If you need an idea of what is necessary for a page format-wise, take a look at our wiki's editing guidelines for what is our bare minimum.
In short, the format would be
A small paragraph briefly introducing the taxon "___ is an extinct genus of theropod from Canada" yada yada lol
Discovery and Naming section: where was it found? who named it and when? what is it named after? what parts of the body was discovered?
Description: how big is it? what notable features does it have that are unique from others? any crests, horns, wings, feathers?
Classification: what family does it belong to? is it basal or derived? does it have a close living relative?
Categories: look on other pages for an idea on what categories this dinosaur should have. Things like where it was found, what formation it belongs to, what era in time it lived, any families, etc.
Everything else is optional but many pages often have
Infoboxes: the template of Taxobox is used to stick the family and age of the animal in easy view alongside an image. Try copy-pasting the ones in the guidelines and just replace everything with what applies to your taxon.
Paleoecology: what dinosaurs did it live with? was it a top predator or a common prey item? what did it eat?
