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Topic: Belemnite


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In the News (Wed 15 Feb 12)

  
  Walking with Dinosaurs - Fact Files
Belemnites were common from the Lower Jurassic period to the end of the Cretaceous period and became extinct at the same time as the dinosaurs - approximately 65 million years ago.
The cuttlefish is the modern-day relative of the belemnite.
Belemnites were efficient carnivores that caught small fish and marine animals with their tentacles, and ate them with their beak-like jaws.
www.abc.net.au /dinosaurs/fact_files/sea/sealife/belemnite.htm   (136 words)

  
  Belemnite Encyclopedia Information @ GreatArtworks.com (Great Artworks)   (Site not responding. Last check: )
Belemnites were numerous during the Jurassic and Cretaceous periods, and their fossils are abundant in Mesozoic marine rocks, often accompanying their cousins the ammonites.
While belemnite phragmocones are homologous with the shells of other cephalopods and are similarly composed of aragonite, belemnite guards are evolutionarily novel and are composed of calcite, thus tending to preserve well.
Belemnites were efficient carnivores that caught small fish and other marine animals with their arms and ate them with their beak-like jaws.
www.greatartworks.com /encyclopedia/Belemnite   (909 words)

  
 Delaware Geological Survey
Belemnite is the common name applied to an extinct order (Belemnoida) of mollusks belonging to the cephalopod class.
Belemnites have been found abundantly in the exposures of the Mount Laurel Formation along the banks of the Chesapeake and Delaware Canal in Delaware, east of St. Georges.
Sometimes, almost complete belemnite guards can be found, similar in size and shape to a pencil, pointed at one end, but flaring at the other end (if preserved) and partly hollow in the center where the chambered shell was located.
www.udel.edu /dgs/Education/stfossil.html   (393 words)

  
 Belemnites: A Quick Look
In fact, the closest living relatives to the belemnites are probably the cuttlefish and the strange little squid Spirula, both of which have a chambered internal shell structurally similar to that of the belemnite though in both cases highly modified in their own ways.
The early evolution of the belemnites is poorly understood, it appears that group may have derived from an earlier group known as the Aulacocerida which thrived from the Devonian to the early Jurassic.
The belemnite was probably an active hunter; the presence of hooks on the arms implies that the arms were designed to prevent prey from struggling free.
www.tonmo.com /science/public/belemnites.php   (2632 words)

  
 Belemnites
Belemnites were marine animals that belonged to the classification of Phylum Mollusca and to the Class Cephalopoda.
Belemnites were believed to be efficient carnivores that caught small fish and marine animals with their tentacles, and then ate them with their beak-like jaws.
In most Belemnite fossils, the guard is made from fibrous calcite, which grows inwards towards the center, very similar to the formation of the 'beef' in the Shales with Beef bed.
easyweb.easynet.co.uk /~gcaselton/fossil/belemnite.html   (1940 words)

  
 Belemnite Marl
The Belemnite Marls (averaging 23m), are a series of bluish-gray marls that are a lot paler than the Black Ven Marls that they rest upon.
At the top of this division is the Belemnite Stone (Bed 121), which is a 0.15m thick laterally persisting limestone, that forms a reef at St. Gabriels Water, that is revealed at low tide.
The regularity of the couplets in segments of the sequence, combined with a regular amplitude modulation, indicates an origin that is related to the orbital-precession cycle (i.e., one of the Milankovitch parameters).
www.g6csy.net /fossil/bm.html   (656 words)

  
 Belemnites
Jurassic Russian Belemnite These are the biggest Blemnites we have ever offered!
A belemnite is the inner shell of a straight shelled cephalopoda.
New Jersey Belemnites These Blemnites were collected at the Big Brook site of New Jersey and are late Cretaceous in age.
www.curiogrove.com /belemnites   (93 words)

  
 Definition of belemnite - Merriam-Webster Online Dictionary
New Latin belemnites, from Greek belemnon dart; akin to Greek ballein to throw — more at devil
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www.m-w.com /cgi-bin/dictionary?book=Dictionary&va=belemnite   (65 words)

  
 Belemnites
Like Ammonites, the Belemnite is also from the Cephalopod family, which includes, Squid and Octopus.
Collection of Belemnite guard’s - 10cm to 4cm
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home2.btconnect.com /fossilgallery/html/belemnites.html   (76 words)

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