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Prehistoric Pencils 24

August 7, 2014
Struthiomimus

Struthiomimus

Today’s Prehistoric Beast is the ostrich-like, bipedal dinosaur, Struthiomimus. This animal was abundant during the late Cretaceous and is assumed to have been omnivorous, eating plant material and small mammals, lizards and invertebrates. It is speculated that this animal was capable of a 30 to 50 mph sprint, making its speed its prime defense against predators of the day.

Prehistoric Pencils 23

August 6, 2014
Koolasuchus

Koolasuchus

Today’s Prehistoric Beast is the enigmatic temnospondyl, Koolasuchus. This animal lived in a relatively cool climate in what was to become present day Australia and reached a supposed length of 16 ft and 1,100 lbs., filling the niche of the modern crocodile. This giant of the Cretaceous is somewhat mysterious because the rest of it’s kind, a precursor of sorts to advanced amphibians which were some of the earliest terrestrial tetrapods on earth, died out many millions of years earlier.

Prehistoric Pencils 22

August 3, 2014
Repenomamus

Repenomamus

Today’s Prehistoric Beast is the Repenomamus, which was the largest known Mesozoic mammal to date. This creature has disputed how paleontologists possibly view the role of mammals during the Cretaceous Period as not that of meek mouse sized prey that scurried through the shadows of the underbrush attempting to elude the hungry eyes of larger saurian predators, but that of a voracious 3 and a half foot badger-like dinosaur hunter. This mammal has even been found with the fossilized remains of young dinosaurs in its stomach cavity to prove it.

Prehistoric Pencils 21

August 2, 2014
Placerias

Placerias

Today’s Prehistoric Beast is the herbivorous dicynodont, Placerias which roamed the Earth in the upper Triassic. This two-tusked therapsid was one of the largest and most widespread of its day using it’s beak to shear through tough planter material of the era. Although completely unrelated this animal’s respective size and lifestyle are presumably much like that of a modern day Hippopotamus.

Prehistoric Pencils 20

July 31, 2014
Archaeopteryx

Archaeopteryx

Today’s Prehistoric Beast is the raven sized Archaeopteryx, an important late Jurassic transitional creature that helped to bridge the gap in understanding the relationship between modern birds and their avian ancestors, the dinosaurs. Archaeopteryx was discovered at a very crucial time in science and biology, it’s discovery being just two years after Darwin published On The Origin Of  Species. The Archaeopteryx’ transitional form containing teeth, tail, and grasping fingers as well as flight feathers helped to visually validate many of those evolutionary theories.

Prehistoric Pencils 19

July 29, 2014
Kosmoceras

Kosmoceras

Todays’s Prehistoric Beast is the marine invertebrate Kosmoceras, an extinct ammonite from the Middle Jurassic period.  There are over a 100 known species all of which exhibit slight variations in size and shell design. Although the entire line of ammonites are now extinct, they are related to the Nautilus, Octopus, and Squids of today. The shell of this one reminds me of a French Cruller donut, and you can’t go wrong there.

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