Results 1 to 10 of about 17 (15)

Developmental traits and life strategy of redlichiid trilobites. [PDF]

Biol Rev Camb Philos Soc, 2023
ABSTRACT The developmental mode of four redlichiid trilobites is summarized, based upon exceptionally well‐preserved, articulated specimens from Cambrian Series 2 (stages 3 and 4) strata in southwestern China and South Australia. These relatively complete developmental sequences indicate a balanced rate in segment increase and addition to the thorax ...
Dai T, Zhang X, Peng S.
europepmc   +2 more sources

Miaolingian (Cambrian) trilobite biostratigraphy and carbon isotope chemostratigraphy in the Tingskullen drill core, Öland, Sweden [PDF]

Estonian Journal of Earth Sciences, 2021
The Cambrian succession of the Tingskullen drill core from northern Öland comprises Cambrian Series 2 and Miaolingian (Wuliuan Stage) siliciclastic strata.
Per Ahlberg, Frans Lundberg, Mikael Calner, Oliver Lehnert, Peter Dahlqvist, Michael M. Joachimski   +5 more
doaj   +1 more source

Contrasting patterns of disparity suggest differing constraints on the evolution of trilobite cephalic structures during the Cambrian ‘explosion’

Palaeontology, Volume 66, Issue 2, March/April 2023., 2023
Abstract Trilobites are an abundant group of Palaeozoic marine euarthropods that appear abruptly in the fossil record c. 521 million years ago. Quantifying the development of morphological variation (or ‘disparity’) through time in fossil groups like trilobites is critical in understanding evolutionary radiations such as the Cambrian ‘explosion’. Here,
James D. Holmes, Javier Álvaro
wiley   +1 more source

Biostratigraphy and taxonomy of Drumian (middle Cambrian) agnostid trilobites of the Manuels River Formation, Avalonian Newfoundland, Canada

Papers in Palaeontology, Volume 7, Issue 3, Page 1657-1698, August 2021., 2021
Abstract New, accurately located and well‐preserved agnostid trilobite material has been collected from the type locality of the Drumian (middle Cambrian, Miaolingian) Manuels River Formation, Newfoundland, Canada. The well‐exposed grey to black shales containing the fauna were deposited on the former microcontinent Avalonia.
Anne Hildenbrand, Gregor Austermann, Christina Ifrim, Peter Bengtson, Javier Álvaro   +4 more
wiley   +1 more source

Phylogenetic response of naraoiid arthropods to early–middle Cambrian environmental change

Palaeontology, Volume 64, Issue 1, Page 161-177, January 2021., 2021
Abstract The Cambrian Period, primarily known for animal life diversifying, experienced global extinctions. Pulses of extinction in Cambrian Series 2 are exemplified by the disappearance of archaeocyath sponges and olenelline and redlichiid trilobites.
Andrew D. Bond, Gregory D. Edgecombe, Xi‐Guang Zhang   +2 more
wiley   +1 more source

Reassessing a cryptic history of early trilobite evolution. [PDF]

Commun Biol, 2022
Holmes JD, Budd GE.
europepmc   +1 more source

Humble origins for a successful strategy: complete enrolment in early Cambrian olenellid trilobites. [PDF]

Biol Lett, 2013
Ortega-Hernández J, Esteve J, Butterfield NJ.   +2 more
europepmc   +1 more source

Distinct causes underlie double-peaked trilobite morphological disparity in cephalic shape. [PDF]

Commun Biol
Drage HB, Pates S.
europepmc   +1 more source

Deep water vetulicolians from the lower Cambrian of China. [PDF]

PeerJ
Ma S, Kimmig J, Schiffbauer JD, Li R, Peng S, Yang X.   +5 more
europepmc   +1 more source

Evidence for cryptic molting behavior in the trilobite Toxochasmops vormsiensis from the Upper Ordovician Katian Kõrgessaare Formation, Estonia. [PDF]

Naturwissenschaften
Bicknell RDC, Vargas-Parra EE, Landman NH, Pärnaste H.   +3 more
europepmc   +1 more source