Results 41 to 50 of about 1,869 (195)

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

Archegonus (Latibole) G. & R. Hahn 1969 (Trilobita) aus der crenestria-Zone (Unter-Karbon III) von Lauenthal (Ober-Harz) [PDF]

open access: yes, 1971
Aus der crenistria-Zone (Subzone des Goniatites crenistria crenistria = cu III alpha3) von Lautenthal (Ober-Harz) werden zwei Arten von ArchegonusJ(Latibole) G.& R.HAHN, 1969 beschrieben und abgebildet: Archegonus (Latibole) laevicauda laevicauda (SARRES,
Brauckmann, Carsten
core   +2 more sources

(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

Late Middle Cambrian fossils from Beaconsfield, Tasmania [PDF]

open access: yes, 1980
The only known Cambrian fauna of the Beaconsfield Trough has a late Middle Cambrian (PtychQgnostus nathorsti or Lejopyge laevigata Zone) age; it occurs 4.5 km south-west of Beaconsfield, northern Tasmania.
Jago, JB
core   +3 more sources

Late Cambrian brachiopods from the Denison Range, southwestern Tasmania [PDF]

open access: yes, 1989
Eight unnamed species of brachiopods and one indetenninate hyolithid species are described and figured from three stratigraphic intervals within the early Late Cambrian Singing Creek Formation, Denison Range, southwestern ...
Jago, JB
core   +3 more sources

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

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

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

A systematic revision of the family Harpetidae (Trilobita) [PDF]

open access: yesRecords of the Western Australian Museum, 2002
(Uploaded by Plazi from the Biodiversity Heritage Library) No abstract provided.
Ebach, Malte C., Mcnamara, Kenneth J
openaire   +1 more source

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