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Bibliography: p. 69-73.
|Statement||Colin G. Ogden.|
|Series||Bulletin of the British Museum (Natural History). Zoology series -- v. 44, no. 1, Bulletin of the British Museum (Natural History) -- v. 44, no. 1|
|Contributions||British Museum (Natural History)|
|The Physical Object|
|Pagination||73 p. :|
|Number of Pages||73|
Download Observations on the systematics of the genus Difflugia in Britain (Rhizopoda, Protozoa)
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Observations on the systematics of the genus Difflugia in Britain (Rhizopoda, Protozoa) Vol Page 1 Cirolana cranchi Leach, (Crustacea: Isopoda:. Members of genus Difflugia have been classically defined by their shells that are always composed of mineral particles and diatoms embedded in sheet-like organic cement secreted by the amoebae.
Notably, D. urceolata is one of the most widely reported species of the genus Difflugia, probably due to its large size and distinctive shape.
To permit correct identification to species level, the description of a new taxon should comprise information not only on characters of the shell (if possible by light and scanning electron microscopy) but also on characters of the cell and biometrical by: Ogden CG () Observations on the systematics of the genus Difflugia in Britain (Rhizopoda, Protozoa).
Bull Br Mus nat Hist (Zool) –73 Google Scholar Ogden CG, Hedley RH () An atlas of freshwater testate by: 2. Insect Systematics and Evolution Weingartner, E., N. Wahlberg, & S. Nylin. Speciation in Pararge (Satyrinae: Nymphalidae) butterflies - North Africa is the source of ancestral populations of all Pararge species.
Systematic Entomology From inside the shell Blog of the International Society for Testate Amoeba Research (ISTAR) Menu. Difflugia oblonga. OGDEN C.G.,Observations on the systematics of the genus Difflugia in Britain.
– Bull. Mus. Nat. Hist. The present paper adds data on five species of the genus Difflugia from the much polluted waters of the Tiete River.
These observations extend species circum- scriptions, and bring new light to bear on the morphology, biometry, ecology and distribution of Difflugia. Ogden CG () Observations of the systematics of the genus Difflugia in Britain (Rhizopoda, Protozoa). Bull Br Mus Nat Hist (Zool) –73 Google Scholar Ogden CG, Ellison RL () The value of the organic cement matrix in the identification of the shells of fossil testate by: (lb): Comparative morphology of some pyriform species of Difflugia (Rhizopoda).
Arch. Protistenkd. (): Shell structure in some pyriform species of Difflugia (Rhizopoda). Arch. Protistenkd. (): Observations on the systematics of the genus Difflugia in Britain (Rhizopoda, Protozoa).
Bull. by: Gauthier-Lièvre & Thomas () in their survey of the African species have divided the genus Difflugia into ten artificial groups based on the morphology of the test: lobed, collared, compressed, urceolate, globose, ovoid-globose, elongate, acute angled, horned and pyriform.
The size of Difflugia spp. ranges from 15 µm up to more than µm. The species accounts provide additional characters for identification, along with observation tips, indicating the habitat and habits of the species. A distribution map and flight diagram are given, based on the large dataset that resulted from the extensive British hoverfly recording scheme, which has been led by the authors for many : Menno Reemer.
One of the more than species in this genus is the "slender riccia" (Riccia fluitans), which grows on damp soil or, less commonly, floating in ponds, and is sometimes used in aquariums.
The sporophyte of Riccia is the simplest amongst bryophytes. It consist of only a capsule, missing both foot and seta, and does not perform : Marchantiopsida.
Denis Summers-Smith first took up the study of the House Sparrow inthinking that the difficulties of travel in post-war Britain would best suit the study of a species always close at hand. The humble House Sparrow, common everywhere, was surprisingly poorly researched and his work soon provided interesting insights into this successful and adaptable little bird.
Start studying Chapter 18 BIOL Learn vocabulary, terms, and more with flashcards, games, and other study tools. How to cite this article: Witkowski, A. et al. Simonsenia aveniformis sp. nov. (Bacillariophyceae), molecular phylogeny and systematics of the genus and a new type of canal raphe system.
Sci. Rep Cited by: 5. Observations on the systematics of the genus Difflugia in Britain (Rhizopoda, Protozoa): Bulletin of the British Museum of Natural History (Zoology), Ogden, C.G. Notes on testate amoebae (Protozoa: Rhizopoda) from Lake Vlasina, Yugoslavia: Bulletin of the British Museum of Natural History (Zoology), Ogden, C.G.
ByBritain, France, Germany and the Netherlands all had major national bird collections, reflecting the dominance of systematics and faunistics in ornithological circles (Haffer, ).
Museums started later in North America – The American Museum of Natural History in New York was founded in – but their bird collections soon Cited by: 1. For genus or species level ID you need specialized taxonomic keys (if available) or expert assistance. and Guide To Insect Identification •How to Know the Immature Insects •Insects and Diseases of Woody Plants of the Central Rockies* •Pests of the West * Book title list hand-out.
Peterson’s Field Guide Orders •26 Orders: Many. Enterographa sorediata is a corticolous, crustose lichen endemic to the southern part of Great Britain where it is confined to old-growth woodlands.
This lichen is rarely fertile and mainly characterized by a sorediate thallus producing protocetraric acid. However, phylogenetic analyses using nuLSU, RPB2 and nuITS sequences suggest that E. sorediata belongs to the genus Syncesia and is. A great proportion of biodiversity is accounted for by organisms, particularly insects, intimately associated with plants.
Knowing whether ecological or phylogenetic factors chiefly influence the evolution of host plant associations is essential to understanding speciation in, and therefore factors influencing diversity of, phytophagous by: Collins DW (b).
A new genus and species of haplothripine thrips (Thysanoptera: Phlaeothripidae) with a prominent dorsal projection from the head. Insect Systematics and Evolution – Collins DW () Odontothrips confusus Priesner (Thysanoptera: Thripidae) new to Britain and recent records of other British thrips.
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Start studying Chapter Learn vocabulary, terms, and more with flashcards, games, and other study tools. an approach to systematics where the common ancestry is the primary criterion used to classify organisms a yardstick for measuring the absolute time of evolutionary change based on the observation that some genes and other regions.
Eucladoceros was a large deer, reaching metres ( ft) in body length and standing about metres ( ft) tall at the shoulder, only slightly smaller than a modern had a spectacular set of antlers which split into twelve tines per pedicle, and were up to metres ( ft) wide.
The most distinctive feature of Eucladoceros was its comb-like antlers, especially in E. : Mammalia. Full text of "Palaeontology or a systematic summary of extinct animals and their " See other formats.
SYSTEMATICS OF THE MUS SPECIES GROUP, THE HOUSE MOUSE, AND THE CLASSICAL INBRED STRAINS Commensal, feral, and aboriginal animals. Animals that are members of the genus Mus can be further classified according to their relationship to humankind. The house mouse represents one group within this genus that is characterized by its ability to live in close association.
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Nebela Nebela Leidy, (ref. ID; Cash () noted that the spines were seldom seen on specimens from Britain. From our observations we suggest that this was due mainly to their fragility, as they are easily lost in handling.
This type of test material would, in itself, be enough to remove the organism from the genus Difflugia. Notes on the Genera Alaria, Diathema, Dicroloma, &C.; Being A Supplement to "An Attempt at a Revision of the Strombidae and Aporrhaidae",American Journal of Conchology, American Journal of Conchology, Volume 5, Number 1: pages by Gabb, W.
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Literature Cited. The literature cited here includes all references to the type descriptions and major studies, primarily post-Tebble, that have influenced the systematics.
We have also included references to autecology, anatomy and functional morphology.Science, any system of knowledge that is concerned with the physical world and its phenomena and that entails unbiased observations and systematic experimentation. In general, a science involves a pursuit of knowledge covering general truths or the operations of fundamental laws.
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