
core   +1 more source

Trilobite expansion into estuarine environments during the Ordovician radiation [PDF]

open access: yesEstonian Journal of Earth Sciences, 2023
Trilobites have traditionally been considered fully marine. Through the integration of ichnological, palaeobiological and sedimentological datasets within a sequence-stratigraphic and strati­graphic palaeobiology framework, we challenge this assumption.
M. Gabriela Mángano   +5 more
doaj   +1 more source

Trace fossils of an amalgamated storm-bed succession from the Jurassic of the Kachchh Basin, India: The significance of time-averaging in ichnology

open access: yesJournal of Palaeogeography, 2018
The uppermost part of the Upper Bathonian Sponge Limestone member, Patcham Formation, of the Jhura Dome of Kachchh Mainland is a thickening- and shallowing-upward succession topped by medium- to thick-bedded hummocky cross-stratified grainstones ...
Franz T. Fürsich   +3 more
doaj   +1 more source

Precambrian Biota: Protistan Origin of Trace Fossils? [PDF]

open access: yes, 2009
Some Precambrian trace fossils have been presented as evidence for the early origin of bilaterians; the recent finding that large amoeboid protists leave macroscopic traces at the bottom of the deep ocean questions the metazoan nature of early trace ...
Gooday, Andrew J., Pawlowski, Jan
core   +1 more source

Not armour, but biomechanics, ecological opportunity and increased fecundity as keys to the origin and expansion of the mineralized benthic metazoan fauna [PDF]

open access: yes, 2005
This paper offers a new biotic interaction hypothesis for the Cambrian 'explosion' of mineralized, benthic, metazoan diversity. It proposes that organic-mineral composite structures (e.g.
Cohen, B.L.
core   +2 more sources

New hominin remains and revised context from the earliest Homo erectus locality in East Turkana, Kenya

open access: yesNature Communications, 2021
KNM-ER 2598 is one of the oldest known Homo erectus fossils but there are doubts about its age. Here, Hammond et al. trace the original location of the specimen, confirming an age >1.85 million years, and locating additional hominin fossils situated in a
Ashley S. Hammond   +11 more
doaj   +1 more source

Trace fossils from Serpukhovian (Mississipian) sediments of Mospanivska geological structure (Dniper-Donetsk depression)

open access: yesВісник Харківського національного університету імені В.Н. Каразіна. Серія Геологія. Географія. Екологія
Introduction. Exhaustion of large oil and gas deposits leads to exploring smaller geological structures, from which large amount of core cannot be extracted.
Rodion Moiseienko
doaj   +1 more source

Home - About - Disclaimer - Privacy