Results 141 to 150 of about 522 (169)

Notostraca and Allies (Calmanostraca)

2022
Abstract The living Notostraca, ranging up to 10 cm in length, are a small group (approximately 11 species), but the larger assemblage of fossils (including Kazacharthra and the problematic Castrocollida) provides added depth and interest, thus facilitating the creation of a cohort Calmanostraca within infraclass Phyllopoda.
Frederick R. Schram, Stefan Koenemann
openaire   +1 more source

New fossil arthropods (Notostraca and Insecta: Syntonopterida) in the Continental Middle Permian of Provence (Bas-Argens Basin, France)

Comptes Rendus - Palevol, 2009
9 pagesApart frequent and relatively common ichnites, only a few body fossils (Ostracoda) have been mentioned in the Red Continental Permian formations of Provence till these last years.
Romain Garrouste, André Nel, Georges Gand   +2 more
exaly   +2 more sources

Branchiopoda (Anostraca, Notostraca, Laevicaudata, Spinicaudata, Cyclestherida)

2009
exaly   +2 more sources

Heart ultrastructure in Lepidurus arcticus pallas (Crustacea, Branchiopoda, Notostraca)

Cell and Tissue Research, 1980
The heart of Lepidurus arcticus consists of an epicardium and a single layer of strongly polarized myocardial cells, 10-50 micron thick, with the myofibrillar part facing the epicardium. The Z-bands are diffuse and some Z-material forms attachment plaques. Relaxed sarcomeres show a hexagonal arrangement of thick filaments and 6 thin filaments in orbit,
A, Tjønneland, B, Midttun, S, Okland, H O, Liebich   +3 more
openaire   +2 more sources

Groß-Branchiopoden (Crustacea: Anostraca und Notostraca)

2023
In Carinthia, currently four species of large branchiopods are documented, the two fairy shrimps Branchipus schaefferi and Eubranchipus grubii, and the two tadpole shrimps Lepidurus apus and Triops cancriformis. These are isolated, small-scale occurrences, which is why all of the above species are considered "critically endangered, CR" for this ...
Eder, Erich, Smole-Wiener, Karina, Schernhammer, Tobias   +2 more
openaire   +1 more source

The status of Anostraca, Notostraca and Conchostraca (Crustacea: Branchiopoda) in Yugoslavia

Hydrobiologia, 1997
The investigations of Anostraca, Notostraca and Conchostraca in Yugoslavia began after a great delay compared with other European countries. Intensive systematic investigations date back only to the 1970s.To date, 19 species have been recorded. All species, with the exception of Artemia salina, are faunal elements of the Pannonian region.
Brigita Petrov, Ivan Petrov
openaire   +1 more source

The reproduction and cytology of the Notostraca (Crustacea, Phyllopoda).

Proceedings of the Zoological Society of London, 1955
SummaryBoth bisexual and hermaphrodite reproduction occurs in the Notostraca. The form of the gonads is described and the cytological cycle of ovaries and testes reported briefly.The most successful chromosome counts were made on the early spermatid nuclei, seen abundantly in smears of nearly mature tests.
openaire   +1 more source

The large branchiopods (Anostraca, Notostraca and Spinicaudata) of Numidia (Algeria)

Hydrobiologia, 2002
Between 1995 and 1999, we surveyed the large branchiopods (Crustacea, Branchiopoda) of Numidia, the coastal plain of northeastern Algeria. Samples from ca 100 sites yielded two species of Anostraca (Chirocephalus diaphanus, new to Numidia, and Tanymastix stagnalis), one notostracan (Lepidurus apus lubbocki) and one spinicaudatan (Cyzicus tetracerus ...
Boudjéma Samraoui, H.J. Dumont
openaire   +1 more source

Ultrastructural observations on the oogenesis of Triops cancriformis (Crustacea, Notostraca).

Cell and tissue research, 1979
Each ovarian follicle of Triops cancriformis is four-celled; these cells (one oocyte and three nurse cells) are interconnected by cytoplasmic bridges. In the course of differentiation, the nurse cells are clearly recognizable; they increase in size more than the oocyte and their nuclei contain many nucleoli.
M, Trentini, F S, Scanabissi
openaire   +4 more sources

Studies on the functional morphology and biology of the Notostraca (Crustacea: Branchiopoda)

Philosophical Transactions of the Royal Society of London. B, Biological Sciences, 1988
Abstract (In this abstract, numbers in parentheses refer to key figures in the text which facilitate understanding.) Selected aspects of notostracan morphology are considered from a functional standpoint and related to habits whenever possible.
openaire   +1 more source