Results 31 to 40 of about 205 (136)

Die Gattung Erratencrinurus Krueger, 1971 (Trilobita; Ordovizium) aus baltoskandischen Geschieben [PDF]

open access: yesFossil Record, 2004
Aus der mittel- bis oberordovizischen Trilobitenfamilie Encrinuridae, die in Baltoskandia durch die Untergattungen Erratencrinurus und Celtencrinurus repräsentiert wird, werden achtzehn Arten beschrieben, darunter die vier neuen Arten Erratencrinurus (E.)
H.-H. Krueger
doaj   +3 more sources

New agnostina (Trilobita) from the Llanvirn (Ordovician) of Spain

open access: yesEstudios Geologicos, 1985
Se estudian los trilobites agnóstidos procedentes de nueve localidades, siete de ellas nuevas para estas faunas, situadas en las pizarras del Llanvirn inferior de la parte meridional de la Zona Centroibérica (Montes de Toledo, Villuercas y región de ...
I. Rábano, H. Pek, J. Vaněk
doaj   +1 more source

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

Hirnantia sagittifera (Brachiopoda) and Mucronaspis mucronata s.l. (Trilobita) in the Upper Ordovician of the East Baltic: taxonomy and distribution [PDF]

open access: yesEstonian Journal of Earth Sciences, 2012
The brachiopod Hirnantia sagittifera (M’Coy) and trilobite morphs of the genus Mucronaspis from the topmost Ordovician Porkuni Stage of the central East Baltic are described and compared with those from the Hirnantian Stage of other regions.
Linda Hints   +2 more
doaj   +1 more source

Metacryphaeus rotundatus, um novo elemento da fauna de trilobites calmoniidae (phacopida), da formação Ponta Grossa (devoniano), bacia do Paraná, Brasil [PDF]

open access: yesGeologia USP. Série Científica, 2008
Trilobites Calmoniidae (Delo, 1935) constituem o grupo de Phacopida mais abundante e diversificado do registro fóssil da Formação Ponta Grossa, Devoniano, Sub-bacia Apucarana. Embora conhecidos desde o início do século passado, o estudo dos trilobites da
Sabrina Pereira Soares   +2 more
doaj   +2 more sources

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

(2833) Proposal to conserve the name Phalacroma (Dinophysales: Dinophyceae)

open access: yes, 2021
TAXON, Volume 70, Issue 5, Page 1127-1128, October 2021.
Fernando Gómez
wiley   +1 more source

Shifting spaces: Which disparity or dissimilarity measurement best summarize occupancy in multidimensional spaces?

open access: yesEcology and Evolution, Volume 10, Issue 14, Page 7261-7275, July 2020., 2020
Different measurements of multidimensional space occupancy can give different results and are affected by the multidimensional space properties and biological question. This paper provides a guideline of what different measurements are capturing and in which context they can be useful for answering biological questions.
Thomas Guillerme   +3 more
wiley   +1 more source

Sequence of post-moult exoskeleton hardening preserved in a trilobite mass moult assemblage from the Lower Ordovician Fezouata Konservat-Lagerstätte, Morocco [PDF]

open access: yesActa Palaeontologica Polonica, 2019
Euarthropods have a tough exoskeleton that provides crucial protection from predation and parasitism. However, this is restrictive to growth and must be periodically moulted.
Harriet B. Drage   +3 more
doaj   +1 more source

Larvae and relationships of the Calymenina (Trilobita)

open access: yesJournal of Paleontology, 1990
Up to four discrete protaspid larval stages are described for calymenid trilobites of Ordovician to Devonian age. The earliest growth stages are nonadult-like planktonic protaspides; later protaspides are adult-like and benthonic. In contrast, the related homalonotid trilobites apparently lack planktonic protaspides, but have up to two large benthonic ...
Chatterton, B   +3 more
openaire   +2 more sources

Home - About - Disclaimer - Privacy