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	Lepidoderma mazonense (Site not responding. Last check: 2007-10-19)
		Lepidoderma mazonense is a member of an extinct group of arthropods called "sea scorpions" (eurypterids).
		The eurypterids were important predators in the oceans of the Pennsylvanian Period.
		The closest living relatives of eurypterids are the spiders and scorpions.
	www.museum.state.il.us /exhibits/mazon_creek/lepidoderma.html (46 words)

	Eurypterid - Wikipedia, the free encyclopedia
		Eurypterids were the most fearsome swimming predators of the Palaeozoic.
		Though fossils are a bit unclear, the typical eurypterid had a large, flat, semicircular carapace, followed by a jointed section, and finally a tapering, flexible tail, with a long spine at the end.
		Eurypterids are related to the modern horseshoe crab and sea scorpion.
	en.wikipedia.org /wiki/Eurypterid (525 words)

	Newsletter
		Chlupác, I. Pterygotid eurypterids (Arthropoda, Chelicerata) in the Silurian and Devonian of Bohemia.
		Tetlie, O.E. 2000: Eurypterids from the Silurian of Norway.
		Pterygotid eurypterid chelicera from the Siluro-Devonian of Victoria.
	palaeo.gly.bris.ac.uk /Communication/Eurypterids/Newsletter (2597 words)

	Eurypterida (Site not responding. Last check: 2007-10-19)
		Eurypterids : On the left, Eurypterus, is from the Silurian of New York state, USA (the fossil Eurypterus remipes was adopted as the state fossil in 1984).
		The eurypterids were among the largest and most fearsome marine predators of the Paleozoic.
		Eurypterids fossils are known from all continents, and have such amazingly good preservation that their external structure is the best known of all extinct animals.
	www.ucmp.berkeley.edu /arthropoda/chelicerata/eurypterida.html (307 words)

	Palaeos Invertebrates : Arthropoda : Eurypterida : Eurypterida (Site not responding. Last check: 2007-10-19)
		The eurypterid body is similar to that of other primitive arthropods, such as trilobites and horse-shoe crabs (Xiphosura).
		Eurypterid cuticle was chitinous and of varying thickness, but generally very thin, and preserved specimens (which were probably mostly molted skins) are usually crushed.
		However, Simon Braddy suggests that eurypterid reproduction occurred via spermatophore (sperm package) transfer on the substrate (in at least Baltoeurypterus); the type A appendage is in this case the female who is able to retrieve a spermatophore for storage in her spermathecae ('horn organs').
	www.palaeos.com /Invertebrates/Arthropods/Eurypterida/Eurypterida.htm (1757 words)

	Braddy (Site not responding. Last check: 2007-10-19)
		Eurypterid reproduction is reviewed and mating via spermatophore transfer on the substrate (in at least Baltoeurypterus) is proposed; the type A appendage (female) able to retrieve a spermatophore for storage in her spermathecae ('horn organs').
		Eurypterid respiration is interpreted as having involved lamellate gills within the branchial chambers for aquatic respiration and accessory Kiemenplatten (gill tracts), situated on the sternite for accessory aerial respiration and/or osmoregulation.
		A role for the eurypterid cuticular and marginal ornamentation in decreasing boundary layer turbulence and drag is proposed.
	palaeo.gly.bris.ac.uk /personnel/braddy/braddy.html (1341 words)

	Monster Eurypterid (Site not responding. Last check: 2007-10-19)
		The Eurypterids were among the largest and most fearsome marine predators of the Paleozoic age.
		Mixopterus is the most scorpion-like of the Eurypterids, and possibly the ancestor to all scorpions.
		This species was a diverse group of spiny Eurypterids and show in the fossil rocks of Norway that they may have been amphibious.
	www.paleoclones.com /marine/monster_eurypterid.htm (368 words)

	Cyclic Eurypterid Sequences
		Eurypterid horizons are well-known from the Silurian sequence of New York and Ontario, Canada.
		Several new horizons reveal other eurypterid occurrences in what is a cyclic sequence of "waterlimes." Waterlimes are very fine-grained dolostones with an admixture of clay and silica and which bear the eurypterid faunas.
		In summary, there is a lot more to the eurypterid occurrences of the Siluro-Devonian sequences than has previously been realized.
	remf.dartmouth.edu /paleonews/news/306334970.html (137 words)

	index
		Eurypterids (you-rip-ter-ids), fossils of which are locally abundant, were swimming by the millions in transitional environments--probably not the open sea--perhaps in shallow lagoons behind the receding reefs and in bays (
		Many animals, including the eurypterids, were compressed by the enormous weight of incoming sediments into the fossils found in the rocks underlying Pittsford today.
		The entombed animals are now fl because all that remains is the carbonized (fl) residue of their shells (exoskeletons). The rock is also fl because of the abundant fine carbonized (decomposed) organic material distributed throughout the matrix (ie.
	www.eurypterid.net (697 words)

	Eurypterid (Site not responding. Last check: 2007-10-19)
		They were formidable predators among the coral reefs that thrived in the warm, shallow seas of the Silurian period, around 410 million years ago.
		Under the head of the eurypterids were twelve body segments known as tergites.
		The tail, which is spiked and may have been poisonous, is known as the telson.
	www.kiwipedia.com /eurypterida.html (499 words)

	Eurypterids or Fossil Sea Scorpions from Herkimer New York
		The Eurypterid is the New York State Fossil.
		The largest of the arthropods Eurypterids were found in marine brackish and freshwater conditions during the Ordovician through the Pennsylvanian.
		All of these Eurypterids are from the Fiddler Green Formation, Phelps member, Upper Silurian of Herkimer County.
	www.nature-source.com /eurypterids.htm (218 words)

	Soom Shale Lagerstätte
		Recent research on the palaeophysiology of the eurypterids, extinct aquatic chelicerates, has revised our interpretations of their respiratory and reproductory capabilities.
		Eurypterid reproduction is interpreted as having involved indirect spermatophore transfer via the substrate; the female able to store a spermatophore in paired spermathecae until suitable environmental conditions prevailed for spawning.
		This palaeobiological evidence also supports the view that some eurypterids were capable of limited amphibious excursions, perhaps associated with their life-cycle (mass-moult-mate events).
	www.peripatus.gen.nz /paleontology/lagsoom.html (903 words)

	FossilNames
		Hugh Miller is a famous Scottish geologist, and while Sarle was studying his eurypterids, he realized that it was the 100th anniversary of this geologist--he named the new eurypterid
		The word is a combo, meaning "broad wings." When the first fossil was discovered, in 1818, it was thought to be the remains of a catfish.
		While this was first known from the rocks of eastern New York, it is now known to occur across New York State from Deck in the east, westward to Buffalo and into the Niagara Peninsula of Ontario, Canada.
	www.eurypterid.net /FossilNames.html (606 words)

	EurypteridLinkIndex
		This eurypterid occurs in windrows quite similar to those of the Bertie Group of New York State.
		Remains are collected into windrows, a current sorted accummulation of the remains of eurypterids and associated fauna.
		Researchers are currently trying to work out the evolutionary (time) de- velopment of this group of relatively common eurypterids.
	www.eurypterids.net /EurypteridLinkIndex.html (164 words)

	index
		Since this first discovery of eurypterids, thousands of other fossil remains of eurypterids have been reported from almost every continent.
		The Bertie Group is internationally known for the great variey of fossils of eurypterid remains that have been found over the years since their dis- covery in Eastern New York State.
		The author is well-known for his field studies of eurypterids and the rocks they are found in.
	eurypterids.net (533 words)

	eurypterid -- Encyclopædia Britannica (Site not responding. Last check: 2007-10-19)
		The eurypterids appeared at the beginning of the Ordovician Period (about 505 million years ago) and became extinct at the end of the Permian Period (about 245 million years ago).
		Frequently referred to as giant scorpions, most eurypterids were small animals, although Pterygotus…
		"eurypterid." Encyclopædia Britannica from Encyclopædia Britannica Premium Service.
	www.britannica.com /eb/article-9033278 (428 words)

	Langs Fossils: Eurypterid Hunting
		Our working quarry is only yards from the famous locality where some of the world's first eurypterids were found.
		from around the world have come to hear Allan Lang lecture on the geology of the area, and the spectacular eurypterids that are found here.
		We maintain an online museum exhibit, and viewings of our collection, in person, are possible by appointment.
	www.langsfossils.com /quarry.htm (115 words)

	Eurypterid Sea Scorpion Fossil
		Description: While Eurypterids (“Sea Scorpions”) are uncommon fossils worldwide, New York state is one of the few places where conditions for preservation have been ideal.
		The Eurypterid colonies of New York are distinctly localized, with two being found above and two below the salt beds of what was termed the Salina Series.
		These colonies are presumed to be breeding pools of brackish to partly open basins.
	fossilmall.com /EDCOPE_Enterprises/invertebrates/Invert3/Invert3.htm (298 words)

	eurypterid - OneLook Dictionary Search
		Tip: Click on the first link on a line below to go directly to a page where "eurypterid" is defined.
		eurypterid : The American Heritage® Dictionary of the English Language [home, info]
		Eurypterid : Terms of Paleontological Endearment [home, info]
	www.onelook.com /?w=eurypterid&ls=a (118 words)

	eurypterid -- Britannica Concise Encyclopedia - Your gateway to all Britannica has to offer! (Site not responding. Last check: 2007-10-19)
		eurypterid -- Britannica Concise Encyclopedia - Your gateway to all Britannica has to offer!
		Member of an extinct order (Eurypterida) of arthropods, similar in body plan to the horseshoe crab, that lived c.
		Frequently referred to as giant scorpions, most eurypterids were small, although Pterygotus buffaloenis, a species from the Silurian period, was the largest arthropod ever known, reaching a length of about 10 ft (3 m).
	concise.britannica.com /ebc/article-9364022?tocId=9364022 (74 words)

	LOWER MIDDLE DEVONIAN EURYPTERID REMAINS FROM THE TROUT VALLEY FORMATION OF NORTH-CENTRAL MAINE (Site not responding. Last check: 2007-10-19)
		At least one body fragment apparently is derived from the Eurypterid family Stylonuridae, based on well-developed sculptural tubercles and knobs.
		A terminal tarsal (leg) segment bearing a single ancillary spine, and a stout intermediate leg segment, are more consistent with the leg structure of Grossopterus of the family Hughmilleridae.
		All other forms of reproduction and/or transmittal are prohibited without written permission from GSA Copyright Permissions.
	gsa.confex.com /gsa/2002NE/finalprogram/abstract_31121.htm (455 words)

	Definition of eurypterid - Merriam-Webster Online Dictionary
		Learn more about "eurypterid" and related topics at Britannica.com
		Find more about "eurypterid" instantly with Live Search
		See a map of "eurypterid" in the Visual Thesaurus
	www.m-w.com /cgi-bin/dictionary?book=Dictionary&va=eurypterid (62 words)

	Fossil hunt, NY and Canada; May 2004
		On April 30 — May 1st, I took a trip to Canada and New York with the Times Scientific group.
		The reason for this trip, for me, was to find a Eurypterid.
		Once there, a seasoned Eurypterid collector showed us the ropes, and lent us a shovel (which no one thought to bring) to clear the overburden.
	www.fossilguy.com /trips/18mile_may2004/18mile_may2004.htm (396 words)

	Crustacean Fossils for Sale (Site not responding. Last check: 2007-10-19)
		A nicely preserved positive and negative split eurypterid fossil with great details on the head.
		The large one is 3 inches long, and is half preserved as a positive (it was 3-d but split).
		A nicely preserved split fossil eurypterid slab with 2 mostly complete specimens.
	www.paleoguy.com /crust.htm (144 words)

	DLESE description of Prehistoric Pittsford: The Silurian Eurypterid Fauna (Site not responding. Last check: 2007-10-19)
		DLESE description of Prehistoric Pittsford: The Silurian Eurypterid Fauna
		A resource for the geology and fossils of Pittsford, New York, this website includes information on arthropods, specifically the Eurypterid fauna as well as photographs of other fossils.
		Links to northern New York Ice Age and glaciation information and the local geology of Pittsford and the Erie Canal are also provided.
	www.dlese.org:8080 /dds/catalog_DLESE-000-000-001-632.htm (77 words)

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