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The Late Devonian Palaeopalaemonidae and the earliest decapod crustaceans

TLDR
A detailed study of the anatomy leads to the conclusion that P. newberryi is the earliest recognized decapod eucarid crustacean with characters of both the glypheoidean palinurans and astacideans.
Abstract
A reexamination of all available palaeopalaemonid specimens, of the genus Palaeopa- laemon, and material of Bellocaris newfoundlandensis Fong, 1972, is presented. The four described species of Palaeopalaemon are synonymized as one, P. newberryi Whitfield, 1880. A detailed study of the anatomy leads to the conclusion that P. newberryi is the earliest recognized decapod eucarid crustacean with characters of both the glypheoidean palinurans and astacideans. Bellocaris is not a paleopalaemonid but a pygocephalomorph mysidacean peracarid, closely related to Pygocephalus.

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The Great Ordovician Biodiversification Event

TL;DR: The Global Ordovician Biodiversification Event (GOBE) was undoubtedly one of the most significant evolutionary events in the history of the marine biosphere as discussed by the authors, however, it was not paralleled by an increase in the abundance of bioturbation structures.
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Ichnology: Organism-Substrate Interactions in Space and Time

TL;DR: In this article, a detailed analysis of the ichnology of a range of depositional environments is presented using examples from the Precambrian to the recent, and the use of trace fossils in facies analysis and sequence stratigraphy is discussed.
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Molecular timetrees reveal a Cambrian colonization of land and a new scenario for ecdysozoan evolution.

TL;DR: A timescale of ecdysozoan evolution is presented based on multiple molecular data sets, the most complete set of fossil calibrations to date, and a thorough series of validation analyses, which converge on an Ediacaran origin of all major ecdy sozoan lineages.
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Model-based multi-locus estimation of decapod phylogeny and divergence times.

TL;DR: Divergence time estimation using fossils as lower and upper limits performed well with as few as one upper limit and a single deep fossil lower limit calibration, while node time estimation under both approaches is severely affected by the number and phylogenetic distribution of the fossil calibrations chosen.
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Phylogeny of Decapoda using two nuclear protein-coding genes: origin and evolution of the Reptantia.

TL;DR: The first application of two nuclear protein-coding genes, phosphoenolpyruvate carboxykinase and sodium-potassium ATPase alpha-subunit, to reconstruct the phylogeny of major infraorders within Decapoda is presented and it is proposed that nuclear Protein-Coding genes should constitute core markers for future phylogenetic studies of decapods, especially for higher systematics.
References
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Journal Article

The evolution of the Eucarida, (Crustacea, Eumalacostraca), in relation to the fossil record

TL;DR: In this paper, the habits and characteristics to be expected of Paleozoic fossils representing the hypothetical stems of Eucarid groups are outlined, and the present view of Decapod phylogeny founded on evidence from Recent forms are outlined.
Book

The fossil decapod crustacea of New Zealand and the evolution of the order decapoda

TL;DR: This chapter discusses the evolution of the carapace and the internal skeleton of the decapod Crustacea, as well as the distribution and faunal relations of these animals in New Zealand.
Journal Article

Observations on the ammonoid succession of the North American Devonian

TL;DR: The sequence of Devonian ammonoid faunas in North America is reviewed in this article, and comparisons are made with the known European and North African successions of ammonoid life.
Journal ArticleDOI

Devonian-mississippian formations of southeast iowa

TL;DR: A study of the conodont assemblages from the Maple Mill, Grassy Creek, and Louisiana formations was conducted by as discussed by the authors, who found that these assemblage are more closely related to conodons from unquestionably Devonian rocks than to an assemblaging from rocks of undoubted Mississippian age.