Results 221 to 230 of about 9,857 (239)

Freshwater origin of Bathynellacea (Malacostraca)

Crustaceana, 2014
There are two opposing hypotheses on the origin of Bathynellacea, a marine and a freshwater one. According to the marine hypothesis, Bathynellacea invaded continental groundwater from the sea via the interstitial of marine beaches (“two-step model”), whereas according to the freshwater hypothesis the groundwater was reached from the sea via fresh ...
openaire   +2 more sources

Survey and Distribution of Crustacea Malacostraca in Poland

Crustaceana, 1993
AbstractThe paper presents a survey of Polish malacostracan fauna. In two tables the distribution of freshwater and Baltic species is presented according to the regionalization of the country used in "Catalogus Faunae Poloniae". Figures present some interesting distributions of freshwater malacostracan taxa.
Alicja Konopacka, Krzysztof Jaźdźewski
openaire   +2 more sources

General Characteristics of Malacostraca

2017
Malacostracans are among one of the most species-rich classes in nature. The crustaceans in this class differ widely in size—from a few millimetres to almost one metre in length. Because of their complex morphological and anatomical structure, they are often referred to as higher crustaceans.
openaire   +2 more sources

Crustacea Malacostraca. I

1908
(Uploaded by Plazi from the Biodiversity Heritage Library) No abstract provided.
openaire   +1 more source

On the classification of the Crustacea Malacostraca

1904
(Uploaded by Plazi from the Biodiversity Heritage Library) No abstract provided.
openaire   +1 more source

Paleozoogeography of Late Paleozoic and Triassic Malacostraca

Systematic Zoology, 1977
Schram, F. R. (Department of Zoology, Eastern Illinois University, Charleston, Illinois 61920) 1977. Paleozoogeography of Late Paleozoic and Triassic Malacostraca. Syst. Zool. 26:367-379.-Paleozoogeographic patterns of Late Paleozoic through Triassic marine and freshwater malacostracans, interpreted in light of Croizat's vicariance model of ...
openaire   +2 more sources

Stomatopods (Crustacea: Malacostraca) from the Miocene of California

Journal of Paleontology, 1998
The scarce fossil record of stomatopod crustaceans is extended with three new species and two new genera described from the Miocene of California.Squilla laingaenew species andAngelosquilla altamirensisnew genus and species show clear affinities to the Recent family Squillidae.Topangasquilla gravesinew genus and species can be accommodated within the ...
Hof, C.H.J., Schram, F.R.
openaire   +4 more sources

Ultrastructure of maxillary gland ofAntrobathynella stammeri (Syncarida, Malacostraca)

Journal of Morphology, 1996
The maxillary gland of the highly adapted stygobiont species, Antrobathynella stammeri (Bathynellacea, Syncarida), consists of an end sac, an excretory tubule, and a terminal duct. No valve was found. The excretory tubule forms a loop extending back into the fourth thoracic segment. The end sac is composed of five typical podocytes.
Beate Steenken, Horst Kurt Schminke
openaire   +3 more sources

Origin of Antarctic Isopoda (Crustacea, Malacostraca)

Marine Biology, 1992
An analysis of the horizontal and the vertical zonation of the Antarctic Isopoda, combined with knowledge of the geological history of Antarctica and isopod phylogeny, revealed that the isopod family Serolidae and subfamily Arcturinae are likely to have evolved from ancestors that inhabited a cold-temperate Gondwanian province.
openaire   +2 more sources

Evolution of Optical Design in the Malacostraca (Crustacea)

2002
How much can compound eye structure and optical design tell us about the phylogenetic relationships and evolution of the carriers of the compound eyes, in our case the crustaceans? To answer this question, it is necessary to distinguish between compound eye morphology and the cellular composition of the ommatidia on the one hand, and eye physiology and
openaire   +2 more sources