Results 61 to 70 of about 2,938 (213)

The potential functions of mechanoreceptors found on trilobite larva of Limulus polyphemus (Linnaeus, 1758) [PDF]

Arthropods, 2022
In this study trilobite larvae and early juvenile stages of Limulus polyphemus (Linnaeus, 1758) are examined using light microscopy and scanning electron microscopy to examine the mechanoreceptors present on the cuticle.
John A. Fornshell
doaj  

Structure of trilobite communities along a delta-marine gradient (lower ordovician; northwestern Argentina)

, 2021
Throughout their long history, trilobites occupied various ecological niches, colonizing a wide variety of marine environments. However, the paleoecology of this group is mostly based on shelf-slope environments and less is known about their distribution
Serra, Fernanda, Vaucher, Romain, Waisfeld, Beatriz G., Waisfeld, Beatriz Graciela, Balseiro, Diego, Romain, Vaucher   +5 more
core   +1 more source

Putative Analogs of Pyrite Suns Forming in Proglacial Alaska Mudflats

Journal of Geophysical Research: Biogeosciences, Volume 131, Issue 5, May 2026.
Abstract Disc‐shaped pyrite suns of the Pennsylvanian age Anna Shale are thought to have formed where pressure restricted pyrite crystal growth to a flattened disc shape during diagenesis at the Anna Shale and the underlying Herrin coal boundary.
Heather L. Fair, Trinity L. Hamilton, Jeff R. Havig   +2 more
wiley   +1 more source

Atractocybeloides, eine kleinwüchsige Trilobitengattung aus baltoskandischen Geschieben und ihrem Anstehenden [PDF]

Fossil Record, 2002
Aus mittel- bis oberordovizischen Geschieben werden fünf Taxa der kleinwüchsigen Trilobitengattung Atractocybeloides vorgestellt, davon die beiden neuen Arten Atractocybeloides nebeni n. sp. und Atractocybeloides oepiki n. sp.
H.-H. Krueger
doaj   +3 more sources

Affinity in Concentric Circles (ACC): A Geometric Representation of Dendrogram and Interpretation

Journal of Biogeography, Volume 53, Issue 5, May 2026.
ABSTRACT Aim We introduce “Affinity in Concentric Circles” (ACC), a method that converts dendrograms to a geometric form using similarity scores to compare dendrograms and identify affinity change patterns. Location China for trilobites and global for nisusiid brachiopods.
Yeongju Oh, Jikhan Jung, Tae‐Yoon Park, Dong‐Chan Lee   +3 more
wiley   +1 more source

Post-Cambrian Trilobite Diversity and Evolutionary Faunas

, 1998
A cluster analysis of the stratigraphic distribution of all Ordovician trilobite families, based on a comprehensive taxonomic database, identified two major faunas with disjunct temporal diversity trends.
Richard A. Fortey, Stephen R. Westrop, Jonathan M. Adrain   +2 more
core   +1 more source

Type Specimens of the Species of the Genus Papillicalymene (Arthropoda, Trilobita) from Ukraine Described by Leonid Konstantynenko

Zoodiversity
The 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

Modelling Palaeodistributions in Marine Environments: A Review

Journal of Biogeography, Volume 53, Issue 5, May 2026.
ABSTRACT Aim This scoping review (ScR) synthesises the current literature on the application of Species Distribution Models (SDM) to past marine environments. We assess how these models have been used to reconstruct past environmental suitability, track biogeographical shifts and investigate long‐term ecological dynamics, while identifying key ...
Sarah Mathilde Salomé Beauvais, Emna Ben Lamine, Konstantina Agiadi, Maria Bas, Grégory Beaugrand, Tatiana Theodoropoulou, Virginie Raybaud   +6 more
wiley   +1 more source

Palaeobiology of Silurian trilobites from North Greenland [PDF]

, 2010
The Telychian (Llandovery, Silurian) reefs of North Greenland yield extensive collections of diverse and remarkably well preserved trilobites. The collections comprise 36 named trilobite species (32 new), and 30 under open nomenclature.
Hughes, Helen Elizabeth
core  

Trilobite occurrence dataset

, 2019
Trilobite presence-absence dataset of samples from the Cambro-Ordovician of the Argentine Cordillera Oriental with environmental assignation (shallow subtidal, deep subtidal, offshore)
Serra, Fernanda, Fernanda Serra (6467366), Beatriz Waisfeld (6467378), Balseiro, Diego, Diego Balseiro (3245076), Waisfeld, Beatriz   +5 more
core   +1 more source