Dinosaur Series: Tyrannosaurus

The Tyrannosaurus (Tyrannosaurus rex) is a large, bipedal, carnivorous theropod dinosaur in the Tyrannosauridae family. Its name means king of tyrants. It is commonly known as Tyrannosaurus Rex or T-Rex. 

It lived about 68-66 million years ago in the Upper Cretaceous period.

The Tyrannosaurus had a large head and long, heavy tail. It had powerful hind (back) legs and very small front legs. It is bipedal, which means that is walks on two legs. Its back legs had two clawed digits. Its teeth were long, curved, and crenelated (notched).

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Alaskan Wolf

The Alaskan Wolf (Canis lupus pambasileus) is a mammal and subspecies of the Grey Wolf in the Canidae family of dogs, wolves, and jackals. It is a canid or canine mammal. It is also known as the Yukon Wolf.

The Alaskan Wolf is dog-like with thick tawny grey or rusty-tan fur with a mixture of black hair. It has a triangular-shaped face with a wide forehead and medium-sized ears and brown eyes.

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Sandbar Shark

The Sandbar Shark (Carcharhinus plumbeus) is a marine (saltwater) fish in the Carcharhinidae family of requiem sharks. It is an elasmobranch cartilaginous fish — a fish that does not have a bony skeleton. It is also known as the Thickskin Shark or the Brown Shark. It is related to the Bull Shark.

The Sandbar Shark has a bluish-grey or brownish-grey streamlined body, with a very high, triangular dorsal (back) fin and long pectoral fins. It has a white underbelly. It has a broad, rounded snout and large, round eyes. The upper and lower jaws each have 13 or 14 triangular-shaped teeth.

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Steppe Wolf

The Steppe Wolf (Canis lupus campestris) is a subspecies of the Grey Wolf. It is a canid or canine mammal. It is also known as the Caspian Sea Wolf. 

The Steppe Wolf is dog-like with thick light-grey fur, and a rusty-red-grey or brownish back with a mixture of black hair. It has a triangular-shaped face with a wide forehead and medium-sized ears and brown eyes. Its tail does not have much fur. 

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Iberian Wolf

The Iberian Wolf (Canis lupus signatus) is a subspecies of the Grey Wolf, a canid or canine mammal in the Canidae family. It is also known as the Spanish Wolf. 

The Iberian Wolf is dog-like with thick, grey fur and a white stroke on its cheek that joins its white throat. It has white marks on its upper lips. It has a triangular-shaped face with a wide forehead, medium-sized ears, and dark orange-brown eyes. It has a reddish snout (nose). Its tail is long with dark markings. It also has dark markings on its front legs (signatus means ‘marked’). It has orange-brown eyes.

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Crimean Snail

The Crimean Snail (Helix taurica) is a spiral-shaped invertebrate gastropod mollusc. An invertebrate does not have a backbone and gastropod means stomach-footed. It is also called the Roman Snail, the Edible Snail, or the Vineyard Snail. 

The Crimean Snail has a thick, spherical shell with a distinct apex. The shell has a white background with dark-brown to reddish-brown, irregular, vertical bands.

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East African Nile Crocodile

The East African Nile Crocodile (Crocodylus niloticus afrocanus) is the largest freshwater predator in Africa, and the second largest reptile in the world, second to the Saltwater Crocodile (Crocodylus porosus). It is a crocodilian.

The East African Nile Crocodile is dark brown with faded blackish spots and stripes across its back, with a dirty-yellow belly. The colour darkens with age. It has four short legs, a long powerful tail, and a long snout with sharp teeth. They have thick scaly skin.

It has green eyes. Its nostrils, eyes and ears are on the top of the head, so that they can be seen out of the water when the rest of the body is underwater.

The East African Nile Crocodile has 64-68 sharp, pointy, cone-shaped teeth. It it loses a tooth, it can be replaced. On each side of the mouth, there are five teeth in the front of the upper jaw (premaxilla), 13 or 14 in the rest of the upper jaw (maxilla), and 14 or 15 on either side of the lower jaw (mandible).

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