South American Ordovician phyllocarids (Crustacea, Malacostraca)
نویسندگان
چکیده
منابع مشابه
Recent Advances and Conflicts in Concepts of Anomuran Phylogeny (Crustacea: Malacostraca)
> Abstract In the debate over phylogenetic relationships within the Decapoda that has raged for more than a century, the Anomura has been the source of many "conflicts", including disagreements over which taxa belong in this morphologically diverse infraorder, and even what name is appropriate (Anomura or Anomala). The Anomura currently includes 17 families, 222 genera, and about 2,469 species,...
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The crustacean order Stomatopoda comprises seven superfamilies of mantis shrimps, found in coastal waters of the tropics and subtropics. These marine carnivores bear notable raptorial appendages for smashing or spearing prey. We investigated the evolutionary relationships among stomatopods using phylogenetic analyses of three mitochondrial and two nuclear markers. Our analyses recovered the sup...
متن کاملSystematic and Evolutionary Insights Derived from mtDNA COI Barcode Diversity in the Decapoda (Crustacea: Malacostraca)
BACKGROUND Decapods are the most recognizable of all crustaceans and comprise a dominant group of benthic invertebrates of the continental shelf and slope, including many species of economic importance. Of the 17635 morphologically described Decapoda species, only 5.4% are represented by COI barcode region sequences. It therefore remains a challenge to compile regional databases that identify a...
متن کاملCell Death in the Epithelia of the Intestine and Hepatopancreas in Neocaridina heteropoda (Crustacea, Malacostraca)
The endodermal region of the digestive system in the freshwater shrimp Neocaridina heteropoda (Crustacea, Malacostraca) consists of a tube-shaped intestine and large hepatopancreas, which is formed by numerous blind-ended tubules. The precise structure and ultrastructure of these regions were presented in our previous studies, while here we focused on the cell death processes and their effect o...
متن کاملCleavage and gastrulation of the dendrobranchiate shrimp Penaeus monodon (Crustacea, Malacostraca, Decapoda).
The cleavage pattern of the black tiger shrimp Penaeus monodon was analyzed from the first division until gastrulation. Observations were based on microscopy combined with the use of fluorescent dyes, histological techniques, and computer based three-dimensional reconstructions. Early cleavage is holoblastic and follows a stereotypic pattern, which largely corresponds to what is known from othe...
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ژورنال
عنوان ژورنال: Bulletin of Geosciences
سال: 2009
ISSN: 1802-8225,1214-1119
DOI: 10.3140/bull.geosci.1126