21. Cephalopod - New World Encyclopedia cephalopods (Greek plural Κεφαλόποδα (kephal poda); headfoot ) are marine mollusks (phylum Mollusca) of the class Cephalopoda, a group that includes the familiar octopus http://www.newworldencyclopedia.org/entry/Cephalopod

Cephalopod From New World Encyclopedia Jump to: navigation search Previous (Cephalochordata) Next (Ceramic) Cephalopods Juvenile cephalopod from plankton Antarctica Scientific classification Kingdom: Animalia Phylum: Mollusca Class: Cephalopoda Cuvier Orders Subclass Nautiloidea †Plectronocerida †Ellesmerocerida †Actinocerida †Pseudorthocerida †Endocerida †Tarphycerida †Oncocerida †Discosorida Nautilida †Orthocerida †Ascocerida †Bactritida Subclass † Ammonoidea †Goniatitida †Ceratitida †Ammonitida Subclass Coleoidea †Belemnoidea †Aulacocerida †Belemnitida †Hematitida †Phragmoteuthida Neocoleoidea (most living cephalopods) Sepiida Sepiolida Spirulida Teuthida Octopoda Vampyromorphida Cephalopods (Greek plural (kephalópoda); "head-foot") are marine mollusks (phylum Mollusca) of the class Cephalopoda , a group that includes the familiar octopus and squid . Cephalopods are characterized by bilateral body symmetry , a prominent head, and a modification of the mollusk foot into the form of arms or tentacles surrounding the mouth, which has beak-like jaws. Cephalopods have the most complex nervous system among invertebrates , and large and image-focusing, vertebrate -like eyes . The highly developed neural organs allows them to have an excellent capacity to learn and remember; nonetheless, most are short-lived, in the order of months or a few years.

22. ORTHOCERAS STRAIGHT CEPHALOPOD FOSSILS T he term 'straight' cephalopods is used here to describe fossil examples of straight ammonoids called Baculites, straight nautiloids called Orthoceras http://www.paleodirect.com/strceph1.htm

MUSEUMS CHOICE DINOSAURS / REPTILES INVERTEBRATES TRILOBITES ... FOSSIL FRAUD STRAIGHT CEPHALOPOD FOSSILS T he term 'straight' cephalopods is used here to describe fossil examples of straight ammonoids called Baculites, straight nautiloids called Orthoceras and Belemnites. Cephalopods evolved during the Late Cambrian Period. Their bodies were predominantly elongate with conical shells. Some of these creatures evolved into semi-coiled forms eventually giving rise to coiled cephalopods like ammonites and nautili. Another branch of straight-shelled cephalopods continued to coexist with the coiled forms on into the Pennsylvanian Period. These straight forms were much less diverse and abundant than the coiled cephalopods, as a whole. Straight cephalopods were among the most advanced invertebrates of their time having eyes, jaws, and a sophisticated nervous system. These creatures were predators that swam freely using a jet propulsion system by squirting water from their bodies. They had tentacles and ink sacs also much like the present-day squid. Except for belemnites, cephalopods

23. Other_Cephalopoda Provides photographs and information on fossils of the nautiloid cephalopods and the belemnite, Neohibolites found in the Gault Clay in Kent, UK. http://www.gaultammonite.co.uk/Pages/Link_Pages/Other_Cephalopoda_Link.htm

CEPHALOPODA (other than the Ammonoidea) In contrast to the Ammonoidea, Nautiloid cephalopods are relatively infrequent and belong to a few long-ranging genera of world-wide distribution. Calcified beaks of Nautiloids, known as Rhynchoteuthis, have also been found. An example of each is figured below. NAUTILACEA; NAUTILIDAE Eutrephoceras clementinum (d'Orbigny) - from Folkestone, Kent NAUTILICEAE; NAUTILIDAE Rhynchoteuthis (a calcified Nautilus beak) - from Folkestone, KENT BELEMNITIDAE; NEOHIBOLITES Stolley Guards of the belemnite Neohibolites are ubiquitous in the Gault of Kent and because of their resistant nature make up a large part of the weathered out fossil debris. Typical examples from the Albian of Kent are figured below: Neohibolites ernsti Spaeth Neohibolites minimus Miller Late Albian Hysteroceras varicosum Subzone - near Maidstone, KENT Lower Bed VII - Middle Albian lautus/nitidus Subzoneof Folkestone, KENT with thanks to Dr. Simon Mitchell (University of the West Indies) for the identification of

24. Cephalopoda - Fossil Wiki, The Paleontology Wiki The cephalopods are the mollusc class Cephalopoda characterized by bilateral body symmetry, a prominent head, and a modification of the mollusk foot, a muscular hydrostat, into http://fossil.wikia.com/wiki/Cephalopods

Wikia Skip to Content Skip to Wiki Navigation Skip to Site Navigation Wikia Navigation Start a wiki Entertainment Fall TV Glee ... Fossil Wiki Fossil Wiki Navigation In the news Article navigation Recent changes Random page ... The Field Site Random Page Wiki Activity Watchlist Recent changes Talk Cephalopoda Edit (Redirected from Cephalopods Edited by View full history Cephalopods Fossil range: Late Cambrian Recent Scientific classification Kingdom Animalia Phylum Mollusca Class Cephalopoda Cuvier Orders Subclass Nautiloidea Plectronocerida Ellesmerocerida Actinocerida ... Discosorida [Nautilida]] Orthocerida Lituitida Dissidocerida Bactritida Subclass Ammonoidea Goniatitida Ceratitida Ammonitida Subclass Coleoidea Belemnoidea Aulacocerida Belemnitida ... Neocoleoidea (most living cephalopods) Boletzkyida Sepiida Sepiolida Spirulida ... Vampyromorphida The cephalopods are the mollusc class Cephalopoda characterized by bilateral body symmetry, a prominent head, and a modification of the mollusk foot, a muscular hydrostat, into the form of arms or tentacles. Two important extinct taxa are Ammonoidea, the

25. Cephalopods - Class Cephalopoda cephalopods. Image (C) Kevin Davidson. Please choose an order from the table below http://www.angelfire.com/mo2/animals1/cephalopod/cephalopod.html

Cephalopods Image (C) Kevin Davidson Please choose an order from the table below: Octopods Squid Cuttlefish Sepiolids Deep-sea Vampire Squid Nautiluses Class Cephalopoda Cephalopods are a small class of mollusks arguably containing the most intelligent of all the invertebrates. There are approximately 650 living species, ranging from the tiny paper nautilus to the giant squid. The name "Cephalopoda" literally means "head-foot", as the foot is directly attached to the head. This is one of several characteristics that most members of this class share. The most noticeable characteristic is the tentacles. Ranging in number from 8 to 90 depending on the species, these tentacles form a crown around the head and are specialized for grasping prey. These tentacles are specialized feet, and are sometimes equipped with suckers for extra grip. These suckers may be further equipped with hooks. This class has a very specialized foot known as the siphon, or hyponome, and enables them to locomote. Water is drawn into the mantle cavity and then forcibly expelled through the siphon, creating a jet propulsion that shoots them forward, backward, up, down, side to side, depending on what direction the siphon is pointed. Most cephalopods have a chambered shell, the most notable example being the nautilus with its large, snail-like shell. Other cephalopods, such as squid or cuttlefish, have a smaller, internal shell. Octopods lack shells entirely.

26. CephBase - Cephalopod (Octopus, Squid, Cuttlefish And Nautilus) Database CephBase is a dynamic databasedriven web page on cephalopods (octopus, squid, cuttlefish and nautilus). Complete classification of the 786 species, synonymies, common names http://www.cephbase.utmb.edu/

For comments, questions and corrections email cephbase@hotmail.com Co-creators: James B. Wood and Catriona L.Day Maintained by: Catriona Day Welcome to CephBase A database-driven web site on all living cephalopods (octopus, squid, cuttlefish and nautilus) June 16, 2006 CephBase is a dynamic relational database-driven web site that has been online since 1998. CephBase provides taxonomic data, distribution, images, videos, predator and prey data, size, references and scientific contact information for all living species of cephalopods (octopus, squid, cuttlefish and nautilus) in an easy to access, user-friendly manner. Species Database: Search by scientific, common name or synonym to call up species-specific pages with information such as full taxonomy, type species, names, size, predators, prey, biogeography, distribution maps, country lists, life history, images, videos, references, genetic information links and other internet resources. Image Database: Search our 1642 cephalopod images which cover all life stages, behaviour, ecology, taxonomy as well as many other aspects of these amazing animals. Each image has a caption, key words, location, photographer and other data. Please take a look at: The CephBase Image Database; Cataloging color, shape and texture

27. ADW: Cephalopoda: Information There are approximately 650 to 700 extant species of cephalopods in two subclasses and five orders. cephalopods are strictly marine and are found in all of the world's oceans. http://animaldiversity.ummz.umich.edu/site/accounts/information/Cephalopoda.html

Overview News Technology Conditions of Use ... Home Kingdom Animalia Phylum Mollusca Class Cephalopoda Class Cephalopoda octopuses and squids Information Pictures Specimens Classification editLink('skunkworks/.accounts/948113ed-0725-4ec7-aa3f-e92aeeadf227') 2010/10/09 00:47:56.822 GMT-4 By Kristen Wheeler and Daphne G. Fautin Kingdom: Animalia Phylum: Mollusca Class: Cephalopoda Members of this Class There are approximately 650 to 700 extant species of cephalopods in two subclasses and five orders. Cephalopods are strictly marine and are found in all of the world's oceans. All cephalopods are carnivorous. The strong beak is at the entrance to the buccal cavity , on the floor of which lies the radula. There are two pairs of salivary glands , one of which may be poisonous. The digestive tract consists of three parts: esophagus , which may contain a crop; stomach , which mashes food; and caecum , where most digestion and absorption occur. The posterior portion of the caecum contains a diverticulum that serves as an ink gland, producing a suspension of melanin that can be expelled through the mantle cavity. Locomotion in cephalopods is accomplished mainly by jet propulsion. To close its mantle completely, a squid fits two cartilaginous ridges on the mantle wall into two cartilaginous grooves on the opposite funnel wall; contraction of circular muscles around the mantle cavity then forces water out the funnel. The funnel can be aimed, allowing the animal to change its direction. Locomotion in other cephalopods can be accomplished by other means. Octopoids can use their arms to "walk," and sepioids and teuthoids possess lateral fins that can propel the animal.

28. Fossil Cephalopods In Utah A pictorial guide to fossil cephalopods of Utah including Ammonoidea, Nautiloidea, and Coleoidea. http://www.ammonoid.com/index.htm

Utah Fossil Cephalopods Utah Fossil Cephalopods in Time Utah Fossil Cephalopods in Space Some Large Ammonites from Utah ... Fossil Cephalopod Links Latest Find: Heteromorph from the Turonian part of the Mancos Shale Under Utah Fossil Cephalopods you will see lists of Utah's fossil cephalopods in systematic, biostratigraphic and alphabetic form. There is also a list of references for information on the cephalopods from utahs rocks. Some of the more detailed pages of localities or faunas are linked from there. Under Utah Fossil Cephalopods in Time you will find a geologic time chart with links to the different Systems or Periods, from there, links to stages or biozones showing representative fossils from each stage or biozone can be found. Utah Fossil Cephalopods in Space has a map showing localities where I have found fossil cephalopods, and a few other maps that I am working on. Some Large Ammonites from Utah has pictures of the large (over 10", 250mm) I have found. A few of the localities I find fossils at are shown in Some Fossil Cephalopod Bearing Rocks . Some of my favorite Fossil Cephalopod Links are listed in the last section.

29. Orthocerida - Wikipedia, The Free Encyclopedia Orthocerida is an order of extinct nautiloid cephalopods also known as the Michelinocerda that lived from the Early Ordovician (490 million years ago) possibly to the Late http://en.wikipedia.org/wiki/Orthocerida

Orthocerida From Wikipedia, the free encyclopedia Jump to: navigation search Orthocerida Fossil range: Lower Ordovician–Upper Triassic PreЄ O S D ... Scientific classification Kingdom: Animalia Phylum: Mollusca Class: Cephalopoda Subclass: Nautiloidea Order: Orthocerida Kuhn Families Orthoceratidae Michelinoceratidae ... Lamellorthoceratidae Orthocerida is an order of extinct nautiloid cephalopods also known as the Michelinocerda that lived from the Early Ordovician million years ago ) possibly to the Late Triassic million years ago ). A fossil found in the Caucuses suggests they may even have survived until the Early Cretaceous million years ago ). They were most common however from the Ordovician to the Devonian Contents Shell form Ecology Taxonomy Evolutionary history ... edit Shell form The shell is usually long, and may be straight (" orthoconic ") or gently curved. In life, these animals may have been similar to the modern squid , except for the long shell. The internal structure of the shell consists of concavo-convex chambers linked by a centrally-placed tube called a siphuncle . There is a tendency for the chambers to develop cameral deposits , which were used as ballast to balance the long gas-filled shell. Depending on the

30. Cephalopods The Living World of Molluscs Among the cephalopods there are the largest invertebrates on earth. Their nervous system is developed to a much higher degree than that of other http://www.weichtiere.at/english/cephalopoda/main.html

31. Cephalopod - Profile Of Cephalopods cephalopods are mollusks in the Class Cephalopoda, which includes octopuses, squid, cuttlefish and nautilus. These are ancient species that are thought to have originated about http://marinelife.about.com/od/invertebrates/p/cephalopod.htm

zWASL=1;zGRH=1 zJs=10 zJs=11 zJs=12 zJs=13 zc(5,'jsc',zJs,9999999,'') zDO=0 Home Education Marine Life Marine Life Search Marine Life Animal Profiles Habitats Help Marine Life ... Share w(x2+zWl+'?p=1" zT="18/1[N" rel="nofollow">Print') Free Marine Life Newsletter! Sign Up Discuss in my Forum Cephalopods By Jennifer Kennedy , About.com Guide See More About: octopuses squid nautilus cuttlefish ... calamari Octopus spotted by NOAA researchers during the 2002 Submarine Ring of Fire Expedition Courtesy NOAA/Office of Ocean Exploration and Research zSB(3,3) Cephalopods are mollusks in the Class Cephalopoda, which includes octopuses, squid, cuttlefish and nautilus. These are ancient species that are thought to have originated about 500 million years ago. There are about 800 species of cephalopods in existence today. Description: Characteristics of Cephalopods All cephalopods have a ring of arms surrounding their head, a beak made of chitin , a shell (although only the nautilus has an exterior shell), a merged head and foot, and eyes that can form images. Cephalopods are intelligent, with relatively large brains. They are also masters of camouflage, changing their color and even pattern and texture to match their surroundings. They range in size from less than 1/2 an inch long to about

32. Cephalopods Phylum Mollusca (PrecambrianRecent) Class Cephalopoda (Cambrian-Recent) Subclass Coleoidea (Devonian-Recent) http://paleo.cortland.edu/tutorial/Ceph&Gast/cephalopods.htm

CEPHALOPODA, GASTROPODA CEPHALOPODS Phylum Mollusca (Precambrian-Recent) Class Cephalopoda (Cambrian-Recent) Subclass Coleoidea (Devonian-Recent) Subclass Nautiloidea (Cambrian-Recent) Subclass Ammonoidea (Devonian-Cretaceous) Class CEPHALOPODA The cephalopods are a class of mobile mollusks, most of which are nektic or nekto-benthic. Cephalopods have a bilaterally symmetrical body, a prominent head, and a modified foot in the form of tentacles. Although during the Paleozoic and Mesozoic, cephalopods achieved great diversity and abundance in marine habitats, only two genera possessing skeletons are known today. See the example of a Nautilus. Superficially the shell or conch of cephalopods resemble gastropods; however, most cephalopods coil in a plane, whereas gastropods are helicoiled. Furthermore, in cephalopods with an external conch, the coiled shell is chambered. Cephalopod Morphology Some morphologic terms you should become familiar with are given below.

33. BBC - Wildlife Finder - Cephalopods Facts, Pictures & Stunning Videos The cephalopods are a class of molluscs. http://www.bbc.co.uk/nature/class/Cephalopod

34. Cephalopods (Cephalopoda) On The Shores Of Singapore Fact sheet with photos on flora and fauna of Singapore's intertidal shores http://www.wildsingapore.com/wildfacts/mollusca/cephalopoda.htm

wildsingapore homepage wildfactsheets homepage wild shores of singapore blog all animals ... search cephalopods text index photo index Phylum Mollusca squids and cuttlefihes octopuses Cephalopods Class Cephalopoda updated Oct 08 if you learn only 3 things about them ... Cephalopods are molluscs but (except the Natilus) lack external shells. They move by jet-propulsion and have many arms. Most can rapidly change their colours and even skin texture. Where seen? Cephalopods can be commonly seen on many of our shores. Octopuses, in particular, are far more common than most people would imagine. They are usually well hidden or camouflaged. Cuttlefishes too are common, especially small ones. Squids and large cuttlefishes, however, appear to be only seasonally common. What are cephalopods?

35. Cephalopod Printouts - EnchantedLearning.com Cephalopod Printouts. cephalopods are a class of mollusks that includes the octopus, squid, cuttlefish, and nautilus. http://www.enchantedlearning.com/subjects/invertebrates/mollusk/cephalopod/Cepha

Advertisement. EnchantedLearning.com is a user-supported site. As a bonus, site members have access to a banner-ad-free version of the site, with print-friendly pages. Click here to learn more. Become a member of Enchanted Learning. Site subscriptions last 12 months. Click here for more information on site membership. As low as $20.00/year (directly by Credit Card Site members have access to the entire website with print-friendly pages and no ads. (Already a member? Click here. EnchantedLearning.com Animal Printouts Go to Online Animal Coloring Pages A B C D ... Animal Report Graphic Organizers Click on an animal to go to that printout. For the top 25 printouts, click here Cephalopods Cephalopods are a class of fast-swimming mollusk . Some have a hard external shell, but most do not. Cephalopods are marine predators; these carnivores eat fish, worms, crustaceans, and other mollusks. Some cephalopods include the octopus, squid, cuttlefish, nautilus, and ammonite (and other extinct animals). There are about 650 living cephalopods and over 7,500 known extinct cephalopods. Cephalopod means "head-foot." The foot of the cephalopod is a cluster of tentacles that connects directly to the head. The brain, the eyes, and the other sensory organs are well-developed. Cephalopods breathe using gills. They swim by jet-propulsion; they rapidly expel water from the mantle cavity through a specialized, tube-like organ called the hyponome. Many can also eject a cloud of ink to confuse enemies.

36. Cephalopods cephalopods. Phylum Mollusca Class Cephalopoda (headfoot) Because of the many movies in which cephalopods, especially octopi and squids, attack people, boats, etc., there is http://www.cyhaus.com/marine/cephalopod.htm

Cephalopods Phylum Mollusca Class Cephalopoda (head-foot) Because of the many movies in which cephalopods, especially octopi and squids, attack people, boats, etc., there is a misconception that they are aggressive and dumb creatures. In fact, there are only two species of octopi that are aggressive (they are located in Austrailia), and they are highly intelligent. They are probably the most intelligent of all the invertebrates. There are four types of cephalopods: Octopi they have eight symmetric arms (tenticles) which are used for their protection and for obtaining food. They have an interesting mating ritual: The males and females do not mate with any other partners besides the chosen one. Shortly after the female has her children, she dies, but the male stays with herhe does not mate again. This example is one of the only monogamous relationship that exists among animals. The octopus also has the most advanced sensory systems of any other invertebrate. Squids have ten polymorphic armstwo special arms that an octopus doesn not have. They use Rajiform (after Raja=skate) swimming motions in which they undulate their lateral fins like a skate or ray does. They also have something called jet propulsion. This is caused by the squid taking water into its mantle cavaties and then expelling it at high speeds through a nozzle like siphon in the opposite direction that the squid wants to move. The siphon can be aimed in any direction for course corrections and maneuvering purposes. The squid uses its tenticles for food and for protection. The myth of the Giant Squid is in fact true. It is a very shy creature and is usually only seen if it dies and washes up on shore.

37. TONMO.com - The Octopus News Magazine Online Online community and news magazine about octopus, squid, and other cephalopods. http://www.tonmo.com/

38. PHYS 0106 (Historical Geology) - Fossils (Cephalopods) The interior of a nautiloid shell is divided into chambers. The animal's soft parts are housed in the last, largest chamber. cephalopods cephalopods are members of the Phylum http://www.physci.wsc.ma.edu/young/hgeol/geoinfo/hgeolfossils/cephalopods.htm

The interior of a nautiloid shell is divided into chambers. The animal's soft parts are housed in the last, largest chamber. Cephalopods Cephalopods are members of the Phylum Mollusca , which also includes the bivalves and gastropods, and is probably the most successful group of marine invertebrates today. All molluscs are unsegmented, soft-bodied animals, and most have a shell or shells. The cephalopods are marine animals with well-developed eyes and nervous system and tentacles. They are generally swimming predators, and a few species are still found in the modern world. The earliest cephalopods with a fossil record are the nautiloids , creatures that produced beautiful chambered shells (see sketch at the left), whose descendants include the surviving nautilus. The ammonoids were the most abundant cephalopod group during the Mesozoic. The belemnites were an unusual Mesozoic cephalopod whose fossilized remains generally consist of "cigar-shaped" calcite rods. A modern nautilus - the soft parts emerge from the shell; note the eye and tentacles. Nautiloids Nautiloids are cephalopod molluscs (marine animals with well-developed eyes and nervous system and tentacles) whose soft parts are housed in a straight or coiled shell which has straight or gently curved septa (see illustration above) separating the chambers. They were

39. Rhombozoa - Wikipedia, The Free Encyclopedia Encyclopedia article on these tiny parasites that live in the renal appendages of cephalopods including their anatomy and life cycle. http://en.wikipedia.org/wiki/Rhombozoa

Rhombozoa From Wikipedia, the free encyclopedia Jump to: navigation search Rhombozoa/Dicyemida Scientific classification Kingdom: Animalia (unranked): Mesozoa Phylum: Rhombozoa A. Krohn Families Conocyemidae Dicyemdiae Kantharellidae Rhombozoa , or Dicyemida , is a phylum of tiny parasites that live in the renal appendages of cephalopods . Although the name "Dicyemida" precedes "Rhombozoa" in usage, and is preferred by most contemporary authors, "Rhombozoa" still enjoys much popular support. Classification is controversial. Traditionally, dicyemids have been grouped with the Orthonectida in the Mesozoa ; however, molecular phylogenies indicate that dicyemids may be more closely related to the roundworms The phylum is not divided in classes, but contains three families, Conocyemidae Dicyemidae , and Kantharellidae edit Anatomy Adult dicyemids range in length from 0.5 to 7 millimetres (0.020 to 0.28 in), and they can be easily viewed through a light microscope. They display eutely , a condition in which each adult individual of a given species has the same number of cells, making cell number a useful identifying character. The organism's structure is simple: a single axial cell is surrounded by a jacket of twenty to thirty ciliated cells. The anterior region of the organism is termed a

40. Cephalopods - Marine Mollusks Facts & Trivia cephalopods Marine Mollusks - Food Reference Food Trivia, Facts, History, Recipes, Quotes, Food Art, Cooking Schools http://www.foodreference.com/html/f-cephalopods.html

FoodReference.com An eclectic collection of information and facts about various foods and beverages around the world Home Cooking Tips Recipes Quotes ... Cayenne Peppers Cephalopods Celeriac Celery Celery Seeds Cellophane ... Ceriman Buy Posters at AllPosters.com CEPHALOPODS Cephalopods, marine mollusks - octopus, cuttlefish and squid , are among the largest, strongest, fastest, most cunning, and ferocious of all animals, but many of them are quite harmless. The Greeks hurl them against rocks and the Portuguese beat them with bottles to tenderize them before they are cooked. When properly prepared they are as delicate and tender as chicken. Home Trivia Quizzes Contests Culinary History Articles ... Link Directory Please feel free to link to any pages of FoodReference.com from your website. For permission to use any of the content on this website please E-mail: james@foodreference.com www.FoodReference.com You may copy and use portions of this website for non-commercial, personal use only. Any other use of the materials on this website without prior written permission is prohibited. Local Guides All States New York Los Angeles Chicago ... Louisville Buy Posters at AllPosters.com

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