Results 51 to 60 of about 1,138 (207)

Mammal tooth traces in a ferruginous cave in southeastern Brazil and their relevance to cave legal protection

open access: yesAnais da Academia Brasileira de Ciências
: We describe the first occurrence of biogenic traces made by mammals within an iron formation cave located in the Serra da Ferrugem Ridge, in Southeastern Brazil.
ANDRÉ G. VASCONCELOS   +2 more
doaj   +1 more source

La grotte de Cussac (Dordogne)

open access: yesLes Nouvelles de l’Archéologie, 2019
The recently discovered (2000) Cussac Cave is one of the major elaborately decorated caves for which the Ministry of Culture immediately invoked protective measures, including climatic controls and land and equipment purchases.
Jacques Jaubert   +6 more
doaj   +1 more source

Re‐evaluation of a soft crested Edmontosaurin, with implications for hadrosaurid life appearance and diversity

open access: yesThe Anatomical Record, EarlyView.
Abstract Hadrosaurid dinosaurs are generally regarded as “crested” or “non‐crested” depending on the presence or absence of a bony cranial crest. At least one supposedly “non‐crested” hadrosaur is known to have possessed a soft tissue cranial crest (or comb), based on an exceptionally preserved “mummified” specimen. Here we redescribe this specimen and
Henry S. Sharpe   +4 more
wiley   +1 more source

Columnanidus calitzdorpensis ichnogen. ichnosp. nov: A new Middle Pleistocene subterranean termite trace fossil from South Africa

open access: yesJournal of Quaternary Science, EarlyView.
ABSTRACT Termites are landscape geo‐engineers whose nesting activities substantially modify the physical and chemical properties of soils. Fossilised termite nests commonly constitute the only identifiable evidence of ancient termite activity and represent valuable trace fossil archives for reconstructing past environments.
Miengah Abrahams   +7 more
wiley   +1 more source

Ichnological analysis and paleoenvironmental inferences of Neogene meandering fluvial deposits in Continental Rift of Southeastern Brazil

open access: yesBrazilian Journal of Geology
The sedimentary basins in the Continental Rift of Southeastern Brazil (CRSB) provide an opportunity for ichnological analyses due to its well-known facies relationships and paleoenvironmental interpretations. This study reports invertebrate trace fossils
Daniel Sedorko   +6 more
doaj   +1 more source

The effects of bioturbation on porewater chemistry and early marine diagenesis: Evidence from a modern intertidal zone in Abu Dhabi, U.A.E.

open access: yesSedimentology, EarlyView.
ABSTRACT Early marine carbonate cements generally form in CaCO3‐supersaturated seawater at the seabed or shallow burial depths, resulting in syn‐sedimentary cemented firmgrounds and hardgrounds. The processes controlling early marine diagenesis are complex, particularly in coastal environments where geochemistry is influenced by different water sources
Drew Brown   +7 more
wiley   +1 more source

From alluvial fans to lacustrine systems: trace fossils applied to paleoenvironmental analysis in the Taubaté Basin (Brazil) [PDF]

open access: yesBrazilian Journal of Geology
Studies integrating ichnology and sedimentology in paleoenvironmental interpretations are rare in Brazilian rift successions. This study applies an integrated ichno-sedimentological analysis to a well core from the Resende and Tremembé Formations ...
Vittor Cambria   +4 more
doaj   +2 more sources

Taenidium barretti Bradshaw, 1981 in the Malhada Vermelha Formation (Lower Cretaceous), Malhada Vermelha Basin, Ceará, Brazil [PDF]

open access: yesAnuário do Instituto de Geociências, 2019
The invertebrate trace fossil record in the Malhada Vermelha Basin, although recognized, is quite sparse and poor from the Systematic Ichnology approach.
João Victor Paula Moreira   +4 more
doaj   +1 more source

Laurasian Seaway History During the Early Jurassic From Quantitative Mineralogy and Detrital Zircon Dating

open access: yesPaleoceanography and Paleoclimatology, Volume 41, Issue 6, June 2026.
Abstract The Laurasian Seaway comprises a N‐S oriented trans‐Pangaean corridor linking Tethys to the Boreal Sea during the Jurassic, and direction of water flow has been the subject of considerable debate. The Llanbedr (Mochras Farm) borehole, Cardigan Bay Basin, Wales, is a uniquely informative record that comprises an expanded deep‐marine silty ...
M. Jiang   +7 more
wiley   +1 more source

ROLE OF ICHNOLOGY IN THE HISTORY OF PHOTOGRAPHY

open access: yes, 2018
Vertebrate ichnology in North America has a long and distinguished history, starting with the remarkable discoveries by Edward Hitchcock of dinosaur footprints and trackways in the Connecticut River Valley. Hitchcock assembled a unique collection that is
ERIN A. PEMBERTON, S. GEORGE PEMBERTON
core   +1 more source

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