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Purujosa trilobite assemblage and the evolution of trilobite enrollment
Geology, 2011Localities bearing abundant enrolled Cambrian trilobites are extremely rare, but here we report a new and exceptional such assemblage with a high diversity of enrolled specimens from the middle Cambrian of Spain. This novel find demonstrates that encapsulated enrollment was a behavioral response available to many of the early benthic trilobite morpho ...
Jorge Esteve +2 more
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A Devonian Trilobite with an Eyeshade
Science, 2003Trilobites include the oldest species with preserved eyes for which detailed optical mechanisms have been suggested. They appear in the Cambrian, and in comparison to other species present then, trilobites already had unusually sophisticated eyes with lenses made out of the mineral calcite ( [1 ...
Richard, Fortey, Brian, Chatterton
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Respiration in trilobites: A reevaluation
GFF, 2008Abstract It has often been taken for granted that the outer branch of trilobite limbs had a gill function. Since there are no thorough analyses of the case, we decided to make an attempt. Morphological characteristics of arthropod gills are defined. There is a need for a large area/volume ratio with a cuticle thin enough to perform gaseous exchange and
Yutaro Suzuki, Jan Bergstrom
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Development of eodiscinid trilobites
Biological ReviewsABSTRACTA comprehensive review of a full developmental sequence of eodiscinid trilobites reported in recent decades from Cambrian Series 2 and 3 strata is presented. These mostly articulated specimens exhibit detailed morphologies with preservation of even delicate structures at different growth stages, such as the bacculae, axial pores, spine pores ...
Tao Dai, Xingliang Zhang
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Ploughshares, 2015
Acclaimed publisher and editor Neil Astley, founder of Bloodaxe Books, guest-edits this special transatlantic all-poetry issue, featuring poets from North America, Great Britain, and Ireland. The issue contains a stirring diversity of work, with writers who have roots everywhere from Guyana to Pakistan to Zambia, and also features poetry in Welsh ...
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Acclaimed publisher and editor Neil Astley, founder of Bloodaxe Books, guest-edits this special transatlantic all-poetry issue, featuring poets from North America, Great Britain, and Ireland. The issue contains a stirring diversity of work, with writers who have roots everywhere from Guyana to Pakistan to Zambia, and also features poetry in Welsh ...
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Biological Reviews, 1957
Summary1. Terminology is explained, and the importance emphasized of work, mostly published during the last 10 years, on extraordinarily well‐preserved exoskeletons replaced by quartz. The need for a reconsideration of theories derived from ontogenetic studies is evident.2. The protaspis is of sub‐hemispherical to spherical form, i mm.
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Summary1. Terminology is explained, and the importance emphasized of work, mostly published during the last 10 years, on extraordinarily well‐preserved exoskeletons replaced by quartz. The need for a reconsideration of theories derived from ontogenetic studies is evident.2. The protaspis is of sub‐hemispherical to spherical form, i mm.
openaire +1 more source