Results 61 to 70 of about 812 (153)
Ten simple rules to follow when cleaning occurrence data in palaeobiology
Palaeontology, Volume 68, Issue 5, September/October 2025.Abstract Large datasets of fossil occurrences, often downloaded from online community‐maintained databases, are a vital resource for understanding broad‐scale evolutionary patterns, such as how biodiversity has changed through time and space. Such datasets, however, are not infallible and must be ‘cleaned’ of inaccurate, incomplete, or duplicate data ...
Lewis A. Jones +9 more
wiley +1 more source
ZoodiversityThe article presents diagnoses and information on the type series of two trilobite species of the genus Papillicalymene Shirley, 1936: P. dnistroviana Konstantynenko, 2006 and P. sokoliana Konstantynenko, 2006 from the Ludlow (Upper Silurian) of Podillia
V. Dernov
doaj +1 more source
Geologica Acta, 2005 A review of the supposed moulting positions of the Bohemian Ordovician dalmanitoid and acastoid trilobites is presented. Five main moulting positions are described, but some combinations of these are also widespread.
P. Budil, J. Bruthansová
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Palaeontology, Volume 68, Issue 5, September/October 2025.Abstract Understanding the evolution and phylogenetic distribution of morphologic traits is fundamental to macroevolutionary research. Despite decades of major advances and key insights from molecular systematics, organismal anatomical features remain a key source of biological data for both inferring phylogenies and investigating patterns of trait ...
David F. Wright, Melanie J. Hopkins
wiley +1 more source
Review of the Cambrian Stratigraphy of the Argentine Precordillera
Geologica Acta, 2003 The Cambrian rocks of the Argentine Precordillera are analyzed and updated providing a new stratigraphic interpretation. The lithostratigraphic assemblages provide evidence that the Precordilleran Cambrian Basin was a rimmed platform.
O. Bordonaro
doaj +1 more source
Hábitos de Vida da Associação “Schuchertella”agassizi – Pthychopteria eschwegei, Formação Maecuru,Devoniano, Bacia do Amazonas, Brasil. [PDF]
Anuário do Instituto de Geociências, 2007 The fossils studied came from outcrops of the Maecuru and Curuá rivers, State of Pará, belonging to the upper strata of theMaecuru Formation, Eifelian age.
Luiza Corral Martins de Oliveira Ponciano +1 more
doaj
Convergent evolution of ventral adaptations for enrolment in trilobites and extant euarthropods. [PDF]
Proc Biol Sci, 2023 Losso SR +3 more
europepmc +1 more source
Trilobite compound eyes with crystalline cones and rhabdoms show mandibulate affinities
Nature Communications, 2019 Little is known about the internal anatomy of early eyes. Here, Scholtz and colleagues show the internal eye structures from fossils of two genera of trilobites, which support an ancestral apposition eye with crystalline cones in Trilobita and a close ...
Gerhard Scholtz +2 more
doaj +1 more source