Results 21 to 30 of about 809 (126)

The ‘historical’ collection of fossil invertebrates from Lower Palaeozoic deposits of the Bohemian Massif (Czeсh Republic) as an object of scientific and cultural heritage

open access: yesGeo&Bio, 2022
The years 2022 marks the 95th anniversary of the foundation of the Geological Museum, the predecessor of the Department of Geology of the National Museum of Natural History NAS of Ukraine.
Galina Anfimova
doaj   +1 more source

The earliest Ordovician trace fossils Cruziana and Rusophycus from Baltica [PDF]

open access: yesEstonian Journal of Earth Sciences, 2023
Trace fossils of the ichnogenera Cruziana and Rusophycus are described for the first time from the Lower Ordovician of Baltica. These specimens were found from the upper Tremadocian−lower Floian glauconite sandstone of the Leetse Formation in the ...
Helje Pärnaste   +2 more
doaj   +1 more source

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

Revisión sistemática del trilobite oryctocefálido Protoryctocephalus arcticus Geyer & Peel, 2011 del Cámbrico inferior (Piso 4) de Balang, China meridional

open access: yesEstudios Geologicos, 2019
Los trilobites oryctocefálidos del tránsito ‘Cámbrico inferior-medio’ representan herramientas clave para la correlación internacional. Las zonas de trilobites en China meridional a través del tránsito Serie cámbrica 2-Miaolingiense se basan en este ...
J. Esteve, Y. L. Zhao, X. L. Yang
doaj   +1 more source

Una nueva sección fosilífera de la Formación Sueve (Ordovícico Medio) al suroeste del Túnel Ordovícico del Fabar (Ribadesella, Asturias, NO de España)

open access: yesGeogaceta, 2022
Se presenta una nueva sección bioestratigrafica de la parte basal de la Formación Sueve. La nueva sección se suma a las nueve secciones descritas en estudios previos, relativos al sector septentrional del manto de Laviana.
Enrique Bernárdez   +2 more
doaj   +1 more source

Permian trilobites and the applicability of the “living fossil” concept to extinct clades

open access: yesFrontiers in Ecology and Evolution, 2023
Some taxa occupy our imaginations as “living fossils” because they were known from the fossil record before being discovered alive today. Other taxa are considered “living fossils” because modern relatives bear a strong morphological resemblance to ...
Melanie J. Hopkins   +3 more
doaj   +1 more source

The oldest known digestive system consisting of both paired digestive glands and a crop from exceptionally preserved trilobites of the Guanshan Biota (Early Cambrian, China). [PDF]

open access: yesPLoS ONE, 2017
The early Cambrian Guanshan biota of eastern Yunnan, China, contains exceptionally preserved animals and algae. Most diverse and abundant are the arthropods, of which there are at least 11 species of trilobites represented by numerous specimens.
Melanie J Hopkins   +3 more
doaj   +1 more source

Revisión del enrollamiento en los trilobites del Cámbrico español y su implicación en la evolución de los trilobites

open access: yesEstudios Geologicos, 2013
Los trilobites del Cámbrico medio encontrados en Purujosa y otras localidades de las Cadenas Ibéricas como Murero y Mesones (Zaragoza) poseen un gran número de nuevas estructuras de enrollamiento, así como tipos de enrollamiento que previamente no se ...
Jorge Esteve
doaj   +1 more source

The occurrence of Phacopida trilobites from Pimenteira Formation at João Costa, Piauí, Brazil [PDF]

open access: yesGeologia USP. Série Científica, 2013
The marine macroinvertebrate fossils from the Devonian of the Parnaíba Basin are among the most diverse of Paleozoic of Brazil. In recent years, most revisions on these fossils involved trilobites from the Pimenteira and Cabeças formations, in the ...
Juliana de Moraes Leme   +3 more
doaj   +1 more source

Enrollamiento en Conocoryphe heberti Munier-Chalmas & Bergeron, 1889 (Cámbrico Medio, Cadena Ibérica, NE de España) y estructuras coaptativas en la familia Conocoryphidae

open access: yesEstudios Geologicos, 2009
Se describe por primera vez en detalle el enrollamiento de Conocoryphe heberti y se compara con el posible enrollamiento de Occatharia sdzuyi, ambas son especies de conocorífidos abundantes en el Cámbrico medio de la subprovincia Mediterránea.
J. Esteve
doaj   +1 more source

Home - About - Disclaimer - Privacy