Results 41 to 50 of about 2,938 (213)

Shelly fossils from the lower Cambrian White Point Conglomerate, Kangaroo Island, South Australia [PDF]

open access: yesActa Palaeontologica Polonica, 2019
The lower Cambrian (Series 2) White Point Conglomerate (WPC) on Kangaroo Island, South Australia contains exotic clasts representing a diverse array of lithologies, including metamorphics, chert, sandstone, and abundant carbonates, notably archaeocyath ...
Marissa J. Betts   +5 more
doaj   +1 more source

Implications of Timanian thrust systems in the Barents Sea and Svalbard on using paleontological constraints for plate tectonics reconstructions [version 1; peer review: 1 approved, 2 approved with reservations]

open access: yesOpen Research Europe, 2023
Background The Svalbard Archipelago is commonly believed to have been located at comparable latitude and, possibly, to have been attached to Laurentia in the early Paleozoic (500–420 Ma) based on trilobite assemblage similarities.
Jean-Baptiste P. Koehl
doaj   +1 more source

Pseudophillipsia (Carniphillipsia) (Trilobite) from the Permian Jamal Formation, Isfahan, Iran [PDF]

open access: yesJournal of Sciences, Islamic Republic of Iran, 2017
The aim of this study is to bridge a gap in the existence of Trilobites in the marine Permian successions of Iran by exploring a stratigraphic section of the Permian in Jamal Formation (Dizlu section).  Based on comprehensive field studies and laboratory
H. Ameri, M. Yazdi, A. Bahrami
doaj  

Palaeozoic correlations and the Palaeogeography of the Sibumasu (Shan-Thai) Terrane - a brief review [PDF]

open access: yesResearch & Knowledge, 2016
Furongian sandstones yield shallow-water trilobite faunas along the length of the Sibumasu Terrane in the four regions of NW Malaysia (Langkawi), southern Thailand (Satun), the Shan States of Myanmar and the Baoshan Block of western Yunnan.
Clive Burrett   +2 more
doaj   +1 more source

Stratigraphy and Palaeontology of Trilobites in Kuhbanan Formation in the Akbar-Abad Section (North of Kerman) [PDF]

open access: yesJournal of Sciences, Islamic Republic of Iran, 2010
Cambrian sedimentary facies are exposed throughout north part of Kerman region. Trilobites’ faunas are the most common invertebrate fossils within the Cambrian strata. The section is made of 217 m of sandstone, shale, limestone and dolomite.
H. Ameri
doaj  

Revison of an Atheloptic Visean Trilobite Association in the Moravian Karst (Czech Republic)

open access: yesGeologica Carpathica, 2015
Recently two new trilobite occurrences were discovered during geological mapping of fossiliferous shales of the Březina Formation around the village of Březina in the Moravian Karst (Czech Republic).
Rak Štěpán   +2 more
doaj   +1 more source

Insights into a 429-million-year-old compound eye

open access: yesScientific Reports, 2020
In all arthropods the plesiomorphic (ancestral character state) kind of visual system commonly is considered to be the compound eye. Here we are able to show the excellently preserved internal structures of the compound eye of a 429 Mya old Silurian ...
Brigitte Schoenemann   +1 more
doaj   +1 more source

Controls on gut phosphatisation : the trilobites from the Weeks Formation Lagerstätte (Cambrian; Utah)

open access: yes, 2012
Despite being internal organs, digestive structures are frequently preserved in Cambrian Lagerstätten. However, the reasons for their fossilisation and their biological implications remain to be thoroughly explored.
Hegna, Thomas A.   +18 more
core   +1 more source

Post-Ordovician trilobite diversity and evolutionary faunas

open access: yes, 2022
Trilobites were the most successful clade of marine invertebrates during the Cambrian, as highlighted by Sepkoski’s Cambrian Evolutionary Fauna. After the Cambrian they were still abundant, widespread and highly diversified.
Monnet, Claude   +3 more
core   +1 more source

Exceptionally preserved Cambrian trilobite digestive system revealed in 3D by synchrotron-radiation X-ray tomographic microscopy. [PDF]

open access: yesPLoS ONE, 2012
The Cambrian 'Orsten' fauna comprises exceptionally preserved and phosphatised microscopic arthropods. The external morphology of these fossils is well known, but their internal soft-tissue anatomy has remained virtually unknown.
Mats E Eriksson, Fredrik Terfelt
doaj   +1 more source

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