The Compsognathus (Compsognathus longipes) is a small, bipedal, carnivorous, theropod dinosaur in the Compsognathidae family. Compsognathus means dainty jaw. Bipedal means that it walks on two legs.
A skeleton was discovered in 1859 in Germany, and also in the south of France.
It lived about 150 million years ago in the Tithonian age of the Late Jurassic period.
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What is a mandible and a maxilla?
The lower jaw of the mouth is called the mandible.
The upper jaw of the mouth is called the maxilla.
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The Cardinalfish (Apogon imberbis) is a marine (saltwater) fish in the Apogonidae family. It is also known as the Mediterranean Cardinalfish or the King of the Mullets.
The Cardinalfish has a compressed body with a large head and a large mouth. Its lower jaw protrudes over its upper jaw. It is reddish-pink with a round black eye. It has two or three dark spots on the base of its caudal fin.
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The Stag Beetle (Lucanus cervus) is an insect in the Lucanidae family.
The male and female Stag Beetle look different. The male has large mandibles (jaws) that look like the horns of a stag (male deer), whereas the female has much smaller jaws.
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The Springtail (Microfalcula delamarei) is a micro-small, wingless hexapod. A hexapod has three pairs of legs (6 legs), but it is not an insect.
It is entognathous, which means that is has internal mouthparts in a gnathal (jaw) pouch. It is in the Collembola class and the Entomobryoidea super-family – like a terrestrial crustacean, because scientists think that it evolved from marine (saltwater) shrimp, crabs, and lobsters. Scientists first thought that it was an insect, but they have now changed the category to an entognathous animal.
The Springtail has three parts: the head capsule, a thorax (with three segments and 6 legs), and an abdomen (with five segments). Therefore, it looks like an insect. It has small antennae, two eyes, and mouthparts. The mouthparts have a pair of jaws. The two eyes are called composed eyes, because they are composed of 8 single eyes. It does not have a throat, so it breathes through a porous cuticle.
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The Spotted Hyena (Crocuta crocuta) is a scavenging carnivorous African mammal. It has one of the strongest bite strengths of any mammal due to its strong jaws.
A dog, for example, such as a Mastiff or Rottweiler, has an average bite strength of 325 pounds per square inch. An African Lion has a bite strength of 650 pounds per square inch. A Bengal Tiger has a bite strength of 1,050 pounds per square inch. The Spotted Hyena has a bite strength of 1,100 pounds per square inch.
A Great White Shark has an average bite strength of 625 pounds per square inch. A Hippopotamus has an average bite strength of 1,825 pounds per square inch. The animal with the strongest bite strength is the crocodile at 3,700 pounds per square inch.
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