Results 31 to 40 of about 12,716 (136)

Validating a Target-Enrichment Design for Capturing Uniparental Haplotypes in Ancient Domesticated Animals. [PDF]

open access: yesMol Ecol Resour
ABSTRACT In the last three decades, DNA sequencing of ancient animal osteological assemblages has become an important tool complementing standard archaeozoological approaches to reconstruct the history of animal domestication. However, osteological assemblages of key archaeological contexts are not always available or do not necessarily preserve enough
More KD   +64 more
europepmc   +2 more sources

Oxfordian and Kimmeridgian "Aspidoceras" in the Mediterranean. A methodological approach

open access: yesEstudios Geologicos, 1987
En el presente trabajo se lleva a cabo un análisis contrastador de la Hipótesis Nula establecida como base metodológica para la investigación evolutiva de los"Aspidoceras" mediterráneos (Checa & Olóriz, 1985).
A. Checa, F. Olóriz
doaj   +1 more source

El sector más occidental de la Formación de Los Navalucillos, Cámbrico inferior: microbialitas en yacimientos mareales de la Zona Centroibérica, Monte de Toledo, España

open access: yesEstudios Geologicos, 2019
En la Zona Centroibérica del Macizo Ibérico, la Formación de Los Navalucillos, interpretada como depósitos carbonatados mareales y de aguas someras, contiene un importante conjunto faunístico de arqueociatos.
S. Menéndez   +3 more
doaj   +1 more source

Una revisión de la geología y evolución tectónica cenozoicas de la Mesa Central de México

open access: yesRevista Mexicana de Ciencias Geológicas, 2023
La Mesa Central (MC) de México es una provincia fisiográfica que consiste en una región elevada, con cotas promedio ~2000 m s.n.m. Dentro de ella se distinguen dos zonas con morfología distinta, la parte norte con grandes planicies y cerros bastante ...
Angel Francisco Nieto-Samaniego   +8 more
doaj   +1 more source

Widespread distribution of large silesaurids evidenced by a new record from the Middle Triassic of southwest Gondwana

open access: yesThe Anatomical Record, EarlyView.
The largest silesaurid known from South America is described here, demonstrating that silesaurids reached large body sizes in southwestern Gondwana. This discovery further underscores the widespread geographic distribution and temporal persistence of large silesaurids across Pangea, despite faunal turnovers and environmental events such as the Carnian ...
Rodrigo Temp Müller
wiley   +1 more source

Interaction between fluvial systems and alluvial fans over the Gorafe Unconformity (Granada Geopark): integration of digital outcrop model and facies analysis

open access: yesGeogaceta
The Gorafe Unconformity, located in the central sector of the Guadix-Baza Basin (Granada Geopark), represents a key outcrop to analyze the transition from compressive tectonics to Pliocene–Quaternary sedimentation in the central sector of the Betic ...
Paula Rodríguez Fernández   +3 more
doaj   +1 more source

Revisión de la sucesión de la Sierra de la Zarzuela: último registro del Ediacárico-¿Fortuniense inferior? del Gran Anticlinorio Extremeño central, Zona Centroibérica meridional, Macizo Ibérico, España

open access: yesEstudios Geologicos, 2019
En la Zona Centroibérica meridional se reconoce la sucesión más completa de rocas del Ediacárico tardío que afloran en el sinclinal de la Sierra de la Zarzuela, discordantes sobre el Supergroup del Alcudiense inferior-Domo Extremeño.
A. P. Pieren, M. Rodríguez-Martínez
doaj   +1 more source

The complex case of Macaronichnus trace fossil affecting rock porosity

open access: yesScientific Reports, 2021
Bioturbation is an important factor for reservoir quality due to the modification of host rock petrophysical properties (i.e., porosity, permeability, and connectivity). However, there is no predictable relationship between bioturbation and its effect on
Javier Dorador   +2 more
doaj   +1 more source

A new occurrence of tetrapod footprints from the Late Triassic of the Candelária Sequence, Brazil

open access: yesThe Anatomical Record, EarlyView.
Abstract The Hyperodapedon Assemblage Zone of the Candelária Sequence (Santa Maria Supersequence, Paraná Basin) preserves one of the most significant Late Triassic continental vertebrate assemblages in southern Brazil. Despite the relatively well‐documented body fossil record from this interval, ichnological records remain comparatively scarce.
Murilo Andrade‐Silva   +1 more
wiley   +1 more source

Principios de estratigrafía [PDF]

open access: yes, 2002
Luego de consultar muchos textos de estratigrafía se escogieron como referencias básicas los libros de Boggs 1995 y Homewood et al 2000, ya que estos corresponden a amplias recopilaciones bibliográficas que incluyen todos los conceptos modernos de la ...
Blandón Montes, Astrid
core  

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