Paleozoic
The largest known arthropods known to have ever existed, eurypterids, also referred to as sea "these," would have been a common sighting in the Ordovician seas before becoming predominantly terrestrial later in the Paleozoic.
What are scorpions
In this century, Henri Marie Ducrotay de Blainville was the first person to coin the term "paleontology" to describe the study of ancient life.
What is the 19th century, or the 1800s
Named after its characteristic many coal deposits, this geologic time period lasting from 358.9-298.9 MYA is known for having unusually large land invertebrates as a result of the high oxygen concentration in the atmosphere.
What is the Carboniferous
Often confused for a dinosaur, this non-dinosaur reptile named after its fingers lived during the late Jurassic in what is now Europe and Africa.
What is Pterodactyl or Pterodactylus
The Bone Wars was an intense competition-turned-rivalry between these two paleontologists, involving bribery, theft, and the destruction of bones.
Who are Marsh and Cope
Hill House would have been much quieter during the Cambrian and Ordovician periods because the oxygen levels in the atmosphere would have been too low for this phenomenon to occur.
What is fire
The Pokemon Anorith is based on this Cambrian radiodont.
What is Anomalocaris
There are 2 main types of fossils: body fossils, which contain an animal's preserved remains (e.g. bones or feathers), and this kind of fossil, which shows the animal's interactions with its environment (e.g. footprints or burrows).
What is a trace fossil
DAILY DOUBLE
What is Pangea
During the Cambrian and Ordovician, animals on Earth inhabited only the oceans, but during the Silurian, this type of animal was likely the first to become terrestrial.
What is an arthropod (also accepted: millipede)
DAILY DOUBLE
What is ginkgo
Although the Pleistocene is often referred to as the Ice Age, there were actually this many glacial cycles, or "ice ages" during the Pleistocene, which were separated by interglacial periods of relatively warm climate lasting tens of thousands of years.
What is 5
Paleontologists rely on this practice, the science of deciphering the sedimentary record by comparing rock layers, to estimate the age of fossils, especially in relation to other fossils in a given rock sequence.
What is stratigraphy
The extinction event that occurred after this geological period is known as the Great Dying because it was Earth's most severe known extinction event, killing upwards of 90% of taxonomic species.
What is the Permian
The massive barrel-shaped body of this caseid pelycosaur from the early Permian made it well suited to consume large amounts of low-nutrient plants.
What is Cotylorhynchus
Despite being named after a cute and wholesome Disney character, this genus of dinosaurs were actually fierce predators.
What are Bambiraptors
The woman thought to be the subject of the tongue twister 'she sells seashells by the sea shore,' Mary Anning, was also an early paleontologist credited with discovering the first two fossils of this marine reptile, among many other things.
What is a plesiosaur
Only one dinosaur fossil, which belonged to the ceratopsian Psittacosaurus, has ever been discovered in which this "versatile" body part is preserved.
What is a cloaca