MOSASAURUS ( Dinosaur ) depicted on ancient urn ?

MOSASAURUS ( Dinosaur/sea creature/aquatic lizard ) depicted on ancient urn ?
So , how come there is a MOSASAURUS like creature depicted on an urn which is  approximately 2500 years old ?
Take a close look at the picture attached , an ancient urn from Caria , which was located in Asia Minor (Turkey). The artifact is dated from 530bc , that is 2500 years ago . We see on the urn pictures of several known sea creatures a seal , octopus and dolphin BUT more interestingly we see what appears to be a MOSASAURUS . The characteristics of this sea creature with the positioning of the jaws , big eye's , large teeth and flippers clearly match a MOSASAURUS skeleton very well.
If you take a look at artist drawings of a MOSASAURUS you will not fail to see the resemblance . http://www.google.co.uk/search?q=mosasaurus&hl=en&client=firefox-a&hs=lFD&sa=G&rls=org.mozilla%3Aen-GB%3Aofficial&channel=s&prmd=ivns&tbm=isch&tbo=u&source=univ&ei=VihtTvOtEcO3hAf6v5SDDA&ved=0CDoQsAQ&biw=1366&bih=580
(This artifact is described in Thomas H. Carpenter's 1991 book Art and Myth in Ancient Greece: A Handbook)
The question must be asked " how could artists decorating a 2500 year old urn know what a (Dinosaur/sea creature/aquatic lizard ) MOSASAURUS  looked like , when dinosaur skeletons have only begun to be assembled during the past two hundred years and we are told they died out over 60 million years ago ? ( hypothetical years . And are part of the evolutionary interpretation of the evidences that we all have ) COULD IT BE THAT DINO'S AND MAN ACTUALLY LIVED ALONGSIDE ONE ANOTHER , and very recently ?
Did these artists witness these creatures for themselves ?
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JUST WHAT DOES IT MEAN IF MAN AND DINOSAUR CO-EXISTED ?
Louis Jacobs , former president of the society of Vertebrate Paleontology ......
"Such an association (man and dinosaur) would dispel an Earth with vast antiquity . The entire history of creation , including the day of rest , could be accommodated in the seven biblical days of the ......Genesis myth . EVOLUTION WOULD BE VANQUISHED ."

Mr Jacobs does not hold to the biblical worldview , this is obvious by his calling the Genesis account myth , but he clearly understands that if man and dinosaurs co-existed then it is the final nail in the coffin for the Evolutionary Paradigm .
From the evidence that is available , which spans every tribe and nation globally , it is obvious that man and dinosaurs co-existed . The very book (Bible , Word of God ) he attempts to claim as myth contains eyewitness accounts of what are clearly known by us today as DINOSAURS .
A great book for anybody searching out evidence for the co existence of man and what we call today dinosuars then the following book by Bill Cooper is a great read . http://www.amazon.co.uk/After-flood-Post-flood-History-Europe/dp/187436740X/ref=sr_1_1?ie=UTF8&qid=1304513429&sr=8-1 Also Dragons and Dinosaurs by Darek Isaacs . http://www.amazon.co.uk/Dragons-Dinosaurs-Evolution-Darek-Isaacs/dp/088270477X/ref=sr_1_2?ie=UTF8&qid=1304513756&sr=1-2

 http://gen1rev22.blogspot.com/2011/11/chinese-lunar-year.html 

http://gen1rev22.blogspot.com/2011/09/sauropods-apatosaurus-dinosaur-depicted.html
http://gen1rev22.blogspot.com/2011/09/mosasaurus-dinosaur-depicted-on-ancient.html
http://gen1rev22.blogspot.com/2011/11/native-american-indians-witness-dinos.html
http://gen1rev22.blogspot.com/2011/09/if-my-memory-serves-me-well-dino.html
http://gen1rev22.blogspot.com/2011/10/younger-world-evidence-for-speed-at.html
http://gen1rev22.blogspot.com/2011/09/800-year-old-stegosaurus-so-how-come.html
http://gen1rev22.blogspot.com/2011/09/tanystropheus-dinosaur-depicted-on.html
http://gen1rev22.blogspot.com/2011/12/flying-winged-reptiles-serpentsaccount.html
http://gen1rev22.blogspot.com/2011/07/evidence-for-watery-catastrophe.html
http://gen1rev22.blogspot.com/2012/02/chinese-lunar-year-year-of-dragon.html