Results 31 to 40 of about 2,442 (222)

Global warming generates predictable extinctions of warm‐ and cold‐water marine benthic invertebrates via thermal habitat loss

Global Change Biology, Volume 28, Issue 19, Page 5793-5807, October 2022., 2022
We simulated the latitudinal gradient of warming‐driven extinctions as caused solely by Earth’s spherical geometry and temperature. Simulations are consistent with the empirical extinction gradients of fossil marine invertebrates over seven global warming events, with extinction maxima in the tropics and at the poles.
Carl J. Reddin, Martin Aberhan, Nussaïbah B. Raja, Ádám T. Kocsis   +3 more
wiley   +1 more source

The chromosome‐scale assembly of the Canary Islands endemic spider Dysdera silvatica (Arachnida, Araneae) sheds light on the origin and genome structure of chemoreceptor gene families in chelicerates

Molecular Ecology Resources, Volume 22, Issue 1, Page 375-390, January 2022., 2022
Abstract Here, we present the chromosome‐level genome assembly of Dysdera silvatica Schmidt, 1981, a nocturnal ground‐dwelling spider endemic from the Canary Islands. The genus Dysdera has undergone a remarkable diversification in this archipelago mostly associated with shifts in the level of trophic specialization, becoming an excellent model to study
Paula Escuer, Vadim A. Pisarenco, Angel A. Fernández‐Ruiz, Joel Vizueta, Jose F. Sánchez‐Herrero, Miquel A. Arnedo, Alejandro Sánchez‐Gracia, Julio Rozas   +7 more
wiley   +1 more source

Validating marine Devonian biogeography: a study in bioregionalization

Palaeontology, Volume 65, Issue 1, January/February 2022., 2022
Abstract The Devonian record presents an opportunity to test and validate an existing marine bioregionalization. This study is the first to use comparative biogeography and phylogenetic data to test Devonian bioregionalization. Proposed in the 1960s, the Old World, Eastern Americas and Malvinokaffric realms have been the functional standard for marine ...
Elizabeth M. Dowding, Malte C. Ebach, Evgeny V. Mavrodiev, George Sevastopulo   +3 more
wiley   +1 more source

The first Silurian trilobite with three‐dimensionally preserved soft parts reveals novel appendage morphology

Papers in Palaeontology, Volume 7, Issue 4, Page 2245-2253, November 2021., 2021
Abstract The first Silurian trilobite known with soft parts preserved, a Dalmanites species, is described from the Herefordshire Lagerstätte. Biramous appendages and much of the alimentary system are evident. High‐fidelity three‐dimensional preservation reveals a novel arrangement of the exopod, in which successive filaments are connected by a presumed
Derek J. Siveter, Richard A. Fortey, Derek E. G. Briggs, David J. Siveter, Mark D. Sutton, Xi‐Guang Zhang   +5 more
wiley   +1 more source

Screwed up: Spirality of segments and other iterated structures suggest an underlying principle of seriality in bilaterians

Journal of Morphology, Volume 282, Issue 6, Page 833-846, June 2021., 2021
Spiral segmentation or helicomery was first described in annelid and arthropod body segments. However, corresponding patterns occur in arthropod appendages and other bilaterians with serially arranged body parts, such as tapeworms, nematodes, vertebrates, and probably chitons.
Gerhard Scholtz
wiley   +1 more source

The only known cyclopygid–‘atheloptic’ trilobite fauna from North America: the upper Ordovician fauna of the Pyle Mountain Argillite and its palaeoenvironmental significance [PDF]

, 2012
The trilobite fauna of the upper Ordovician (middle Katian) Pyle Mountain Argillite comprises a mixture of abundant mesopelagic cyclopygids and other pelagic taxa and a benthic fauna dominated by trilobites lacking eyes.
Adrain, ALAN W. OWEN, Angelin, Apollonov, Barrande, Bartholomew, Bergström, Beyrich, Boucot, Bruton, Brøgger, Budil, Cocks, Cocks, Cooper, Dalman, DAVID L. BRUTON, Dean, Dean, Dean, Fortey, Fortey, Fortey, Fortey, Fortey, Fortey, Gürich, Hammann, Hammann, Hammann, Hansen, Hawle, Horný, Hörbinger, Ingham, Ingham, Ingham, Jaekel, Jell, Ji, Kaesler, Kielan, Kielan, Kobaysahi, Kolobova, Kozák, Krueger, Kutorga, Lane, Lespérance, Lespérance, Linnarsson, Lu, Lu, M'Coy, Marek, Marek, McCormick, Morris, Nicholson, Nicholson, Nielsen, Nielsen, Owen, Owen, Owen, Owen, Owen, Owen, Parkes, Pek, Pek, Prantl, Price, Přibyl, Raymond, Reed, Reed, Reed, Reed, Repina, Rong, Ross, Roy, Salter, Schrank, Shaw, Shaw, Sheehan, Shergold, Shergold, Thomas, Volborth, Warburg, Weir, Whittard, Whittard, Whittington, Whittington, Whittington, Whittington, Whittington, Whittington, Whittington, Zhou, Zhou, Zhou, Zhou, Zhou, Zhou, Zhou, Zhou, Šnajdr   +112 more
core   +1 more source

Ontogeny of the trilobite Elrathia kingii (Meek) and comparison of growth rates between Elrathia kingii and Aulacopleura koninckii (Barrande)

Papers in Palaeontology, Volume 7, Issue 2, Page 985-1002, May 2021., 2021
Abstract Trilobites offer almost unparalleled insight into the growth and development of fossil ecdysozoans. Here I use newly collected material of Elrathia kingii (Meek) to estimate growth rates and describe shape change over the ontogeny of E. kingii.
Melanie J. Hopkins, Javier Álvaro
wiley   +1 more source

First record of the Ordovician fauna in Mila-Kuh, eastern Alborz, northern Iran [PDF]

Estonian Journal of Earth Sciences, 2015
Restudy of the Cambrian–Ordovician boundary beds, traditionally assigned to the Mila Formation Member 5 in Mila-Kuh, northern Iran, for the first time provides convincing evidence of the Early Ordovician (Tremadocian) age of the uppermost part of the ...
Mohammad-Reza Kebria-ee Zadeh, Mansoureh Ghobadi Pour, Leonid E. Popov, Christian Baars, Hadi Jahangir   +4 more
doaj   +1 more source

New agnostina (Trilobita) from the Llanvirn (Ordovician) of Spain

Estudios Geologicos, 1985
Se estudian los trilobites agnóstidos procedentes de nueve localidades, siete de ellas nuevas para estas faunas, situadas en las pizarras del Llanvirn inferior de la parte meridional de la Zona Centroibérica (Montes de Toledo, Villuercas y región de ...
I. Rábano, H. Pek, J. Vaněk
doaj   +1 more source

Die Gattung Erratencrinurus Krueger, 1971 (Trilobita; Ordovizium) aus baltoskandischen Geschieben [PDF]

Fossil Record, 2004
Aus der mittel- bis oberordovizischen Trilobitenfamilie Encrinuridae, die in Baltoskandia durch die Untergattungen Erratencrinurus und Celtencrinurus repräsentiert wird, werden achtzehn Arten beschrieben, darunter die vier neuen Arten Erratencrinurus (E.)
H.-H. Krueger
doaj   +3 more sources