Molecular time trees indicating that embryophytes originated around 500 million years ago
(Ma) during the Cambrian are at odds with the record of fossil plants, which first appear in …

The Nonesuch Formation in the clastic sedimentary Oronto Group on the Keweenaw
Peninsula of the Upper Peninsula, Michigan, USA most likely represents an ancient lake that …

The fossil record indicates a major turnover in marine phytoplankton across the Ediacaran–
Cambrian transition, coincident with the rise of animal-rich ecosystems. However, the …

Samples from the Devonian succession in the Sifa-1X well located mid-way between the
Egyptian Faghur Basin and the Libyan Cyrenaica Platform were examined in this study. The …

Abstract Pre-Darriwilian (Middle Ordovician) spore-like palynomorphs are significant in
understanding the plant origination and the evolutionary transition from algae to land plants …

Monogeneric clusters of five acritarch genera (Adara, Cymatiosphaera, Eliasum,
Synsphaeridium and Timofeevia) were discovered in palynological residues obtained from …

We present a preliminary assessment of a new Lower Devonian biota from an exposure of
the Zagórze Formation at Bukowa Góra quarry in the Łysogóry Region of the Holy Cross …

The oldest reported occurrence of cryptospores supposed to derive from land plants
(embryophytes) is currently considered to be in the Middle Ordovician. The two genera …

Abstract The Ordovician-Silurian hot shales are proved to be source for hydrocarbon in
Akkas Field. New set of core samples of these important strata from Khabour and Akkas …

The present study involves the palynological analysis of Late Ordovician–early Silurian
samples coming from two wells drilled in the Llanos Basin of Colombia. Thirteen core …