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Topic: Chitinozoa

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Acritarchs

Palynology

Dinoflagellate

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	Acritarchs and Chitinozoa
		Chitinozoa are flask-shaped sacs or vesicles, their surface may be smooth, striated, granular, spongy, spiny or ornamented with branching appendages.
		The chain-forming attribute of many chitinozoa is an important clue, the generally accepted theory is that the chitinozoa are the eggs of a metazoan, as long coiled chains of eggs are known in some groups for instance polychaete worms and molluscs.
		Chitinozoa are large enough to be captured in twenty micron gauzes and are often prepared for separately.
	www.ucl.ac.uk /GeolSci/micropal/acritarch.html (1873 words)

	Classification of Chitinozoa (Llandoverian, Canada) Using Image Analysis (Site not responding. Last check: 2007-11-06)
		Chitinozoa (Llandoverian, Canada) were studied using image analysis.
		Results of the two methods were used as variables in a hierarchical cluster analysis in order to group the samples.
		These results show that Chitinozoa can be significantly classified in terms of taxa using independent shape parameters obtained by image analysis.
	www.edpsciences.org /articles/mmm/abs/1996/05/mmm0525/mmm0525.html (236 words)

	Chitinozoa were exclusively marine microorganisms and were distributed globally (via CobWeb/3.1 ... (Site not responding. Last check: 2007-11-06)
		Chitinozoa were exclusively marine microorganisms and were distributed globally.
		It was discovered, through the study of Silurian Chitinozoa in Gotland, that the abundance of chitinozoa is almost directly proportionate with the contents of calcium carbonate in the rocks.
		A decrease in the percent of calcium carbonate is coupled with and increased abundance of chitinozoa.
	hoopermuseum.earthsci.carleton.ca.cob-web.org:8888 /2001_chitinozoa_ms/distribution2.html (81 words)

	BIOSTRATIGRAPHY (Site not responding. Last check: 2007-11-06)
		Some Caradocian and Arenigian species of Chitinozoa have been previously described from the western part of the Baltic Syneclise (the Leba area), and from the Holy Cross Mts and, lastly, from Pomerania.
		In the Sokolica 1 and in the Klewno 1 boreholes, situated in the Ketrzyn region (eastern part of the Baltic Syneclise), 14 species from 8 genera have been recorded from the Arenigian to the Lower Ashgillian strata.
		The assemblages of Chitinozoa are presented against a background of Conodont stratigraphy.
	www.pan.pl /bulletin/EARTH/1.99.Geo.htm (626 words)

	[No title] (Site not responding. Last check: 2007-11-06)
		Chitinozoa systematics and biozonation of the Aeronian and lower Telychian in four boreholes of the western Brabant Massif (Belgium).
		Verniers, J. Chitinozoa biozonation and systematics of the Wenlock succession of the Builth Wells District, Wales, U.K. CIMP Symposium and Workshops, Pisa, Sept. 11-15, 1998.
		As a part of the formal proceedings, a meeting of the Subcommission on Chitinozoa was held on September 14.
	www.cimp.ulg.ac.be /cn18.doc (9775 words)

	academics.utep.edu/geology > Faculty > Dr. William C. Cornell
		His research activity has encompassed a variety of microfossil groups and has spanned much geologic time.
		Studies include Devonian and Mississippian chitinozoa, Permian radiolarians, Cretaceous chrysophytes, dinoflagellates, foraminifera, and silicoflagellates, Tertiary silicoflagellates, and Plio/Pleistocene spores and pollen.
		Most of these studies have been conducted on strata of the El Paso region.
	academics.utep.edu /Default.aspx?tabid=31402 (126 words)

	cimpsubc (Site not responding. Last check: 2007-11-06)
		The Chitinozoan Subcommission represents the interests of a group of international workers who either work directly with or share an interest in Chitinozoa.
		To receive a copy of the newsletter or to contribute please contact either of the subcommission officers.
		Chitinozoa Bibliography Project, listing all publications dealing with chitinozoans
	www.cimp.ulg.ac.be /cimpsubc.html (110 words)

	A CONODONT-, GRAPTOLITE, AND CHITINOZOA-BASED SILURIAN (UPPER LLANDOVERY-PRIDOLI) CHRONOSTRATIGRAPHY (Site not responding. Last check: 2007-11-06)
		The newly revised Silurian composite includes range-data on more than 370 conodont, graptolite, and chitinozoa species and forms the basis for a revised Silurian chronostratigraphy that is now comparable with the one proposed by the Subcommission on Silurian Stratigraphy in 1995 (SSS).
		All of the graptolite biozones utilized by the SSS from the upper Llandovery (lower, but not lowest, Telychian) through the Pridoli can be recognized as chronozones, and in the same ascending order.
		It is also possible to recognize as chronozones seven of the 11 chitinozoa biozones utilized by the SSS, and eight of the 12 chitinozoa biozones recognized by Verniers and others (1995) for the upper Llandovery (Telychian)-Pridoli in the revised Silurian chronostratigraphy.
	gsa.confex.com /gsa/2001NC/finalprogram/abstract_5621.htm (264 words)

	[No title]
		Using similar methods, melanosclerites are described, their taxonomic status reinterpreted and their affinity reinterpreted.
		An extensive ultrastructural study of Chitinozoa biology has lead to an ontogenetic, and phylogenetic reinterpretation.
		They are concluded to be the extinct representatives of the protozoan sarcodines.
	library2.usask.ca /theses/available/etd-10212004-000459 (196 words)

	NEWLY REVISED AND CALIBRATED CONODONT-, GRAPTOLITE-, AND CHITINOZOA-BASED SILURIAN CHRONOSTRATIGRAPHY DEVELOPED USING ... (Site not responding. Last check: 2007-11-06)
		Ranges of over 400 conodont, graptolite, and chitinozoa species in 63 stratigraphic sections in North America, Europe, and Australia comprise the framework for a Silurian (upper Llandovery-Pridoli)-lowest Devonian (Lochkovian) chronostratigraphy developed using the graphic correlation method and recently revised with the inclusion of additional stratigraphic sections containing much new range data.
		The upper Llandovery-lowest Lochkovian chronostratigraphy recognizes 20 conodont chronozones, 24 graptolite chronozones, and seven chitinozoa chronozones, as well as seven conodont subchronozones and four chitinozoa subchronozones.
		Isotopic data from near the Llandovery/Wenlock, Wenlock/Ludlow, and Silurian/Devonian boundaries, the Ludlow-Pridoli succession of the Simpson Park Range 1, Nevada, United States section, and the upper Llandovery-Wenlock succession of the Cellon, Austria section facilitate the development of a calibrated time scale for the Silurian (late Llandovery-Pridoli).
	gsa.confex.com /gsa/2002NC/finalprogram/abstract_32262.htm (348 words)

	Palaeobotany Research at Weston Observatory - Boston College (Site not responding. Last check: 2007-11-06)
		The Martinsburg Formation in West Virginia has yielded some scrappy Ordovician acritarchs.
		The Harding Sandstone in Colorado (Caradoc) contains a mixed palynological assemblage that includes the probable Chlorococcalean alga, Tapetisphaerites formale alon g with acritarchs and chitinozoa.
		The research on the Arisaig section is part of the recently completed PhD thesis work of John Beck (1998) sponsored by the National Science Foundation.
	www.bc.edu /research/westonobservatory/researchlist/paleo (1631 words)

	PALYNOLOGY AND GEOSCIENCE MAN TOPICS
		Bockelie, T.G. Early Ordovician Chitinozoa from Spitsbergen PAL 4 1
		Grahn, Y. Landoverian and early Wenlockian Chitinozoa from southern Ohio and PAL 9 147
		Wood, G.D. Organic-walled microphytoplankton and chitinozoans from the Middle PAL 9 133
	www.geo.arizona.edu /palynology/topics.html (4234 words)

	microfossils
		The fact that conodonts are relatively common in rocks of Palaeozoic age, a period when other microfossil groups are either not present or scarce, has made them extremely useful stratigraphic tools.
		Together with acritarchs, chitinozoa and spores, conodonts are the primary microfossils available to palaeontologists working on Ordovician to Permo-Triassic strata.
		Untill the nineteen eighties their biological affinities were still not known.
	earthsci.org /fossils/microfossils/microfossils.html (8256 words)

	[No title] (Site not responding. Last check: 2007-11-06)
		Balanoglossus which has a 6' long alimentary canal, a solid dorsal nerve and a chitinous skeleton.
		However, during the lower part of the Paleozoic Era the Hemichordata were very important because they included two very diverse, abundant and biostratigraphically important groups called the graptolites and chitinozoa.
		The Phylum Chordata has a tremendously large evolutionary potential.
	www.geol.lsu.edu /deltaweb/LECTURES/EARTHSCIENCE/chapt7.htm (5598 words)

	Find in a Library: Silurian Chitinozoa from Gotland
		Find in a Library: Silurian Chitinozoa from Gotland
		To find this item in a library, enter a postal code, state, province, or country in the field above.
		WorldCat is provided by OCLC Online Computer Library Center, Inc. on behalf of its member libraries.
	www.worldcatlibraries.org /wcpa/ow/01c8851eadae5e73.html (43 words)

	Publications, 2001
		Chitinozoa biostratigraphy of subsurface Ordovician sediments from the Lohme 2/70 well, Island of Rugen (NE-Germany).
		NEUES JAHRBUCH FUR GEOLOGIE UND PALAONTOLOGIE-ABHANDLUNGEN 222 : 1-2, p.
		Ordovician-Silurian palynostratigraphy (Chitinozoa and acritarchs) of the G14-1/86 borehole, southern Baltic Sea.
	www.palaeontology.geo.uu.se /Publications/sv2001.html (601 words)

	INSTRUCTIONS FOR AUTHORS (Site not responding. Last check: 2007-11-06)
		Bockelie, T.G. 1980 Early Ordovician Chitinozoa from Spitsbergen PAL 4 1-14
		Davies, E.H. 1985 The miospore and dinoflagellate cyst Oppel-zonation of the Lias of Portugal PAL 9 105-132
		Turner, R.E. 1985 Acritarchs from the type area of the Ordovician Llandeilo Series, south Wales PAL 9 211-134
	www.palynology.org /content/Palynology/abiblo.html (6130 words)

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