Results 261 to 270 of about 949,321 (287)

Exceptional preservation of angiosperm markers in Miocene and Eocene ambers

Geology, 2013
The traditional organic geochemical view suggests that polar triterpenoids are degraded easily during fossilization of organic matter. For the first time, we show that dammarane-type tetracyclic polar triterpenoids are preserved in the geosphere. Hydroxydammarenone (20-hydroxy-24-dammaren-3-one), a typical constituent of extant Dipterocarpaceae (an ...
DUTTA, S, SAXENA, R, SINGH, H
openaire   +2 more sources

EXCEPTIONAL PRESERVATION OF PLANTS AND INVERTEBRATES BY PHOSPHATIZATION, RIVERSLEIGH, AUSTRALIA

PALAIOS, 2008
Abstract Phosphatic concretions containing mineralized three-dimensional plant and invertebrate tissues occur in a mid-Cenozoic terrestrial freshwater carbonate deposit at the Riversleigh World Heritage area in northwestern Queensland, Australia.
openaire   +1 more source

Exceptional preservation of frogs from the Spanish Miocene.

2017
Peer ...
McNamara, Maria E., Peñalver Mollá, Enrique, Orr, P. J., Alcalá, Luis, Anadón, Pere   +4 more
openaire   +1 more source

Exceptional preservation of a marine tapeworm tentacle in Cretaceous amber

Geology
Abstract Parasites are ubiquitous in extant ecosystems but rarely preserved in the geological record, especially parasitic worms (helminths). One such group is Cestoda (tapeworms), a specialized endoparasitic group of platyhelminths (flatworms).
Cihang Luo, Harry W. Palm, Yuhui Zhuang, Edmund A. Jarzembowski, Thet Tin Nyunt, Bo Wang   +5 more
openaire   +1 more source

Exceptional Preservation and Bias in the Fossil Record

2019
The three projects described herein focus on two instances of exceptional preservation and on potential source of bias in the fossil record. The occurrence of exceptionally preserved fossil assemblages and the existence of systematic bias in the fossil record from a variety of sources represent opposing forces acting on the information quality of the ...
openaire   +1 more source

Does Distance Deter Male Fertility Preservation?

Ca-A Cancer Journal for Clinicians, 2023
Mike Fillon
exaly  

Locally Advanced Rectal Adenocarcinoma: Treatment Sequences, Intensification, and Rectal Organ Preservation

Ca-A Cancer Journal for Clinicians, 2021
Seth I Felder, Ibrahim Halil Sahin, Iman Imanirad   +2 more
exaly  

High Productivity Promoted Exceptional Fossil Preservation of the Early Middle Triassic Luoping Biota of Yunnan Province, China

Palaeogeography, Palaeoclimatology, Palaeoecology, 2022
Shi-Xue Hu, Xiting Liu, Jinyuan Huang
exaly  

EXCEPTIONAL PRESERVATION IS NOT THAT EXCEPTIONAL: NEOPROTEROZOIC-TO-RECENT FOSSILS SHARE THE SAME MECHANISM OF BIOMOLECULE FOSSILIZATION

Geological Society of America Abstracts with Programs, 2020
Jasmina Wiemann, Derek E.G. Briggs
openaire   +1 more source

The Link Between Exceptional Fossil Preservation and Palaeo-Redox Conditions in the Middle Triassic Luoping Biota From South China

Geological Journal, 2021
zhixin Ma, Shi-Xue Hu, Xiting Liu
exaly