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Topic: Calcaerous sponges

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	Sponge - Wikipedia, the free encyclopedia
		The sponges or poriferans (from the Greek poros "pore" and ferro "to bear") are animals of the phylum Porifera.
		Many sponges are found in the Cretaceous Lower Greensand and Chalk Formations of England, and in rocks from the upper part of the Cretaceous period in France.
		Sponges also live in quiet clear waters, because if the sediment is agitated by wave action or by currents, it tends to block the pores of the animal, lessening its ability to feed and survive.
	en.wikipedia.org /wiki/Sponge (1716 words)

	Sponge: Definition and Links by Encyclopedian.com
		Sponges, or poriferans, are animals of the phylum Porifera.
		Sponges are among the simplest of animals, with partially differentiated tissues but without muscles, nerves, and internal organs.
		Sponges are divided into Demosponges[?], Hexactinellid sponges, and Calcaerous sponges[?] based on the type of spicules in their skeleton.
	www.encyclopedian.com /sp/Sponge.html (674 words)

	Calcareous sponge (Site not responding. Last check: 2007-10-22)
		The Calcareous sponges belong to the Class Calcarea and are characterized by spicules made out of calcium carbonate (calcite).
		Calcareous sponge is a class of the Phylum Porifera.
		Calcareous sponges are generally characterized by their endoskeleton made up of spicules, they are sedentary filter feeders, and lack any real tissues.
	www.knowallabout.com /c/ca/calcareous_sponge.html (230 words)

	Sponge (Site not responding. Last check: 2007-10-22)
		Sponges have only three body types: asconoid, syconoid, and leuconoid It is thought that the earliest animal life on Earth resembled sponges.
		Another sponge, the Venus Flower Basket has some newly discovered uses involving fiber optics Sponges are divided into Demosponges, Hexactinellid sponges, and Calcaerous sponges based on the type of spicules in their skeleton.
		Sponges also live in quiet clear waters, because if the sediment is agitated by wave action or by currents, it tends to block the pores of the animal.
	www.aseannewsnetwork.de /articles/content/s/sp/sponge.html (1098 words)

	ca Porifera Sponges or poriferans are animal ...
		"Sponges", or "poriferans", are animals of the phylum phylum Porifera Porifera.
		Sponges have not been as extensively studied as some other phyla and there may be some surprises still to be found.
		Sponges are divided into Demosponges Demosponges, Hexactinellid Hexactinellid sponges, and Calcaerous sponges Calcaerous sponges based on the type of spicules in their skeleton.
	www.biodatabase.de /sponge (633 words)

	Sponge (Site not responding. Last check: 2007-10-22)
		Sclerosponges Taxobox-end Sponges, or poriferans, are animals of the Phylum (biology) Porifera.
		Sponges are among the simplest of animals, with partially differentiated tissues but without muscles, nerves, and internal organ (anatomy)s.
		Although 90% of modern sponges are demosponges, their fossilized remains are less common than those of other types because their skeletons are composed of relatively soft spongin that does not fossilize well.
	read-and-go.hopto.org /Animals/Sponge.html (1075 words)

	Sponge
		They are sessile, mostly marine, waterdwelling, filter feeders, pumping water through their matrix and filtering out particulates of food matter.
		Sponges are among the simplest of animals, with partially differentiated tissues but without muscles, nerves, and internal organss.
		The open end is called the osculum, and the interior is the spongocoel.
	www.teachtime.com /en/wikipedia/s/sp/sponge.html (551 words)

	Calcareous sponge (Site not responding. Last check: 2007-10-22)
		Typically Calcaerous sponges are very small ranging from 3-4 in height.
		Calcareous sponges are generally by their endoskeleton made up of spicules are sedentary filter feeders and lack any tissues.
		In The Bellstone, author Michael Kalafatas discovers a poem about Greek sponge divers written by his grandfather in the early 20th century, and using that as a starting point, travels to Greece to explore both the history of the sponge diving industry and...
	www.freeglossary.com /Calcaerous_sponges (501 words)

	wiki/Animal Definition / wiki/Animal Research (Site not responding. Last check: 2007-10-22)
		Porifera Sponges, or poriferans, are animals of the phylum Porifera.
		It is still disputed whether this event, called the Cambrian explosion, represents a rapid divergence between different groups or a change in conditions that made fossilization possible.
		Sponges are sessile and typically feed by drawing in water through poresA pore, in general, is some form of opening, usually very small.
	www.elresearch.com /wiki/Animal (8321 words)

	Sponge - Wikipedia
		In some ways they are closer to being cell colonies[?] than multicellular organisms.
		There are over 15000 modern species of sponges known, and more are being discovered every day.
		Porocytes[?] are tubular cells that make up the pores.
	wikipedia.findthelinks.com /sp/Sponge.html (511 words)

	Halkeria Definition / Halkeria Research (Site not responding. Last check: 2007-10-22)
		The Cambrian is the earliest period in whose rocks are located numerous large, distinctly-fossilizable multicellular organisms that are further complex than sponges or medusoids.
		The term is used in various branches of biology for various structures including hardened portions of sponges and mineralized portions of arthropod shells.
		Unlike sponge spicules, Early Cambrian Scelrites appear to be external armor rather than internal structural elements.
	www.elresearch.com /Halkeria (576 words)

	Wikipedia: Neoproterozoic
		The exact boundaries may vary somewhat with the person using the term.
		The Neoproterozoic covers a period of time in which fossils of multicelled life are found, but during which only algae and sponges amongst complex modern plants and animals can be clearly recognized.
		Most fall into ambiguous groups of frond-like animals(?); discoids that might be holdfasts for stalked animals(?) ("medusoids"); mattress-like forms; small calcaerous tubes; and armored animals of unknown provenance.
	www.factbook.org /wikipedia/en/n/ne/neoproterozoic.html (470 words)

	Calcaerous sponges
		Of the 15,000 orso species of Porfiera that exist, 150 of those are Calcaerous.
		Calcareous sponges are generally characterizedby their endoskeleton made up of spicules, they are sedentary filter feeders, and lack any real tissues.
		Calcareous sponges aremost commonly found in shallow tropical waters.
	www.therfcc.org /calcaerous-sponges-158752.html (224 words)

	Venus Flower Basket Sponge (Site not responding. Last check: 2007-10-22)
		The sponge, called the Venus Flower Basket, lives in the deep waters of the ocean.
		Another sponge, the Venus Flower Basket has some newly discovered uses involving fiber optics spicules need to be explained.
		Sponges are divided into Demosponges, Hexactinellid sponges, and Calcaerous.
	flower.4gifts.info /easter-flower/30986 (240 words)

	flower basket sponge (Site not responding. Last check: 2007-10-22)
		Venus' Flower basket The humble bath sponge (Spongia officinalis and a few relatives) is a drab, inert and lifeless object that gives little hint of the colour and...
		This is a sea creature, a sponge of sorts, that grows a glass skeleton.
		The delicately latticed Venus' flower basket sponge, Euplectella aspergillum, often shelters pairs of shrimp and as a result was once a symbol of marital fidelity in Japanese weddings.
	flower-basket-sponge.thequoins.info (1550 words)

	Animals
		The Bilateria, having bilateral symmetry, are a subregnum (a major group) of animals, including the majority of phyla; the most notable exceptions are the sponges and cnidarians.
		For the most part, Bilateria have bodies that develop from three different germ layers, called the endoderm, mesoderm, and ectoderm.
		A breed is a domesticated subspecies or infrasubspecies of an animal.
	www.shortopedia.com /A/N/Animals (1431 words)

	Barnacles. In: Marine Biodiversity - An Introduction. Author: Peter Dyrynda (Site not responding. Last check: 2007-10-22)
		It is enclosed within an array of thickened calcaerous plates.
		Multi-jointed, spiny appendages known as cirri are extended to form a sieving basket used to capture food particles.
		Some acorn barnacles are specialist colonizers of other marine organisms including sponges, corals, turtles and whales.
	www.solaster-mb.org /mb/cirripedia.htm (627 words)

	Sponge - Gurupedia
		Choanocytes (also known as collar cells), which line the spongocoel and function as the sponge's digestive system, are remarkably similar to the
		It has been suggested that the sponges are
		budding, where a piece of a sponge falls off and grows into a new one.
	www.gurupedia.com /s/sp/sponge.htm (600 words)

	ca Porifera Sponges or poriferans are...
		Sponges have only four types of cells: Choanocytes, which line the spongocoel and function as the sponge's digestive system, are remarkably similar to the protistan choanoflagellates.
		Sponges have only three body types: asconoid, syconoid, and leuconoid.
		Painting Murals Fast and Easy: 21 designs for walls or canvas you can paint with a sponge
	www.geodatabase.de /sponge (593 words)

	Science Fair Projects - Calcareous sponge
		Or else, you can start by choosing any of the categories below.
		Lithonida The Calcareous sponges belong to the Class Calcarea and are characterized by spicules made out of calcium carbonate (calcite).
		All three body plans are represented within class Calcarea : asconoid, syconoid, and leuconoid.
	www.all-science-fair-projects.com /science_fair_projects_encyclopedia/Calcaerous_sponges (384 words)

	[No title]
		It was about three hours afterward, following the first really heavy blast of the operation, that the shouting of the drill crew was heard; and that young Gedney - the acting foreman - rushed into the camp with the startling news.
		Early in the boring the sandstone had given place to a vein of Comanchian limestone, full of minute fossil cephalopods, corals, echini, and spirifera, and with occasional suggestions of siliceous sponges and marine vertebrate bones - the latter probably of teleosts, sharks, and ganoids.
		This, in itself, was important enough, as affording the first vertebrate fossils the expedition had yet secured; but when shortly afterward the drill head dropped through the stratum into apparent vacancy, a wholly new and doubly intense wave of excitement spread among the excavators.
	www.yuggoth.org /pub/hpl/mountainsofmaddness.txt (21292 words)

	Venus flower basket sponge (Site not responding. Last check: 2007-10-22)
		Class Hexactinellida Common name is Venus flower-basket A deep sea sponge found between 500 and 5000 meters below sea level.
		Choanocytes (also known as "collar cells"), flagellated cells which function as the sponge's...
		Research concerning the spicules of the Venus' Flower Basket promises to yield new technology with fiber...
	www.kh-boehmer.de /3710 (280 words)

	mountains (Site not responding. Last check: 2007-10-22)
		Early in the boring the sandstone had given place to a vein of Comanchian limestone, full of minute
		fossil cephalopods, corals, echini, and spirifera, and with occasional suggestions of siliceous sponges and marine vertebrate
		regularity of the clinging cube and rampart formations; a decision that the cave mouths indicate dissolved calcaerous veins; a
	daemon_sultan.tripod.com /mountains.html (18785 words)

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