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Topic: Nautiloid

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Ammonoidea

Nautilus

Brachiopod

Anomalocaris

Rugosa

Synapsid

Permian

Millipede

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Geologic timescale

Invertebrate

	Nautiloid - Wikipedia, the free encyclopedia
		The shells of fossil nautiloids may be either straight (as in Orthoceras and Rayonnoceras), curved (as in Cyroceras) or coiled (as in Cenoceras), or a hellical coil (as in Lorieroceras).
		Nautiloids are first known from the late Cambrian Fengshan Formation of northeastern China, where they seem to have been quite diverse (at the time this was a warm shallow sea rich in marine life).
		Nautiloids remained at the height of their range of adaptations and variety of forms throughout the Ordovician, Silurian, and Devonian periods, with various straight, curved and coiled shell forms coexisting at the same time.
	en.wikipedia.org /wiki/Nautiloidea (1565 words)

	Nautiloidea (Site not responding. Last check: 2007-10-12)
		Nautiloids possess of an external shell divided into chambers by walls known as septa.
		Nautiloids are distinguished from the very similar Ammonoids by the simple nature of the suture lines, and a siphuncle located usually along the center of the shell.
		Key features which are very important in nautiloid classification are the internal and external structure of siphuncle and the type of internal (cameral and siphuncal) calcareous "ballast" deposits.
	www.palaeos.com /Invertebrates/Molluscs/Cephalopoda/Nautiloidea.htm (443 words)

	Nautiloids: The First Cephalopods (Site not responding. Last check: 2007-10-12)
		Nautiloids show all the basic structures that went on to be adapted transformed and, in some cases, lost by their descendants.
		Whereas the nautiloids of the Ordovician were sluggish creatures and almost certainly unwieldy swimmers, this was not to their detriment as their prey animals were mainly bottom crawling arthropods, speed and dexterity would have not been a necessity.
		However, given the abundance of trilobites and nautiloids in the Ordovician, it seems unthinkable that the two groups did not exist in a predator/prey role, and it is quite possible that some of the larger forms of nautiloid could have attacked the smaller marine eurypterids as well.
	www.tonmo.com /science/fossils/nautiloids.php (5368 words)

	Nautiloid showcase (Site not responding. Last check: 2007-10-12)
		The Nautiloids are the oldest group of the cephalopods (squids), and they have always been marine animals.
		The nautiloids, like the ammonoids have an outer shell which is divided into chambers by walls (or septae) on the inside.
		The nautiloids were the ancestors of both the ammonoids and the coleoids (cephalopods with an inner shell).
	www.toyen.uio.no /palmus/galleri/montre/english/m_nautil_e.htm (171 words)

	NWAnews.com :: Northwest Arkansas' News Source
		They left their nautiloid where they found it, in a 30-foot-deep excavation somewhere in west Washington County, declining to be more specific of the whereabouts.
		The nautiloid found in January 2003 was documented at 8 feet in length and heralded as the world’s longest.
		Plans now are to donate the nautiloid to a future museum in the area that displays Northwest Arkansas history.
	www.nwanews.com /story.php?paper=nwat&storyid=32927 (714 words)

	Palaeos Invertebrates: Mollusca: Cephalopoda: Cephalopod Glossary (Site not responding. Last check: 2007-10-12)
		The nature of the cameral deposits are very useful in nautiloid classification.
		As an ammonoid or nautiloid cephalopod grew it moved its body forward in the shell secreting septa behind it, thereby adding new chambers to the shell.
		In Nautiloids they are very simple, but in some ammonoids they display astonishing fractal complexity.
	www.palaeos.com /Invertebrates/Molluscs/Cephalopoda/glosceph.htm (511 words)

	[No title] (Site not responding. Last check: 2007-10-12)
		In the summer of 1963 a rather rich fauna containing relics especially of nautiloid shells followed by tentaculites, badly preserved ostracodes and rarely brachiopods was developed in the layers situated over the clayey slates, the lenses or intercalations of dark gray sometimes almost fl limestones".
		57-59) nautiloid faunas occur in the Ukraine with different assemblages in at least four stratigraphic stages: early Wenlock, mid-late Ludlow, Prídolí, and Lochkovian with a hiatus corresponding to the interval between the late Wenlock and early Ludlow.
		The Raup and Crick (1979) statistical procedure was used to obtain a quantitative estimate of similarities between the different taxonomic content of these various nautiloid cephalopod faunas (Appendix I).
	palaeo-electronica.org /2002_2/gondwana/shelf.htm (1215 words)

	Prehsitoric FAQ ammonites and nautiloids (Site not responding. Last check: 2007-10-12)
		Both ammonites and nautiloids are cephalopods, marine invertebrates that have tentacles growing out of their heads.
		Advanced nautiloids have a shell coiled in a flat spiral that looks very much like the shell of an ammonite, so it’s easy to get the two confused.
		In both ammonites and nautiloids the interior of the shell is divided up into chambers by a series of bulkheads called septa.
	www.cc.whecn.edu /tate/faq_13.htm (183 words)

	Lake Temiscamingue Fossil Centre - Cephalopod (Site not responding. Last check: 2007-10-12)
		In Témiscamingue, Orthoceras nautiloids ranged from 5 cm to 3 metres long.
		Nautiloids were the first great marine carnivores capable of swimming freely.
		Today's nautilus is a direct descendant of the Nautiloid, while octopi and squid are indirect descendants.
	www.rlcst.qc.ca /en/303_5.html (129 words)

	Nautiloid Fossil
		They suffered less than some other orders at the end of the Permian, and did better than the ammonites by surviving the Cretaceous extinction, leaving one descendant, the modern-day Nautilus, of which there are 5 species.
		Nautiloids had stronger shells than the ammonites, and were capable of descending deeper than the ammonites could.
		This is a fine example of an nautiloid from the Cretaceous deposits of Madagascar, one that is sure to be a fine addition to any collection.
	www.fossilmall.com /EDCOPE_Enterprises/ammonites/Ammo71/Ammonite-71.htm (285 words)

	Specimens - Large Ammonite
		Class Cephalopoda: Ammonites and nautiloids are four-gilled cephalopods with an external shell divided into chambers by transverse plates or septa.
		Subclass Nautiloid (nautiloids) are characterized by a centrally located siphuncle and by a straight, curved, or coiled chambered external shell with simple sutures.
		An interesting and unique aspect of this large specimen is the occurrence of the nautiloid and ammonite together, suggesting synchronous deposition and subsequent fossilization.
	libraries.ou.edu /etc/geology/lammonite.asp (191 words)

	Mahantango Formation: Nautiloid - Spyroceras (Site not responding. Last check: 2007-10-12)
		Spyroceras: Spyroceras was a medium-sized, uncoiled nautiloid with a shell marked with distinct chamber undulations.
		It cannot be easily confused with any of the other orthocone in the Mahantango as a result of its distinct structure.
		NOTE: The angularity and difference in prominence of the ribbing, as well as the ribs (chambers) per inch suggest there are even two different species or subspecies involved here.
	mahantango.012webpages.com /mollusca/cephalopoda/nautiloidea/spyroceras.html (227 words)

	Shell-Shock: Three University Of Arkansas Students Find World's Longest Nautiloid Fossil (Site not responding. Last check: 2007-10-12)
		At exactly eight feet in length, their find represents the longest actinoceratoid nautiloid fossil in the world.
		Their excursion led them to a culvert near Interstate 540, where dime-sized ammonoid fossils were known to be abundant.
		In modern nautiloids, males and females show a difference in the diameter of their apertures -- the open end of the shell, where the organisms reside.
	www.sciencedaily.com /releases/2003/01/030127075642.htm (1102 words)

	Physical Geology
		Because of the lack of seafloor oxygen, there were no animals living in the mud that might have destroyed the nautiloid when it fell to the seafloor.
		In nautiloids, the animal only occupied about 1/3 the length of the shell.
		Consequently, this older portion of the shale was attacked by boring organisms, like sponges and endolithic algae, and the "tail" fell off during its life.
	highered.mcgraw-hill.com /sites/0072402466/student_view0 (922 words)

	Mosasaur Predation on Upper Cretaceous Nautiloids and Ammonites from the United States Pacific Coast -- KAUFFMAN 19 ... (Site not responding. Last check: 2007-10-12)
		Nautiloids with bite marks have been reported from the Pacific
		Penetration by three teeth on a larger segment of the same nautiloid, showing penetration up to the base of the tooth, producing a 1.0–5.0 mm crushed zone typical of mosasaur tooth marks (AT).
		bite that injured or killed the nautiloid and caused it to sink.
	palaios.geoscienceworld.org /cgi/content/full/19/1/96 (3229 words)

	Chronicles of the Eternal Wanderer - Ghost Ship
		The nautiloid was halved by the sudden closure of the wall!
		The other half of the nautiloid was burning in the vapors of the flow, a lifeless wreck.
		As for the nautiloid, they had been trailing the galleon for several days, hoping to strike it in the wildspace of Realmspace.
	spelljammer.org /tales/EternalWanderer/GhostShip.html (5542 words)

	MusicDish Industry e-Journal
		Rick Fulton "Nautiloid Reef" and "Nautiloid Surf" were the two major songs drafted after coming up with the proposed name of the group and before there was a final group to perform them.
		One drumbeat in the "Nautiloid Reef" had to be re-done and spliced in at the end of it.
		One radio station played "Nautiloid Reef" as a sort of test-market (unfortunately, I don't recall the station or the DJ who did it).
	www.musicdish.com /mag/index.php3?id=6486 (2665 words)

	Nautiloid Fossil
		Description: A spectacular nautiloid from Madagascar that has been sagitally split and polished to show wonderful detail within.
		Most of the individual chambers are filled with mahogany Calcite crystals, with the septa (divisions) between each chamber preserved as beige Calcite, making for a superb display piece.
		This is a fine example of a nautiloid from the Cretaceous deposits of Madagascar, one that is sure to be a fine addition to any collection.
	www.fossilmall.com /EDCOPE_Enterprises/ammonites/Ammo28/Ammo28.htm (289 words)

	VARIOUS ARTISTS Concussion ***
		Among the more interesting bootleg comps, this from-vinyl collection includes both sides of the ultra rare Nautiloids single, and a handful of other tasty nuggets as well.
		Its strong reverbed guitar and raging drums are complimented by a nasty sax and thundering bass.
		The other side of the ultra rare Nautiloids single is slower and moodier.
	www.reverbcentral.com /reviews/comp/concussion4335.html (688 words)

	Cretaceous Nautiloid
		Description: A spectacular nautiloid from Morocco which has been polished to show wonderful detail within.
		It has been drilled to accept a metal rod to allow it to be pivoted on its Calcite base while positioned in its life attitude, so as to be observed from any angle.
		This is a fine example of an nautiloid from the Cretaceous deposits of Morocco, one that is sure to be a fine addition to any collection.
	www.fossilmall.com /EDCOPE_Enterprises/ammonites/Ammo6/Ammo6.htm (278 words)

	BHI/Fossils & Minerals/Mollusks/Nautiloids
		Although there are many similarities between nautiloids and ammonites, it appears that ammonites had closer affinities to today's squids and octopi.
		Ammonites may have evolved from an ancient nautiloid more than 400 million years ago during the Silurian Period.
		Many recent squids and especially octopi seem to have descended from various ammonites during the Cretaceous Period.
	www.bhigr.com /pages/info/info_naut.htm (172 words)

	Links to other nautiloid Cephalopoda Site (Fossil Nautiloidea Page) (Site not responding. Last check: 2007-10-12)
		I found already the diagnoses of the genus Geisonoceras, and the family Geisonoceratidae in WWW (However, the type species of Geisonoceras is Orthoceras rivale Barrande).
		Two Pennsylvanian nautiloids are also figured in Kansas Fossils.
		Texas Cretaceous Ammonites and Nautiloids Houston Gem and Mineral Society Publication #5 - 439 Pages - $18.50.
	userpage.fu-berlin.de /~palaeont/fossilnautiloidea/fossnautlinks.htm (235 words)

	Nautiloid Yacht Club (Site not responding. Last check: 2007-10-12)
		The Nautiloids, dedicated to sailing and fun, is a cyber yacht club.
		Nautiloid Yacht Club - The Nautiloids, dedicated to sailing and fun, is a cyber yacht club.
		You can access every time you want The Nautiloids, dedicated to sailing and fun, is a cyber yacht club.
	www.wolist.com /wo/recreation/boating/associations-21384/339065.html (72 words)

	How much is this nautiloid - TONMO.com Forums
		From a casual look at Google it seems that one of the most common nautiloids from Caesar's Creek is Orthonybyoceras(aka Treptoceras), an orthocerid nautiloid.
		Here is another clearer picture of my nautiloid and another picture of what it looked like when I got it back in my dorm room.
		The thing next to the nautiloid reminds me of the apex of an endoceroid, but again, it is hard to tell from a photo, does it look flat or does it look like it could be a cylinder?
	www.tonmo.com /forums/showthread.php?p=42175 (585 words)

	Fossil fish, Ammonites, Orthoceras and other Fossils
		They make great decorator pieces as well as collectible for the fossil collection.
		This is a nice Polished Nautiloid from Madagascar.
		It lived in the Cretaceous Period some 63 to 130 Million Years ago.
	www.therockshed.com /fossils2.html (978 words)

	[No title] (Site not responding. Last check: 2007-10-12)
		Subject: [SPELLJAMMER] - Nautiloid 3D model - --============_-1338291870==_============ Content-Type: text/plain; charset="us-ascii" There's a picture of the Nautiloid I buildt attached to this message.
		Subject: Re: [SPELLJAMMER] - Nautiloid 3D model Since this file corruption seems to be a problem for so many, I've uploaded the Nautiloid picture to my website.
		The Nautiloid is one of my favorate ships.
	crpp0001.uqtr.uquebec.ca /w4/campagne/Downloads/Downloads_WotC/sj/www.darkwood.org/sj/misc/sjml/archives/1997/v1996.n243.txt (1288 words)

	World's Longest Nautiloid Fossil Discovered by Students (Site not responding. Last check: 2007-10-12)
		On Jan. 20, while the University community observed the Martin Luther King, Jr.
		Three undergraduate students from the University of Arkansas made a world-class discovery this week when they uncovered a 325-million-year-old nautiloid fossil...
		Note to creationists; divide age by a million.
	www.freerepublic.com /focus/f-news/856524/posts (1397 words)

	North Alabama Shell Club Newsletter--The Nautiloid (Site not responding. Last check: 2007-10-12)
		In September 1990, the North Alabama Shell Club began publishing a bimonthly newsletter called The Nautiloid, edited by Glen Deuel, a founding club member.
		The newsletter is used to disseminate information to members about shell-related topics and Club activities.
		In the future, articles from The Nautiloid will be available online from this page.
	home.hiwaay.net /~dwills/newsletr.html (53 words)

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