Prehistoric Animals

noun a prehistoric reptile that lived millions of years ago

• The paleontologist discovered a new species of dinosaur in the fossil record.
• My little cousin loves playing with his toy dinosaur figures.
• That movie was so old, it felt like watching dinosaurs on screen.
• Her outdated fashion sense makes her look like a dinosaur in modern times.

noun a type of extinct elephant-like mammal that was very large in size

adjective very large, huge, or gigantic

• The museum displayed a well-preserved mammoth skeleton found in Siberia.
• Did you see that huge mammoth statue at the park?
• That car is a mammoth, it takes up the whole parking space!
• The project's success was a mammoth achievement for the team.

adjective relating to or consisting of wool

adverb in a way that is soft and fluffy like wool

• The sheep's woolly coat kept it warm during the winter months.
• I love wearing my woolly sweater on chilly days.
• That hat looks so woolly, where did you get it?
• Her memory of the event was woolly, with details fading over time.

noun a smooth, rounded stone that is swallowed by some animals to aid in the digestion process

• Gastroliths are often found in the digestive systems of certain animals to help with grinding food.
• I heard that some birds swallow gastroliths to help them digest their food better.
• Dude, did you know some dinosaurs used gastroliths as stomach rocks?
• The weight of his worry felt like a gastrolith in his stomach, heavy and unyielding.

noun a person who creates visual representations of prehistoric life based on fossil evidence

• The paleoartist meticulously reconstructed the appearance of ancient creatures based on fossil evidence.
• I heard that paleoartist is working on a new project to illustrate prehistoric animals.
• That paleoartist is a real fossil wizard!
• The paleoartist breathed life into long-extinct species through their art.

noun a genre of art that depicts prehistoric life, often based on fossil evidence and scientific knowledge

• Paleoart is a form of artistic representation depicting prehistoric life.
• I love looking at paleoart because it shows what dinosaurs might have looked like.
• Check out this cool paleoart of a T-rex hunting its prey!
• His room was like a museum with all the paleoart on the walls.

noun a type of dinosaur characterized by a hip structure similar to that of modern reptiles

• The saurischian dinosaurs were characterized by their hip structure, with a forward-pointing pubis bone.
• Did you know that the saurischian dinosaurs were the ancestors of modern birds?
• Those saurischian dinos were the real OGs of the prehistoric world.
• Her leadership style was like that of a saurischian, strong and commanding.

noun a term coined by cartoonist Gary Larson in a 1982 Far Side comic strip to refer to the distinctive arrangement of four to ten spikes on the tails of stegosaurid dinosaurs

• The paleontologist pointed out the thagomizer on the fossilized stegosaurus tail.
• Check out the spikes on the end of that stegosaurus tail, also known as a thagomizer.
• The thagomizer on that dino's tail looks pretty gnarly.
• Her wit was like a thagomizer, sharp and piercing in its impact.

noun A genus of extinct snakes that lived during the Paleocene epoch, known for their massive size

• The Titanoboa is an extinct genus of very large snakes that lived during the Paleocene epoch.
• Did you know that the Titanoboa was a massive snake that lived millions of years ago?
• That Titanoboa was one big noodle!
• The Titanoboa's size was as intimidating as its name.

noun an extinct marine reptile of the Mesozoic era, resembling a dolphin with a long pointed snout and four flippers

adjective related to or resembling an ichthyosaurus

• The ichthyosaurus was a marine reptile that lived during the Mesozoic era.
• Have you seen the fossil of the ichthyosaurus at the museum?
• That ichthyosaurus is one cool sea dino!
• Her graceful swimming reminded me of an ichthyosaurus gliding through the water.

noun a type of reptile that is an ancestor of dinosaurs and other archosaurs

• The dinosauromorph fossil was carefully examined by the paleontologists.
• Did you see that cool dinosauromorph skeleton at the museum?
• Check out the sick dinosauromorph bones they dug up!
• His towering presence in the boardroom made him seem like a dinosauromorph among mere mortals.

noun a member of a group of herbivorous dinosaurs characterized by a pelvic structure resembling that of birds

adjective relating to or characteristic of ornithischians

• The ornithischian dinosaurs were characterized by a pelvic structure similar to that of modern birds.
• Did you know that ornithischian dinosaurs had a hip structure similar to birds?
• Those ornithischian dinos had hips like birds, pretty cool right?
• Her dance moves were as graceful as an ornithischian dinosaur's hip structure.

noun a type of herbivorous dinosaur that lived during the late Cretaceous period, characterized by a bony frill at the back of the skull and a beak-like mouth

• The ceratopsid dinosaurs were known for their distinctive frilled skulls and horns.
• Have you seen that cool ceratopsid dinosaur skeleton at the museum?
• That ceratopsid dino is totally rad!
• Her ceratopsid-like ability to detect danger saved her from a potential threat.

noun a type of extinct flying reptile from the Mesozoic era

• The pterosaur was a flying reptile that lived during the time of the dinosaurs.
• Did you know that pterosaurs were actually not dinosaurs, but flying reptiles?
• That pterosaur was one cool flying lizard!
• Her imagination soared like a pterosaur in flight.

noun a type of herbivorous dinosaur that lived during the Cretaceous Period

• The hadrosaur is a type of herbivorous dinosaur that lived during the Late Cretaceous period.
• Did you know that the hadrosaur was also known as the 'duck-billed dinosaur'?
• I heard that the hadrosaur was like the hipster of the dinosaur world with its unique duck-like bill.
• The hadrosaur roamed the earth millions of years ago, leaving behind a legacy of ancient mysteries.

noun a genus of theropod dinosaur that lived in North Africa during the Cretaceous period

• Deltadromeus is a genus of theropod dinosaur that lived during the Cretaceous period.
• Have you heard of Deltadromeus? It's this cool dinosaur from the Cretaceous period.
• Deltadromeus was one fierce dino back in the day!
• The competition felt like a pack of Deltadromeus closing in on me.

noun aurochs

• The aurochs was a large, extinct species of wild cattle that once roamed Europe.
• I read that the aurochs was like a huge, ancient cow.
• Those aurochs were the OG cows back in the day.
• The aurochs symbolizes the untamed power of nature.

noun A type of lobe-finned fish that includes the ancestors of land vertebrates

• The crossopterygian fish is known for its unique lobe fins.
• Have you ever heard of a crossopterygian fish? It's pretty cool.
• That crossopterygian fish is one funky-looking creature.
• Her ideas were like crossopterygian fossils, ancient yet still relevant.

noun a genus of flightless aquatic birds that lived during the Late Cretaceous period

• The hesperornis is an extinct aquatic bird that lived during the Late Cretaceous period.
• Have you heard of the hesperornis? It was like a prehistoric penguin!
• Dude, that hesperornis was one cool bird from back in the day.
• The hesperornis was a true pioneer of the ancient seas, navigating its way through unknown waters.

noun Acanthodea is a taxonomic group of extinct jawed fishes that lived from the Silurian to the Permian periods.

• The acanthodea is an extinct class of fish that lived during the Paleozoic era.
• I read that the acanthodea were some of the earliest jawed fish.
• Check out those cool acanthodea fossils at the museum!
• The acanthodea were like the pioneers of the fish world, paving the way for future species.

adjective relating to or characteristic of the Acanthodei, an extinct group of jawed fish from the Paleozoic era

• The acanthodean fossils found in this region date back to the Devonian period.
• I heard that the acanthodean fish were the first to develop jaws in prehistoric times.
• Check out these cool acanthodean skeletons at the museum!
• His sharp wit was like an acanthodean spine, always ready to defend his arguments.

noun Acanthodes is a noun referring to an extinct genus of jawed fish that lived during the Devonian period.

• Acanthodes is an extinct genus of primitive jawed fish that lived during the Silurian period.
• Did you know that acanthodes is considered one of the earliest jawed fish species?
• I heard that acanthodes was like the OG jawed fish back in the day.
• The acanthodes in the fossil record serve as a reminder of the ancient origins of jawed vertebrates.

noun a class of extinct jawed fishes that lived from the Silurian to the Permian period

• The acanthodian fish lived during the Silurian and Devonian periods.
• Have you heard of those acanthodian fish that lived millions of years ago?
• Those acanthodian fish were like the rockstars of the ancient seas.
• Her sharp wit was like the spines of an acanthodian fish, always ready to defend her arguments.

noun Acanthodii - a class of extinct jawed fishes known from the Silurian to the Permian periods, characterized by spiny fin rays

• The acanthodii are an extinct class of fish characterized by bony spines in their fins.
• Have you ever heard of the acanthodii fish? They had bony spines in their fins.
• Those acanthodii fish were like the punk rockers of the ancient seas with their spiky fins.
• Just like the acanthodii fish adapted to their environment, we too must adapt to survive in our ever-changing world.

noun Aceratherium is a genus of extinct rhinoceros that lived during the Miocene epoch.

• The aceratherium is an extinct genus of rhinoceros that lived during the Oligocene epoch.
• I heard that the aceratherium was a really big rhino-like animal from a long time ago.
• Check out that ancient aceratherium, it's like a prehistoric rhino!
• The aceratherium in the room that no one wants to talk about is our declining sales numbers.

noun a genus of extinct predatory fish that lived during the Eocene epoch

• The achaenodon was a prehistoric mammal that lived during the Eocene epoch.
• Have you heard of the achaenodon? It's a cool ancient animal.
• That achaenodon was one fierce creature back in the day.
• The achaenodon of the business world, the company's founder was a powerful force in the industry.

noun a genus of extinct primates that lived during the Eocene epoch

• Adapis is an extinct genus of primate that lived during the Eocene epoch.
• I read an interesting article about Adapis, a prehistoric primate.
• Check out this cool Adapis fossil I found online!
• The ancient Adapis is like a window into the past, showing us what primates were like millions of years ago.

noun aeto- is not a standalone word, but a prefix used in scientific terminology to indicate something related to eagles or birds of prey.

• The aeto- prefix is commonly used in scientific terminology to denote something related to eagles.
• I heard that new movie is all about aeto- creatures, like eagles and hawks.
• I can't believe how aeto- that guy is, always swooping in to steal the spotlight.
• Her leadership style is like an aeto-, always soaring above the rest with grace and power.

noun Aetosaurs are a group of heavily armored herbivorous archosaur reptiles that lived during the Triassic period.

• Aetosaurs were a group of heavily armored reptiles that lived during the Triassic period.
• Did you know aetosaurs were like the tanks of the prehistoric world?
• Those aetosaurs were basically walking tanks with scales.
• The aetosaurs were the knights in shining armor of the ancient reptile world.

noun Aetosaurus is a genus of extinct reptiles that lived during the Triassic period.

• The aetosaurus is a type of prehistoric reptile known for its distinctive armor-like plates.
• I heard that the aetosaurus was one of the toughest dinosaurs around.
• Check out that cool aetosaurus toy I got from the store!
• Her personality was like an aetosaurus - tough on the outside but gentle on the inside.

noun a genus of large herbivorous dinosaurs that lived during the Late Cretaceous period

• The agathaumas is a genus of dinosaur that lived during the Late Cretaceous period.
• Have you heard of the agathaumas dinosaur? It was huge!
• That agathaumas dino was a real beast back in the day.
• Her anger was like an agathaumas, fierce and unstoppable.