Results 11 to 20 of about 610,735 (240)

Rhizoliths and the Recognition of Plant and Microbial Trace Fossils

Geosciences
Recognizing a trace fossil as a record of organism–substrate interaction is well agreed upon, but some organisms and some interactions are not considered by some workers to be tracemakers or to have produced trace fossils.
Spencer G. Lucas
doaj   +2 more sources

Trace Fossils, Process, and Documents [PDF]

Proceedings from the Document Academy, 2019
This paper examines fossils as documents. Fossils are informative in the documentary world because they represent the skeletal structures of once-living organisms—therefore, they are the documentary remnants of something that, previously, was a fully ...
Robert Montoya
doaj   +2 more sources

On the findings of trace fossils PHYCOSIPHON in the Triassic of South-Eastern Pamirs

RUDN Journal of Engineering Research, 2014
The article contains description of the burrowing trace fossils Phycosiphon newly discovered in the Upper Triassic of South-Eastern Pamirs and some associated trace fossils. Depositional environments and bathymetry of enclosing sediments were analyzed.
A V Dronov, Y Kh Raimbekov, V B Kushlina
doaj   +1 more source

Palaeoeology sedimentology and depositional environments of the middle lias of North Yorkshire. [PDF]

, 1984
PhDThe shallow marine Yorkshire Middle Lias (Lower Jurassic) sequence comprises two formations, the lowermost (Staithes Formation) consisting of interbedded bioturbated siltstones and thin sheet sandstones and the uppermost (cleveland Ironstone ...
Howard, Andrew Stephen
core   +4 more sources

Trace fossils associated with Burgess Shale non-biomineralized carapaces: bringing taphonomic and ecological controls into focus [PDF]

Royal Society Open Science, 2019
The association of trace fossils and non-biomineralized carapaces has been reported from Cambrian Lagerstätten worldwide, but the abundance, ichnodiversity, taphonomy and ecological significance of such associations have yet to be fully investigated. Two
M. Gabriela Mángano, Christopher David Hawkes, Jean-Bernard Caron   +2 more
doaj   +1 more source

The first animals : ca. 760-million-year-old sponge-like fossils from Namibia [PDF]

, 2012
One of the most profound events in biospheric evolution was the emergence of animals, which is thought to have occurred some 600–650 Ma. Here we report on the discovery of phosphatised body fossils that we interpret as ancient sponge-like fossils and ...
Brain, C.K., Condon, Daniel, Brain, CK, Botha, Andre, Fallick, A., Sturrock, C., Allison, Stuart G., Herd, DA, Prave, A., Fallick, Anthony, Brain, Charles Kimberlin (Bob), Sturrock, Craig, Hoffman, K.H., Allison, Stuart, Allison, SG, Botha, A, Condon, D.J., Botha, A., Allison, S.G., Herd, Donald A., Hoffmann, K-H, Sturrock, C, Prave, Anthony R., Brain, C., Brain, C.K. Bob, Young, I., Condon, Daniel J., Herd, Donald, Herd, D.A., Prave, Anthony, Young, Iain, Prave, AR, Hoffmann, Karl-Heinz, Brain, C. K. 'Bob', Condon, DJ, Fallick, Anthony E., Fallick, AE   +36 more
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Multiple-Rusophycus assemblage from the Parnaíba Basin (NE Brazil) reflects trilobites as tracemakers and molting behavior

Frontiers 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, Daniel Sedorko, Gabriel E. B. de Barros, Gabriel E. B. de Barros, Renata Guimarães Netto, Renato Pirani Ghilardi, Sônia Agostinho, Kimberly Silva Ramos, Kimberly Silva Ramos, Emmanuel Franco Neto, Carlos Alves Moreira Junior, Leonardo Borghi   +11 more
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Dinosaur footprints and other Ichnofauna from the Cretaceous Kem Kem Beds of Morocco [PDF]

, 2014
We describe an extensive ichnofossil assemblage from the likely Cenomanian-age 'lower' and 'upper' units of the 'Kem Kem beds' in southeastern Morocco.
Baidder, Lahssen, Zouhri, Samir, David M Martill, Jeffery A Wilson, Ibrahim, Nizar, Lahssen Baidder, Paul C. Sereno (36583), David J. Varricchio (132149), Dutheil, Didier B., David J Varricchio, Varricchio, David J., Martill, David M., Wilson, Jeff A., Paul C Sereno, Sereno, Paul C., Nizar Ibrahim, Didier B Dutheil, Jeff A. Wilson (531956), Didier B. Dutheil (53097), Samir Zouhri (364453), Samir Zouhri, Lahssen Baidder (364452), Nizar Ibrahim (364450), David M. Martill (364451)   +23 more
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Penetrative trace fossils from the late Ediacaran of Mongolia: early onset of the agronomic revolution [PDF]

Royal Society Open Science, 2018
The Cambrian radiation of complex animals includes a dramatic increase in the depth and intensity of bioturbation in seafloor sediment known as the ‘agronomic revolution’.
Tatsuo Oji, Stephen Q. Dornbos, Keigo Yada, Hitoshi Hasegawa, Sersmaa Gonchigdorj, Takafumi Mochizuki, Hideko Takayanagi, Yasufumi Iryu   +7 more
doaj   +1 more source

Mammillichnis monstrum isp. nov., a new sea anemone trace fossil from the Carboniferous of the Donets Basin, Ukraine

Geo&Bio, 2022
A new ichnospecies Mammillichnis monstrum isp. nov. (Domichnia) is described from turbidite sandstone in the upper part of the Mospyne Formation (late Bashkirian, Early Pennsylvanian) of southern Luhansk Oblast, eastern Ukraine.
Vitaly Dernov
doaj   +1 more source