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Purchase includes free access to book updates online and a free trial membership in the publisher's book club where you can select from more than a million books without charge. Chapters: Chromatophore, Siphon, Mantle, Siphuncle, Umbilicus, Cuttlebone, Squid Giant Axon, Hectocotylus, Phragmocone, Septum, Aptychus, Ink Sac, Nidamental Gland, Orthocone, Camera, Cephalopod Arm, Dactylus, Body Chamber. Excerpt:A pair of fossil aptychi. The picture is 1 cm across. One of what would have been a pair of aptychi, (at first given the name "Trigonellites latus" and described as a bivalve) from the Kimmeridge Clay Formation in England An aptychus is a type of marine fossil , a hard anatomical structure like a curved shelly plate, which was part of the body of an ammonite . Paired aptychi have, on rare occasions, been found at or within the aperture of ammonite shells. Aptychi are often found well-preserved as fossils , but are only very rarely found connected to ammonite shells. This circumstance led to them being initially classified as the valves of bivalves , which they somewhat resemble. Aptychi are found in rocks from the Devonian period through to the those of the Cretaceous period. The aptychus was usually composed of calcite , whereas the ammonite shell was aragonite . There are many forms of aptychus, varying in shape and in the sculpture of the inner and outer surfaces. However, because they are so rarely found in position within the ammonite shell, it is often unclear as to which species of ammonite many aptychi belong. When only a single plate is present, as is sometimes the case, the term "anaptycus" is used. Function Aptychi seem to have most often existed as bilaterally-symmetrical pairs, and were first described (incorrectly) as being the valves of bivalve mollusks . Aptychi are now considered to be either: or: Set close to or against the shell's terminal opening (the living chamber), the aptychi usually consisted of two identical but mirror image valves. ... ... Read more

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The mollusc shell or mollusk shell is typically a calcareous exoskeleton which encloses, supports and protects the soft parts of an animal in the phylum Mollusca. In everyday language, mollusc shells are often simply known as "shells", or in the case of marine species, "seashells". The ancestral mollusc is thought to have had a shell, but this has subsequently been lost or reduced on some families, such as the squid, octopus, and some smaller groups such as the caudofoveata and solenogastres, and the highly derived Xenoturbella. Malacology, the scientific study of molluscs as living organisms, has a branch devoted to the study of shells, and this is called conchology - although these terms used to be, and to a minor extent still are, used interchangeably, even by scientists (this is more common in Europe). Within some species of molluscs there is often a surprising degree of variation in the exact shape, pattern, ornamentation, and color of the shell. ... Read more

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Chapters: Sepiidae, Coleoidea, Sepiolidae, Bactroceras, Two-Toned Pygmy Squid, Seven-Arm Octopus, Wunderpus Photogenicus, Benthoctopus, Incirrina, Greater Blue-Ringed Octopus, Common Octopus, Octopodidae, Vampyromorphida, Atlantic Bobtail, Bellybutton Nautilus, Grimpoteuthis, Turquet's Octopus, Noury's Argonaut, Palau Nautilus, Pacific Argonaut, Umbrella Octopus, Atlantic Pygmy Octopus, Southern Pygmy Squid, Cephalopod Eye, Sepia Tuberculata, Argonauta Cornuta, Crusty Nautilus, Sepiolinae, Pohlsepia Mazonensis, Sepia Pulchra, Octopodiformes, Rossia Moelleri, Argonautoida, Sepia Novaehollandiae, Atlantic White-Spotted Octopus, Obinautilus, Palaeoctopus Newboldi, Rossia Pacifica Diegensis, Neorossia Leptodons, Butterfly Bobtail Squid, Nectoteuthis Pourtalesi, Tuberculate Pelagic Octopus, Idiosepius, Rossia Brachyura, Keuppia, Mysterious Bobtail, Austrorossia Enigmatica, Semirossia Patagonica, Sepia Bartletti, Warty Bobtail Squid, Big-Fin Bobtail Squid, Idiosepius Thailandicus, Sepia Chirotrema, Euprymna Stenodactyla, Allonautilus Perforatus, Sepia Irvingi, Sepia Plana, Golden Bobtail, Sepia Hieronis, Sepia Senta, Sepia Baxteri, Idiosepius Minimus, Rossiinae, Euprymna Albatrossae, Octopus Mercatoris, Rossia Mollicella, Proteroctopus Ribeti, Decapodiformes, Promachoteuthis Sulcus, Steenstrup's Bobtail, Sepia Carinata, Sepia Limata, Sepiola Pfefferi, Sepia Typica, Sepia Rhoda, Sepia Simoniana, Sepiola Knudseni, Sepia Sewelli, Sepia Koilados, Nototodarus Sloanii, Sepiella Mangkangunga, Sepia Bidhaia, Sepia Thurstoni, Sepia Tokioensis, Sepia Vercoi, Sepia Joubini, Sepia Reesi, Sepia Insignis, Sepia Plathyconchalis, Ink Sac, White-Patch Nautilus, Amphorateuthis Alveatus, Sepia Burnupi, Sepia Tenuipes, Sepia Bathyalis, Sepia Tala, Sepia Kiensis, Euprymna Hyllebergi, Vampyronassa Rhodanica, Belemnotheutis, Sepia Aureomaculata, Sepia Dubia, Sepia Elongata, Sepia Subtenuipes, Sepia Ivanovi, Sepia Peterseni, Sepiola Rossiaeformis, Sepia ...More: http://booksllc.net/?id=622208 ... Read more

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"Ammonites are extinct marine animals related to present day squid, octopi and chambered nautilus. They have been collected and prized for centuries, yet they often remain unidentified in many collections due to a lack of published information. Ammonites and the Other Cephalopods of the Pierre Seaway will change that. This work is written for general understanding and consolidates the latest cephalopod information available in technical journals. The book includes easily understood descriptions of over 90 species, 32 genera, and 13 families of cephalopods that lived for about 12 million years in the Pierre Seaway, which extended through the interior of North America connecting the Arctic Ocean with the Gulf of Mexico." ... Read more

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Chapters: Baltoceratidae, Acanthoteuthis, Brevicoceras, Titanoceras, Hoeloceras, Tusoteuthis, Jovellania, Hemichoanella, Knightoconus, Ostenoteuthidae, Winnipegoceras, Pseudactinoceras, Tylonautilus, Acanthonautilus, Valhallites, Endolobus, Kionoceras, Homaloceras, Tetragonoceras, Sholakoceras, Trigonoceras, Neocycloceras, Tetrapleuroceras, Streptoceras, Tienoceras, Hexagonites, Plectronoceras, Permoceras, Permonautilus, Choanoceratidae, Stearoceras, Shuranoceras, Triboloceras, Heminautilus, Octamerella, Franklinoceras, Strophiceras, Thoracoceras, Zittelloceras, Belemnella, Engorthoceratidae, Gonioteuthis, Hibolites, Homaloteuthis, Mojsisovicsteuthis, Parapassaloteuthis, Belemnopsis, Palaeobelemnopsis, Crassiatractites, Protoaulacoceras, Pseudodicoelites, Belemnellocamax, Breviatractites, Holcobelus, Paramegateuthis, Salpingoteuthis, Buelowiteuthis, Chitinoteuthis, Chondroteuthis, Conodicoelites, Curtohibolites, Dactyloteuthis, Metabelemnites, Pavloviteuthis, Praeoxyteuthis, Prographularia, Pseudohastites, Rhopaloteuthis, Sinobelemnites, Aulacoteuthis, Austroteuthis, Bayanoteuthis, Dictyoconites, Mesohibolites, Neobelemnella, Parahibolites, Patagonibelus, Simpsonibelus, Acrocoelites, Belemnocamax, Calliconites, Chalalabelus, Coeloteuthis, Neohibolites, Pachyduvalia, Parahastites, Permoteuthis, Quiricobelus, Tauriconites, Actinocamax, Belemnitina, Belospirula, Brachybelus, Conoteuthis, Dimitobelus, Fusiteuthis, Lagonibelus, Mesoteuthis, Peratobelus, Pleurobelus, Pseudobelus, Rhabdobelus, Sachsibelus, Schwegleria, Somalibelus, Youngibelus, Zugmontites, Gastrobelus, Brevibelus, Diplobelus, Nannobelus, Raphibelus, Tetrabelus, Vectibelus, Volgobelus, Arcobelus, Conobelus, Lenobelus, Aussites, Belemnoteuthis, Produvalia, Sinoceras, Ellinoceras, Askeatonolucidum, Greenlandoceras, Antigyroceras, Devonocheilus, Ophionautilus, Paraloxoceras, Brevococeratidae, Neptunoceras, Quebecoceras, Siberioceras, Tithonoceras, Ulrichoceras, West...More: http://booksllc.net/?id=24067265 ... Read more

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Volume: Pt. 2Publisher: [New Haven, Conn. : Connecticut Academy of SciencesPublication date: 1879Subjects: CephalopodaGiant squidsGiant squidsNotes: This is an OCR reprint. There may be numerous typos or missing text. There are no illustrations or indexes.When you buy the General Books edition of this book you get free trial access to Million-Books.com where you can select from more than a million books for free. You can also preview the book there. ... Read more

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This scarce antiquarian book is a selection from Kessinger Publishings Legacy Reprint Series. Due to its age, it may contain imperfections such as marks, notations, marginalia and flawed pages. Because we believe this work is culturally important, we have made it available as part of our commitment to protecting, preserving, and promoting the worlds literature. Kessinger Publishing is the place to find hundreds of thousands of rare and hard-to-find books with something of interest for everyone! ... Read more

Product Description
This scarce antiquarian book is a selection from Kessinger Publishing's Legacy Reprint Series. Due to its age, it may contain imperfections such as marks, notations, marginalia and flawed pages. Because we believe this work is culturally important, we have made it available as part of our commitment to protecting, preserving, and promoting the world's literature. Kessinger Publishing is the place to find hundreds of thousands of rare and hard-to-find books with something of interest for everyone! ... Read more

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You've read books about fishermen terrorized by monsters on the highseas.But you never got the other side of the story.UNTIL NOW.Queen of the Cephalopods is a classic tale of survival with amonstrous twist as an endangered giant octopus fends off the attacksof a ruthless fisherman, who more than anything else is after onething: the thrill of the kill.

Bubbling over with adventure and simmering with suspense on the highseas, this intriguing story will keep you on the edge of your seat.So, batten down the hatches and get ready for a rousing ride.There'sstormy weather ahead! ... Read more

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This book examines the characteristics in cephalopods that raise their lifestyle and performance, despite their basic molluscan physiology and biochemical design, to levels similar to those found in vertebrates. It also studies the means by which these higher levels are achieved. ... Read more

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First biological study of the cephalop[ods of Hong Kong's marine waters, encompassing a 200 mile radius ... Read more