Results 31 to 40 of about 8,076 (186)

First record of Telephina (Trilobita) from the Ordovician of northeastern Estonia and its stratigraphical implications [PDF]

open access: yesEstonian Journal of Earth Sciences, 2011
For the first time a telephinid trilobite was recorded from the shallow-water rocks of the North Estonian Confacies Belt in the oil-shale mining area of northeast Estonia.
Helje Pärnaste, Adrian Popp
doaj   +1 more source

Sequence stratigraphy, chemostratigraphy and facies analysis of Cambrian Series 2 – Series 3 boundary strata in northwestern Scotland [PDF]

open access: yes, 2016
Globally, the Series 2 – Series 3 boundary of the Cambrian System coincides with a major carbon isotope excursion, sea-level changes and trilobite extinctions.
Faggetter, Luke   +14 more
core   +1 more source

Cambrian Trilobites [PDF]

open access: yesProceedings of the National Academy of Sciences, 1916
USNM ...
openaire   +2 more sources

The development of the Silurian trilobite Aulacopleura koninckii reconstructed by applying inferred growth and segmentation dynamics: A case study in paleo-evo-devo [PDF]

open access: yes, 2017
Fossilized growth series provide rare glimpses into the development of ancient organisms, illustrating descriptively how size and shape changed through ontogeny.
Fusco, Giuseppe   +3 more
core   +2 more sources

CONODONTS FROM THE WA’ERGANG SECTION, CHINA, A POTENTIAL GSSP FOR THE UPPERMOST STAGE OF THE CAMBRIAN

open access: yesRivista Italiana di Paleontologia e Stratigrafia, 2017
Furongian (upper Cambrian) conodonts from the Shenjiawan Formation, Wa’ergang section, Taoyuan County, Hunan Province, South China are described. The Wa’ergang section has been proposed as a potential GSSP for the base of the uppermost stage of the ...
GABRIELLA BAGNOLI   +3 more
doaj   +1 more source

An in situ shelly fauna from the lower Paleozoic Zapla diamictite of northwestern Argentina: implications for the age of glacial events across Gondwana [PDF]

open access: yes, 2015
A shelly fauna from the upper part of the Zapla glacial diamictite includes thelingulate brachiopod Orbiculoidea radiata Troedsson, the rhynchonelliforms Dalmanella cf. testudinaria (Dalman) and Paromalomena sp., the bivalve Modiolopsis?
Benedetto, Juan Luis Arnaldo   +3 more
core   +2 more sources

Microstructure and growth of the lenses of schizochroal trilobite eyes [PDF]

open access: yes, 2013
Lenses within the schizochroal eyes of phacopine trilobites are made principally of calcite and characterisation of them using light microscopy and high-resolution electron imaging and diffraction has revealed an array of microstructural arrangements ...
Lee, Martin R.   +2 more
core   +1 more source

Upper lower Cambrian (provisional Cambrian Series 2) trilobites from northwestern Gansu Province, China [PDF]

open access: yesEstonian Journal of Earth Sciences, 2014
Upper lower Cambrian (provisional Cambrian Series 2) trilobites are described from three sections through the Shuangyingshan Formation in the Beishan area, northwestern Gansu Province, China. The trilobite fauna is dominated by eodiscoid and corynexochid
Jan Bergström†   +3 more
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  

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

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