Results 11 to 20 of about 2,938 (213)

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   +2 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   +2 more sources

Trilobite Eyes and Their Evolution

open access: yesArthropoda
Trilobites, as typical euarthropods, possess compound eyes. In 1901, Lindström was the first to describe them in detail; on the one hand, we reconsider his descriptions of the different modes of trilobite eyes; on the other hand, we expand this by ...
Brigitte Schoenemann
doaj   +2 more sources

Trilobite

open access: yesEllipsis A Journal of Art Ideas and Literature
The Trilobite(?). Deseret, Utah. On a dark red, hard lava (or basalt) about six to eight miles southwest of the town of Deseret, Millard County, Utah. This is locally called "The Lava Flow," and "Black Rock" on the USGS topographic maps. Pecked, none
Beckwith, Frank Asahel, 1876-1951
core   +3 more sources

Quantification of leg mobility in the Burgess Shale Olenoides serratus indicates functional differences between trilobite and xiphosuran appendages [PDF]

open access: yesBMC Biology
Background Euarthropod appendages are specialized for diverse roles including feeding, walking, and mating, which require precise morphologies and ranges of motion.
Sarah R. Losso   +3 more
doaj   +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

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

Uniquely preserved gut contents illuminate trilobite palaeophysiology. [PDF]

open access: yesNature, 2023
Trilobites are among the most iconic of fossils and formed a prominent component of marine ecosystems during most of their 270-million-year-long history from the early Cambrian period to the end Permian period1.
Kraft P   +5 more
europepmc   +2 more sources

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

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