Results 91 to 100 of about 1,147 (200)

A case for an active eukaryotic marine biosphere during the Proterozoic era. [PDF]

Proc Natl Acad Sci U S A, 2022
Eckford-Soper LK, Andersen KH, Hansen TF, Canfield DE.   +3 more
europepmc   +1 more source

Late Neogene dinoflagellate cyst and acritarch biostratigraphy for Ocean Drilling Program Hole 642B, Norwegian Sea

, 2017
The Arctic is a critical region in the current and past global climate system. One major challenge for investigating the geological history of the Arctic is the establishment of a rigorous chronology.
Mangerud, Gunn, Beck, Kristina Marie, De Schepper, Stijn   +2 more
core   +1 more source

Marine and non-marine palynomorphs from the Ordovician sequence of Takche Formation, Spiti, India

Journal of the Palaeontological Society of India
The palynological investigation of a sequence of the Takche Formation (Middle Ordovician–Early Silurian), Spiti region in the Tethyan Himalaya, reveals new perspectives into Ordovician micro-faunal and floral diversity, palaeoenvironments ...
HUSAIN SHABBAR, SUYASH GUPTA, ANJU SAXENA, KAMAL JEET SINGH   +3 more
doaj   +1 more source

Environmental variables database from a Miocene marine stratigraphic section: A multivariate statistical analysis. [PDF]

Data Brief, 2021
Navarro EL, Estebenet MSG, Guler MV, Fuentes S, Cuitiño JI, Palazzesi L, Panera JPP, Barreda V.   +7 more
europepmc   +1 more source

A review of the Mesozoic – Cenozoic acritarch genus Cyclopsiella Drugg & Loeblich Jr. 1967 emend. nov.

The acritarch genus Cyclopsiella is extant and ranges back to the Middle Jurassic. This genus cannot be assigned to any of the established acritarch subgroups and has a relatively simple morphology; species are often referred to using open nomenclature ...
Soliman, Ali, Smelror, Morten, Riding, James B., El Atfy, Haytham   +3 more
core   +1 more source

The tempo of Ediacaran evolution. [PDF]

Sci Adv, 2021
Yang C, Rooney AD, Condon DJ, Li XH, Grazhdankin DV, Bowyer FT, Hu C, Macdonald FA, Zhu M.   +8 more
europepmc   +1 more source

Litoestratigrafía, Bioestratigrafía y Correlaciones de las Sucesiones Sedimentarias del Neoproterozoico-Cámbrico del cratón del Río de la Plata (Uruguay y Argentina) Litostratigraphy, biostratigraphy and correlations of the sedimentary sucessions of the Neoproterozoic-Cambrian of the Rio de la Plata Craton (Uruguay and Argentina)

Latin American Journal of Sedimentology and Basin Analysis, 2005
Se compara la lito- bio- y quimioestratigrafía de sucesiones sedimentarias del Neoproterozoico del Cratón del Río de la Plata, a saber: Grupo Arroyo del Soldado (GAS), Uruguay y Grupo Sierras Bayas - Formación Cerro Negro (GSB-FmCN) de Tandilia ...
Claudio Gaucher, Daniel G. Poiré, Lucía Gómez Peral, Leticia Chiglino   +3 more
doaj  

A snapshot of mid Eocene landscapes in the southern Central Andes: Spore-pollen records from the Casa Grande Formation (Jujuy, Argentina). [PDF]

PLoS One, 2023
Tapia MJ, Farrell EE, Mautino LR, Del Papa C, Barreda VD, Palazzesi L.   +5 more
europepmc   +1 more source

Cryogenian Glacial Habitats as a Plant Terrestrialisation Cradle - The Origin of the Anydrophytes and Zygnematophyceae Split. [PDF]

Front Plant Sci, 2021
Žárský J, Žárský V, Hanáček M, Žárský V.   +3 more
europepmc   +1 more source

Stratigraphic and paleogeographic significance of an upper Ordovician acritarch flora from the Maquoketa Shale, northeastern Missouri, U.S.A

, 1999
A well-preserved and moderately diverse acritarch assemblage was recovered from the upper Ordovician Maquoketa Shale of northeastern Missouri. Based on graptolite and conodont evidence, the Maquoketa in northeastern Missouri is considered Richmondian ...
Robertson, Eddie B., Robertson, E. B., Wicander, Reed, Wicander, R., Playford, G., Playford, Geoffrey   +5 more
core