Results 81 to 90 of about 12,118 (234)
An electron backscatter diffraction study of geesops: a broader view of trilobite vision? [PDF]
, 2008 The calcite eyes of trilobites have been studied for over 100 years using methods including light microscopy (e.g. Clarke 1889; Campbell 1975; Towe 1973; Clarkson 1979 and Bruton and Haas 2003) and more recently cathodoluminescence (CL) imaging coupled ...
Lee, M.R., Owen, A.W., Torney, C.
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The contribution of metabolic theory to ecology
Ecological Monographs, Volume 95, Issue 3, August 2025.Abstract The metabolic theory of ecology (MTE) has been an important strand in ecology for almost a quarter of a century, renewing interest in the importance of body size and the role of energy. The core of the MTE is a hydrodynamic model of the vertebrate cardiovascular system that predicts allometric scaling of metabolic rate with exponents in the ...
Andrew Clarke
wiley +1 more source
The modular organization of the trilobite head in Ceraurus pleurexanthemus
Palaeontology, Volume 68, Issue 4, July/August 2025.Abstract The trilobite head is a complex structure composed of multiple fused segments which served several functions. Modelling the head as being constituted of modules, or subunits that vary semi‐independently from each other, can reveal underlying patterns of organization. Hypotheses of modular organization based on comparative developmental biology
Ernesto E. Vargas‐Parra +1 more
wiley +1 more source
Journal of Fish Biology, Volume 106, Issue 6, Page 1876-1888, June 2025.Abstract The tidal freshwater zone is an aquatic transition zone that links a river to its estuary and provides an important habitat used in the life cycle of resident and migratory fishes. Yet, information on the trophic structure of fishes in this habitat is scarce. To address this gap, we characterize the trophic structure of a fish community in the
Emma E. Bowser +3 more
wiley +1 more source
Systematics of the Early Ordovician (late Tremadocian; Stairsian) trilobiteGonioteloidesKobayashi, with species from the Great Basin, western USA [PDF]
, 2021 Jonathan M. Adrain, Talia S. Karim
openalex +1 more source
Papers in Palaeontology, Volume 11, Issue 2, March/April 2025.Abstract A new exceptionally preserved euarthropod, Keurbos susanae gen. et sp. nov. from the Upper Ordovician Soom Shale Konservat‐Lagerstätte of South Africa, is described herein. Two specimens exhibit an unusual preservation style such that the cuticular exoskeleton is preserved in low relief but retains high‐fidelity details, whereas the internal ...
Sarah E. Gabbott +3 more
wiley +1 more source
Geophysical Research Letters, Volume 52, Issue 2, 28 January 2025.Abstract The Paleozoic paleogeographic and tectonic evolution of the North China Block (NCB) are poorly constrained due to the polarity ambiguity of its early Paleozoic paleopoles. Here we present magnetostratigraphic results of two upper Cambrian limestone‐dominated marine successions in the NCB that span the Steptoean positive carbon isotope ...
Wenjun Jiao +7 more
wiley +1 more source
Rivista Italiana di Paleontologia e Stratigrafia, 2006 The conterminant base of the Furongian Series and Paibian Stage (Cambrian), as ratified in 2003, is in dark carbonate slope deposits of the Paibi section, Hunan, China, at the FAD of the agnostid trilobite Glyptagnostus reticulatus.
QI YU-PING +2 more
doaj +1 more source
Linguloidean brachiopods from the Lower Ordovician (Tremadocian) of northwestern Argentina [PDF]
, 2015 The new obolid Torobolus subplanus gen. et sp. nov., from the lower Temadocian Devendeus Formation, the new species Libecoviella tilcarensis and Leptembolon argentinum, and Ectenoglossa sp.
Benedetto, Juan Luis Arnaldo +1 more
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