So... I didin't wanted to fill my artstation with Ark Assets, but I worked for the game for more than two years, I made a selection of early objects that I modeled for the base game (No DLC stuff in here). The Rex Saddle was the first creature saddle created for the game, in fact, it was my first asset in Efecto Studios, it was one of those love-hate kind of things, that design began a leather-straps-on-everything trend... I still have nightmares of straps retopology. Besides that... a lot of good memories.
The concept artists behind most of these assets are Sebastián Kowoll - https://www.artstation.com/sebastiankowoll - and Andrés Martínez -https://www.artstation.com/andresmgi -