Shark Tooth
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US $7.50
Saber-Toothed Cats
When one looks at the history of life, one often discovers that the similar forms develop again and again independently. This convergent evolution occurs because a good solution is a good solution, no matter how it arises. Thus for example, we find that sharks, Ichthyosaurs and dolphins are all have similar shapes - even though they evolved independently - because they are hydrodynamic shapes that allow them to easily move through water. Likewise, we can find several cat-like animals with saber-teeth, as these seems to be a good solution for hunting prey.
The best known saber-toothed cat is Smilodon, the so-called "saber-toothed tiger". It evolved in North America about 2.5 million years ago, and eventually spread to South America when the isthmus of Panama joined these two continents. Smilodon was a large and powerful animal that hunted large prey, but it died out about 10,000 years ago when its prey when into decline.
Thylacosmilus was a cat-like marsupial, again with long canine saber-teeth. It lived between 20 million and 5 million years ago, and was thinner in build than Smilodon. You can recognize Thylacosmilus by the bony flanges on its lower jaw which acted as scabbards protecting its canine saber-teeth. It is important to realize that Thylacosmilus, was not closely related to any of the cats, or even any of the Carnivora - it developed its cat-like form, as well as its saber-teeth, entirely independently.
Machairodus was another a saber-toothed animal. It lived in much of the northern hemisphere, between about 13 million and 2 million years ago. It was not particularly closely related to Smilodon, although it was in the same Family. Machairodus' saber-teeth had a unique serrated edge.
By S. Tanna. Discover more about prehistoric animals at http://www.dinosaurjungle.com/prehistoric_animals.php
About the Author
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Shark Tooth Cliff $24.99 David Fokos Shark Tooth Cliff - Art Print |
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Shark Tooth Necklace Set/12 $3.99 Your shark party guests will love this Shark Tooth Necklace as a birthday party favor! The rubber shark tooth replica comes with a 28" black cord necklace. |
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A Display of Shark Tooth Jewelry $39.99 Clarita Berger A Display of Shark Tooth Jewelry - Photographic Print |
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Shark Tooth Necklace $170 Get up close and personal with this shark tooth necklace. Made from a real shark tooth, this pendant is utterly divine. The smooth texture of the tooth complements the bright shine from the 24k gold vermeil of the rest of the pendant and the chain. |
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Tooth from Great White Shark $19.99 Walter Geiersperger Tooth from Great White Shark - Photographic Print |
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Shark Tooth Double Ring $88 You won't find a piece like the shark tooth double ring just anywhere. This extraordinary ring is all about contemporarystyle. The novel design shows off some shark tooth shapes in anunconventional but impressive manner. One side of the ring is a size |
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Silver Shark Tooth Necklace $88 Get the dangerous look without having to deal with the actual dangerwhen you wear this silver shark tooth necklace. Thecable chain does a great job of showing of the pendant. This necklacefastens with a sterling silver twist screw closure. |
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Shark Tooth Tale $12.32 When the owner of Treasures of Time agrees to hold a fossilized shark`s tooth for him for one week, Freddy must think of a way to earn the fifty dollar price. |
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Vanessa Mooney Shark Tooth Ghetto Chain Necklace $87.5 Oxidized pewter shark tooth on etched steel chain Made in USA |
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Shark Tooth Tale (Unabridged) $2.42 Get to know Freddy Thresher, the first-grade shark expert with an uncanny knack for mischief.... |
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Fossil Shark's Tooth Adjustable Ring $200 Tap into your adventurous side with this fossil shark's tooth adjustable ring. Dare to be different with this style and maybe set some fashion trends in your social circle and beyond. You're a bona fide fashionista and everyone should know it. |
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Word World Shark's Loose Tooth $8.14 Rated: NASynopsis: Welcome to WordWorld, where words are the stars of the show! Shark's Loose Tooth DVD includes these stories: Shark's First Loose Tooth: When Shark loses his first tooth at a sleepover party, he's got to get to sleep fast so the tooth fairy can come. There's just one problem- he can't fall asleep! Shark discovers the word he needs to help him fall asleep with the help of letter P. A String's the Thing!: After Duck accidentally turns on Frog's new cake frosting machine, the WordFriends must find the right -ING word to stop it from covering WordWorld in frosting! Duck Plays Piano: When Bug, Bee and Fly keep interrupting Duck's piano lesson, Duck learns that some things are worth waiting for hoops. Hurray! Shark's First Day of School: It's the first day of school for the youngest WordFriend, but Shark is afraid to go. With the help of hi good buddy Duck and teacher Cat, Shark's fear turns to confidence, and by day's end he's at the head of the class! |
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Shark Tooth Necklace - designed by Vanessa Mooney $58 This long necklace features a silver shark tooth hanging from a silver link chain. Made in the USA. |
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Hammer Head Shark Tooth Barrel .688 A5 $59 The Hammer Head Shark Tooth is a shortie, rifled, gun drilled barrel. It can be used in both woods and scenario. Great for close combat situations. |
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WordWorld: Shark`s Loose Tooth (DVD) $19.96 In SHARK`S FIRST LOOSE TOOTH, Shark enlists the help of the letter "P" to help him fall asleep so that the tooth fairy can come and collect his lost tooth, while A STRING IS THE THING! follows the WordFriends as they search for the right "ing" word to stop Frog`s cake frosting machine from covering the entire WordWorld in frosting. DUCK PLAYS THE PIANO follows Bug, Bee and Fly as they continuously interrupt poor Duck`s piano lesson, and Shark is apprehensive about going to school in SHARK`S FIRST DAY OF SCHOOL. |
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Heather Gardner Bold Collection Petite Shark Tooth Necklace $143 Natural shark tooth, each one has unique shape 18 inch chain Shark tooth size: 3/4 to 1 inch 18k gold wrapped Made in United States |
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Heather Gardner Bold Collection Golden Sunset Shark Tooth Necklace $220 Natural shark tooth, each one has unique shape 36 inch chain Shark tooth size 1 1/2 to 2 inch 18k gold wrapped Made in United States |
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Heather Gardner Bold Collection Gunmetal Shark Tooth Necklace $220 Natural shark tooth, each one has unique shape 36 inch oxidized brass chain Shark tooth size 1 1/2 to 2 inch Gunmetal silver wrapped Made in United States |
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Detailed Shark Tooth Pendant in 14k Gold $249 14kt yellow gold shiny and textured shark's tooth pendant. (205GD11P) 249 Weighs approx 2.2 grams Measures 1 1/4" x 3/4" Chain sold separately, see below Comes in a nice gift box |
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LK Designs Summer Breeze Shiny Silver Colored Shark Tooth Necklace $86.01 Shiny silver finish with hanging shark tooth and white crystal elements Adjustable length Made in Israel |
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Scrimshaw Carving on a Great White Shark Tooth (Carcharodon Carcharias) $24.99 David Fleetham Scrimshaw Carving on a Great White Shark Tooth (Carcharodon Carcharias) - Photographic Print |
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Renee Garvey Labradorite, Prehistoric Shark Tooth and Emerald Necklace $242 Faceted labradorite knotted with chocolate silk has side closure of aquamarine gemstone A prehistoric shark tooth and natural raw emerald hang from 14k gold wire Chocolate brown deerskin back is finished with emerald silk stitches Shark tooth and emerald vary slightly in size and shape Hand made in the United States |
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The Shivery Shark (Hardcover) $54.61 Marco the shark is scared to go to the dentist, but his tooth will not stop hurting. |
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Megalodon Tooth Shark Cap by CafePress $17 Our adjustable, 100% brushed cotton Cap is unstructured and an ideal way to beat the heat. Wear it anytime you want to keep the sun off or cover up a bad hair day. It features a sturdy low profile brim, sweatband, and adjustable closure, as well as Pre Shark Cap . Our adjustable, 100% brushed cotton Cap is unstructured and an ideal way to beat the heat. Wear it anytime you want to keep the sun off or cover up a bad hair day. It features a sturdy low profile brim, sweatband, and adjustable closure, as well as Pre |
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Shark Necklace $300 The shark necklace is perilously cool. Multiple vintage chains are gold plated and strung on a wide leather strap. A real shark tooth is the necklace's main attraction, pushing you right in the deep end of fashion. |
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Tooth $4.99 Tooth |
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Renee Garvey Sea Pearls Bronze Pearls, Prehistoric Shark Tooth Necklace $255 Tiny akoya salt water pearls are connected with two sections of dark brown deerskin to make up this 37" necklace A raspberry rhodolite button fastens through a slit in one of the deerskin tabs and both are hand-stitched with scarlet silk A prehistoric shark tooth connects to the pearls with knotted deerskin Each shark tooth varies This length allows for wearing this piece long, as a double wrap necklace or a multi-wrap bracelet Made in United States |
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Shark $899.99 Shark |
