Cell to Singularity Wiki

The Archosaur is the 1st Dinosaur obtained in the Mesozoic Valley Bubble Universe, which can generate Fossil.

Archosaurs are a group of diapsid amniotes and are broadly classified as reptiles. The living representatives of this group consist of birds and crocodilians. This group also includes all extinct dinosaurs, pterosaurs, and extinct relatives of crocodilians. Archosauria, the archosaur clade, is a crown group that includes the most recent common ancestor of living birds and crocodilians and all of its descendants. It includes two main clades: Pseudosuchia, which includes crocodilians and their extinct relatives, and Avemetatarsalia, which includes birds and their extinct relatives (such as non-avian dinosaurs and pterosaurs).[1]

In-Game Description[]

"This clade includes the ancestors of dinosaurs, birds, and crocodiles. A clade represents a single branch on the tree of life."



  • Opisthopubic Pelvis (Speed):

"Some dinosaurs had a pubis bone that pointed down and backwards to support their abdomen, resulting in a four-pronged pelvic structure."

  • Propubic Pelvis (Payout):

"A three-pronged pelvic structure with a forward-pointing pubis."


  • Quadrupedal (Speed):

"A creature that walks on four legs, with a horizontal posture, is called a quadruped. Many dinosaurs were quadrupedal, including Stegosaurus and Triceratops. A quadrupedal gait gave these dinosaurs increased sturdiness and the ability to carry lots of weight."

  • Carnivore (Payout):

"Animals that feed entirely on meat, or the flesh of other animals, are called carnivores. About half of dinosaurs were carnivores. With teeth specially designed for ripping and tearing, some carnivours were hunters, while others were scavengers."

  • Triassic Age (Discount):

"The Triassic (251.9 MYA—201.3 MYA) was the first period of the Mesozoic Era. While the first half of this period was devastated by the Permian-Triassic Extinction Event, the second half is marked by increased diversity and the first appearances of dinosaurs."


  • Hollow Bones (Speed):

"The development of hollow or semi-hollow bones gave some dinosaurs a lighter but stronger skeleton system. This development would later enable them to evolve the ability to fly."

  • Herd Behavior (Payout):

"Some dinosaurs concregated in social groups, living in loose family units for defense against predators."

  • Feathers (Discount):

"It is still unknown to what extent therapodian dinosaurs were feathered, but evidence exists that shows that at least some of them presented with varying degrees of feathery skin coverings."

  • Warm Climate (Payout):

"During the Mesozoic Era, the Earth's temperature was very warm, which led to a great amount of geological and biological transitions. This climate set the stage for the major changes of the era."


  • Tell Me the Tooth (75 Archosaurs):

"One of the most important evolutionary advancements in the Archosaur family was the developement of teeth set in sockets. This made their teeth much sturdier and less likely to loosen or fall out while eating or in a fight."

  • A Tree Falls in a Forest (200 Archosaurs):

"Birds and crocodilians are the only surviving members of the Archosaurs. Scientists believe that deforestation may have meant that ground-dwelling therapods survived the Cretaceous-Paleogene extinction event while larger species died out."

Wikipedia's Info About Archosaurus[]

Archosaurus is an extinct genus of carnivorous archosauriform reptile. From the latest Permian of Russia and Poland, it is one of the earliest known archosauriforms. The type and only species is Archosaurus rossicus, known from several fragmentary specimens which cumulatively represent parts of the skull and cervical vertebrae.

When first described in 1960, Archosaurus was considered the oldest known archosaur and a close relative of Proterosuchus from the Early Triassic. However, Archosauria in modern terms is considered a more restricted group which Archosaurus lies outside of. The "classic" definition of archosaur utilized prior to the widespread use of cladistics is now roughly equivalent to the clade Archosauriformes. Archosaurus is still considered the oldest undisputed archosauriform, as well as one of the few valid members of the family Proterosuchidae.