Results 21 to 30 of about 651,381 (291)

Multiple-Rusophycus assemblage from the Parnaíba Basin (NE Brazil) reflects trilobites as tracemakers and molting behavior

open access: yesFrontiers in Ecology and Evolution, 2023
Trilobites inhabited all environments of Paleozoic seas, ranging from estuaries to continental slopes, and were globally distributed. Although their functional morphology and phylogenetic relations are established by well-preserved body fossils, the ...
Daniel Sedorko   +11 more
doaj   +1 more source

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

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

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, Jorge F. Genise
core   +1 more source

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

Ichnotaxonomic assessment of Mazon Creek area trace fossils, Illinois, USA [PDF]

open access: yes, 2010
The Francis Creek Shale Member (FCSM) of the Mid-Pennsylvanian Carbondale Formation along Mazon Creek in northern Illinois is known for soft-bodied organisms preserved within siderite concretions.
LoBue, David J.
core   +1 more source

Cretaceous ophiuropod trace fossils from the Neuquén Basin, Argentina

open access: yes, 2007
This paper reports the facies analysis and ichnology of a logged section in the lower part of the Mulichinco Formation (Early Valanginian), at Vega de Escalone in the Neuquén Basin, western Argentina.
Pablo J. Pazos   +5 more
core   +1 more source

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