The biostratigraphic importance of conchostracans in the continental Triassic of the northern hemisphere

  title={The biostratigraphic importance of conchostracans in the continental Triassic of the northern hemisphere},
  author={Heinz W. Kozur and Robert E. Weems},
Abstract Conchostracans or clam shrimp (order Conchostraca Sars) are arthropods with a carapace consisting of two chitinous lateral valves. Triassic conchostracans range in size from 2 to 12.5 mm long and are common in deposits that formed in fresh water lakes, isolated ponds and brackish areas. Their dessication- and freeze-resistant eggs can be dispersed by wind over long distances. Therefore many conchostracan species are distributed throughout the entire northern hemisphere. In the Late… Expand
Late Pennsylvanian–Early Triassic conchostracan biostratigraphy: a preliminary approach
Abstract Conchostracans are one of the most common fossil animal groups of continental deposits from late Palaeozoic to modern times. Their habitats have ranged from perennial lakes of theExpand
Biostratigraphy and geometric morphometrics of conchostracans (Crustacea, Branchiopoda) from the Late Triassic fissure deposits of Cromhall Quarry, UK
The enigmatic fissure deposits of south-western England and southern Wales are famous for their unique assemblage of Late Triassic vertebrates, although their age is contentious. While recent studiesExpand
Late Permian conchostracans (Crustacea, Branchiopoda) from continental deposits in the Moscow Syneclise, Russia
Abstract. The Moscow Syneclise on the East European Platform is an important area for the study of the continental biota of late Permian to Early Triassic age in continuous sections. This studyExpand
Conchostracans in continental deposits of the Zechstein–Buntsandstein transition in central Germany: Taxonomy and biostratigraphic implications for the position of the Permian–Triassic boundary within the Zechstein Group
Abstract The end-Permian mass extinction marks the largest biotic crisis in the geologic record. The stratigraphic position of this boundary in continental deposits is still under discussion. In theExpand
Early Triassic Conchostracans (Crustacea: Branchiopoda) from the terrestrial Permian–Triassic boundary sections in the Moscow syncline
Abstract The Permian–Triassic boundary marks the greatest mass extinction in Earth's history. In order to understand the real causes of this severe extinction event, multidisciplinary investigationsExpand
Biostratigraphic significance and geometric morphometrics of Euestheria gutta (Crustacea: Branchiopoda: Spinicaudata): An index fossil of continental Permian–Triassic transitional beds
Handling Editor: Z.-Q. Chen The Permian–Triassic mass extinction was the largest biotic extinction event in the Phanerozoic and affected both marine and continental life. Marine Permian–TriassicExpand
Disaster microconchids from the uppermost Permian and Lower Triassic lacustrine strata of the Cis-Urals and the Tunguska and Kuznetsk basins (Russia)
Abstract We describe aggregative microconchid (Lophophorata) tubes from the uppermost Permian (upper Changhsingian) and Lower Triassic (Olenekian) lacustrine and fluvial strata of the Tunguska andExpand
Lilliput effect in freshwater ostracods during the Permian–Triassic extinction
Abstract The Lilliput effect following the Permian–Triassic mass extinction and its aftermath has been documented in a variety of marine animal groups, but it is less known in terrestrial andExpand
Abstract: Spinicaudatans are a diverse and geographically widespread group of small branchiopod crustaceans with an excellent fossil record. They inhabit ephemeral freshwater habitats with warmExpand
An enigmatic ‘conchostracan’ fauna in the eastern Dead Sea region of Jordan: First records of Rossolimnadiopsis Novozhilov from the Early Triassic Ma'in Formation
Abstract The Late Permian–Early Triassic sedimentary succession in the eastern Dead Sea Region of Jordan was surveyed for conchostracans (Crustacea: Branchiopoda). Whereas their occurrence in theExpand


Presence of the dinosaur Scelidosaurus indicates Jurassic age for the Kayenta Formation (Glen Canyon Group, northern Arizona)
The Glen Canyon Group (Moenave, Wingate, Kayenta and Navajo Formations) of northern Arizona represents an extensive outcrop of early Mesozoic age terrestrial sediments. The age of these formationsExpand
Conchostracans and insects from the Upper Triassic of the Biobío river ('Santa Juana Formation'), south-central Chile
Fossil arthropods from Upper Triassic outcrops along the Biobio river, south-central Chile, are reported in this paper. Two species of the order Coleoptera, Ademosyne sp., and IschichucasyneExpand
Late Triassic spinicaudatan crustaceans from Southwestern Poland
An assemblage of well-preserved spinicaudatan crustaceans ('conchostracans') is described from lacustrine late Carnian claystone at Krasiejow in southwestern Poland. Their shell microstructure isExpand
A Dicynodont-Theropod Association in the Latest Triassic of Poland
It is generally accepted that during the Triassic the composi− tion of tetrapod faunas underwent a series of fundamental transformations, mainly as a result of diversification of archosaurs andExpand
Notes on some Fossil non-Marine Mollusca and a Bivalved Crustacean (Estheriella) from Nyasaland
  • R. Newton
  • Geology
  • Quarterly Journal of the Geological Society of London
  • 1910
The specimens described in these notes have been collected by Messrs. A. R. Andrew & T. E. G. Bailey in the north-western area of Nyasaland, during a mineral survey carried out between the years 1906Expand
Carboniferous and Permian Leaioidea (Branchiopoda: Conchostraca) from Australia: Taxonomic Revision and Biostratigraphic Implications
A taxonomic revision of Australian leaioid faunas has reduced, by synonymy, the known Early Carboniferous taxa to three species viz., Hemicycloleaia andersonae (Tasch, 1979), H. grantrangicus (Tasch,Expand
Chapter 8 - Paleontology and paleoecology of the Newark Supergroup (early Mesozoic, eastern North America)
Abstract The diverse depositional environments and rich fossil assemblages of the early Mesozoic Newark Supergroup of eastern North America can be subdivided into six broad environmental categoriesExpand
Tetrapod biostratigraphy and biochronology of the Triassic-Jurassic transition on the southern Colorado Plateau, USA
Abstract Nonmarine fluvial, eolian and lacustrine strata of the Chinle and Glen Canyon groups on the southern Colorado Plateau preserve tetrapod body fossils and footprints that are one of theExpand
Invertebrate trace fossil assemblages from the Lower Hettangian of Sołtyków, Holy Cross Mountains, Poland
Invertebrate trace fossil assemblages from the Hettangian (Early Jurassic) alluvial plain deposits of So∏tyków (Holy Cross Mts, Poland) represent three terrestrial ichnofacies: the Mermia ichnofaciesExpand
Conchostracans from the Lower Jurassic Whitmore Point Member of the Moenave Formation at Johnson Farm, southwestern Utah, are preserved as three-dimensional, carbonate-replaced shells. The presenceExpand