Results 11 to 20 of about 852 (169)

Building phenotypic character matrices for phylogenetic inference: exploration of 35 years of practice. [PDF]

open access: yesBiol Rev Camb Philos Soc
ABSTRACT Recent methodological development in phylogenetic inference has focused predominantly on molecular data. However, renewed interest in other data types, particularly morphological data, has followed from the increased recognition of the power of total evidence and tip‐dating approaches, including fossil data, for inference of time‐scaled trees ...
Hopkins MJ   +9 more
europepmc   +2 more sources

Was the Kalkarindji Continental Flood Basalt Province a Driver of Environmental Change at the Dawn of the Phanerozoic?

open access: yesGeophysical Monograph Series, Page 435-447., 2021

Exploring the links between Large Igneous Provinces and dramatic environmental impact

An emerging consensus suggests that Large Igneous Provinces (LIPs) and Silicic LIPs (SLIPs) are a significant driver of dramatic global environmental and biological changes, including mass extinctions.
Peter E. Marshall   +2 more
wiley  

+3 more sources

Phylogeny and evolutionary modularity of a trilobite family over the Ordovician Radiation [PDF]

open access: yesEstonian Journal of Earth Sciences, 2023
Trilobites are organized in packages; the adult trilobite body plan is composed of a cephalon (head), thorax (midsection), and pygidium (tail). These packages, or modules, are composed of traits that evolve semi-independently such that change in one ...
Ernesto E. Vargas-Parra   +1 more
doaj   +1 more source

Early Cambrian (Marianian) trilobites and associated faunas from the Sierra Norte de Sevilla Geopark: A scientific and heritage approach. [PDF]

open access: yesGeoconservation Research, 2021
Some exceptional paleontological trilobite sites located in the Sierra Norte de Sevilla UNESCO Global Geopark are presented herein, together with an analysis of their geotourism / geotrail potential and a proposal for geoconservation.
Eduardo Mayoral Alfaro   +7 more
doaj   +1 more source

A summary of the Brazilian Paraná Basin Ordovician [PDF]

open access: yesEstonian Journal of Earth Sciences, 2023
The study of the Ordovician of Paraná Basin culminated on the three-fold lithostratigraphic subdivision of the Rio Ivaí Group as follows: Alto Garças, Iapó and Vila Maria formations.
Carolina Zabini   +11 more
doaj   +1 more source

Early Silurian (Llandovery) Trilobite fauna from [PDF]

open access: yesJournal of Sciences, Islamic Republic of Iran, 2020
The aim of this study is to analyze the assemblage of trilobites in the Silurian sequences of Iran by exploring stratigraphic section of the Silurian Niur Formation (Asadli section).
Hamed Ameri
doaj   +1 more source

Systematics, morphology, and appendages of an Early Ordovician pilekiine trilobite Anacheirurus from Fezouata Shale and the early diversification of Cheiruridae [PDF]

open access: yesActa Palaeontologica Polonica, 2021
Pilekiines are the earliest diverging members of the successful trilobite family Cheiruridae. The pilekiine genus Anacheirurus is characterized by sub-quadratic to sub-oval glabella, pitted genae, and a distinct trunk with elongated pleural spines in ...
FRANCESC PÉREZ-PERIS   +3 more
doaj   +1 more source

Injuries and molting interference in a trilobite from the Cambrian (Furongian) of South China [PDF]

open access: yesPeerJ, 2021
An injured Shergoldia laevigata Zhu, Hughes & Peng, 2007 (Trilobita, Asaphida) was collected from the Furongian of Guangxi, South China. The injuries occurred in the left thoracic pleurae possessing two marked V-shaped gaps.
Ruiwen Zong
doaj   +2 more sources

Trilobite expansion into estuarine environments during the Ordovician radiation [PDF]

open access: yesEstonian Journal of Earth Sciences, 2023
Trilobites have traditionally been considered fully marine. Through the integration of ichnological, palaeobiological and sedimentological datasets within a sequence-stratigraphic and strati­graphic palaeobiology framework, we challenge this assumption.
M. Gabriela Mángano   +5 more
doaj   +1 more source

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