Results 31 to 40 of about 60,314 (301)

Digitizing the Sedimentary Record: Efficient Data Structures for Dynamic Stratigraphy

Journal of Algorithms & Computational Technology, 2007
As the surface of the Earth evolves over geologic time sediment is transported from high mountains to low lying sedimentary basins, accumulating stratigraphy which stores a sedimentary record of past environments.
Matthew A. Wolinsky
doaj   +1 more source

Chronostratigraphy of the upper Sinemurian of NW Iberia: New data for global correlations

Geogaceta
A comprehensive review of the ammonoid succession of the upper Sinemurian, Oxynotum and Raricostatum zones, in NW Iberia is presented herein. A total of 1632 specimens were studied.
Íñigo Vitón, María José Comas Rengifo, Antonio Goy   +2 more
doaj   +1 more source

Probabilistic Flood Hazard Maps from Monte Carlo Derived Peak Flow Values—An Application to Flood Risk Management in Zamora City (Spain)

Applied Sciences, 2021
All flood hazard and risk assessment suffer from a certain degree of uncertainty due to multiple factors, such as flood frequency analysis, hydrodynamic model calibration, or flood damage (magnitude–damage functions) models. The uncertainty linked to the
Julio Garrote, Evelyng Peña, Andrés Díez-Herrero   +2 more
doaj   +1 more source

New techniques for old bones: Morphometric and diffeomorphometric analysis of the bony labyrinth of the Reilingen and Ehringsdorf Neandertals

The Anatomical Record, EarlyView.
Abstract Neandertals are known to possess very distinctive traits in their bony labyrinth morphology, such as an inferiorly positioned posterior canal and a very low number of turns in the cochlea. Hence, the inner ear has been often used to assess the Neandertal status of fragmentary fossils.
Alessandro Urciuoli, Julia Diez‐Valero, Ignacio Martínez, Rolf Quam, Brian A. Keeling, Nicole M. Webb, Mercedes Conde‐Valverde   +6 more
wiley   +1 more source

Plant- and micromammal-based paleoprecipitation proxies: Comparing results of the Coexistence and Climate-Diversity Approach [PDF]

, 2016
Both plant and vertebrate communities have been used to reconstruct paleoprecipitation. However, direct stratigraphic comparisons between the two types of proxies have hardly been performed, which is due to the fact that plant and vertebrate fossils ...
van Dam, Jan A., Stratigraphy & paleontology, Stratigraphy and paleontology, Utescher, Torsten   +3 more
core   +1 more source

A tiny Cambrian stem-mandibulate reveals independent evolution of limb tagmatization and specialization in early euarthropods

Scientific Reports
The mandibulate euarthropods are the most speciose animal group, but the evolutionary gaps in origin of mandibulate body plan remain unresolved. Marrellomorphs, a common Paleozoic euarthropod group, had a long evolutionary history from Cambrian to ...
Yao Liu, Han Zeng, Fangchen Zhao, Yuyan Zhu, Yimeng Li, Zongjun Yin, Maoyan Zhu   +6 more
doaj   +1 more source

Remastering legacy seismic sections: A user-friendly toolkit for vectorization, velocity modeling, and processing

Applied Computing and Geosciences
Scanned images of legacy seismic reflection sections often provide the only available subsurface information in many regions. Their scientific reuse requires the original seismic data to be vectorized: converting digital raster images into standard SEG-Y
A. Pertuz, M.I. Benito, P. Llanes, P. Suarez-Gonzalez, M. García-Martín   +4 more
doaj   +1 more source

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

The 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, Phil R. Bell, Ian Baylatry, Robin Sissons, Corwin Sullivan   +4 more
wiley   +1 more source

The cranial, mandibular, and hyoid anatomy of softshell turtles (Trionychidae): A revised character list for phylogenetic analysis

The Anatomical Record, EarlyView.
Abstract Softshell turtles (Pan‐Trionychidae) are an early branching clade of hidden‐necked turtles (Cryptodira) with a rich fossil record extending back to the Early Cretaceous. The evolutionary history of softshell turtles is still unresolved because of their conservative morphology combined with high levels of polymorphism related to morphological ...
Léa C. Girard, Walter G. Joyce
wiley   +1 more source

Stratigraphy and Geochemistry of the Vossenveld Formation [PDF]

, 2019
The Winterswijkse Steengroeve quarry complex in the east of the Netherlands exposes a ~ 40 m thick sedimentary sequence of intertidal and shallow marine deposits of the Vossenveld Formation dated as Anisian (early Middle Triassic).
Voeten, Dennis, Abadi, Mehrdad Sardar, Smit, Jan, Reijmer, John J.G., Stratigraphy & paleontology, van der Lubbe, Jeroen H.J.L., Schulp, A.S., Verdegaal-Warmerdam, Suzan, Pietersen, Jarmo, Stratigraphy and paleontology, During, Melanie A.D.   +10 more
core