As we started talking about a few weeks ago, my friend
Masaki Kleinkopf and I were able to visit the
Denver Gem and Mineral Show at the Denver Merchandise Mart.
Last time, we talked about the giant ammonites, the baby eryops that Dr. Robert Bakker was working on, the gliding Indonesian lizards of the genus Draco and the pterosaurs that evolved from creatures purportedly much like this millions of years ago. Today, we are going to talk about all of the
piscivorous animals that we saw there, except for the
fossil penguin that I saw there. Knowing me, that would easily take up one whole post of its own there. Keep in mind throughout this post that I'm not certain for all of these animals that they actually eat fish, I just know that the large groups that they belong to often eat
fish. Today, we are going to be looking at the
mosasaurs,
crocodilians,
pterosaurs, sea lions, other fish,
sharks, and the dreaded piscivorous
dinosaur Spinosaurus.
MESSAGE FROM ZACK FROM THE FUTURE: Hello, everyone. This is Zack Neher. I have travelled to this post from the future. I wanted to give you a link to the Homebase for these posts. I am like Rose Tyler, leaving clues in the form of Bad Wolf. Except this is not quite like that at all really. Anyways. The
Homebase for the series is
HERE.
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Myself next to a gigantic mosasaur skull |
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I am pretty sure that this is the skull of a mosasaur , anyway.....it looks more like a mosasaur skull than the skull of a crocodilian, if you ask me |
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A mosasaur skull (Platecarpus, if memory serves, but it is entirely possible that I am wildly off) in front of a fossil ray |
We also got to see the
teeth of a piscivorous
pterosaur. The teeth of a piscivore are usually different from those of other carnivorous animals due to their conical shape. The teeth of the fish eaters, like those of
crocodilians and
dolphins, are usually conical in shape, to prevent prey from struggling out of their grasp.
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The skulls of these dudes seem like they should be out of a cartoon or something, they are so weird and comic looking! |
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Here are a pair of photos of fossilized sea lion teeth, both from the extinct sea lion
Imagotaria sp., from the
Miocene to
Pliocene in the Atacama region of
Chile.
Next, a picture of a pair of fossil jellyfish!
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Fossil jellyfish! |
Next are the teeth of the gigantic, fifty to sixty foot long carnivorous (or actually, piscivorous) dinosaur:
Spinosaurus. Also in the picture are the teeth of another enormous carnivorous dinosaur that lived in the same area of Northern
Africa as
Spinosaurus at this time of the Cretaceous Period:
Carcharodontosaurus, who was not a piscivore, at least not primarily a piscivore, like a
penguin, or as
Spinosaurus is purported to
be. (Did you see that alliteration? My language arts teacher would be most impressed). I discuss both
Spinosaurus and
Carcharodontosaurus in two previous posts, which you can look at
HERE FOR SPINOSAURUS and
HERE FOR SPINOSAURUS AND CARCHARODONTOSAURUS.
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The teeth of Spinosaurus. Actually in this shot, it looks as if most or all of these teeth belong to Spinosaurus. |
And now for some pictures of the teeth of
Megalodon, the largest
shark that is ever known to have lived! I have talked about
Megalodon in the past, click
HERE to learn more.
Now for some random ones.
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It's a fish eat fish world out there |
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A pair of shark jaws. I am not certain as I don't remember at all and they are unlabeled, but I believe them to be jaws of sand tiger sharks. Again, I could be totally off on this! |
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