The Sinclair Oil Dinosaur – St. Louis, Missouri

Sixty-five million years ago, dinosaurs went extinct. But, in the 1900s, the Bronotsaurus came back. It came back in the form of a gas station mascot: The Sinclair Oil Dinosaur. Sinclair was a popular gas station in the mid 1900s, and distinctive big green dinos were fixtures near their pumps. Most people think that those dinosaurs went extinct in 1969, when Sinclair was acquired by the Atlantic Richfield Company (ARCO). At that time, the iconic green dino was all but retired. However, some persisted in the near future, and the persistent road tripper can even find a dino or two out there today.

However, finding a Sinclair Station Dinosaur in Missouri was harder than I’d imagined…

The Road Trip Journal & Activity Book - Everything You Need to Have and Record an Epic Road Trip! By Valerie Bromann

The Road Trip Journal & Activity Book

Everything You Need to Have and Record an Epic Road Trip!

Enjoy fun games and challenges to pass the time on your next road trip and have a keepsake to look back on for years to come with this entertaining must-have for your next vacation.

One gas station would be closed.

Closed Sinclair gas station in Missouri

One gas station would be open, but not have a dino in site.

Sinclair gas station without a dinosaur in Missouri

Another would be turned into a used car lot.

Sinclair gas station turned into a used car dealership in Missouri

But, finally, just at the end of my Missouri road trip, we had decided to try just one last time in St. Louis: and we were successful!

Sinclair Oil Dinosaur at a Sinclair gas station in St. Louis, Missouri
Sinclair Oil Dinosaur at a Sinclair gas station in St. Louis, Missouri
Sinclair Oil Dinosaur at a Sinclair gas station in St. Louis, Missouri
Sinclair Oil Dinosaur at a Sinclair gas station in St. Louis, Missouri
Sinclair Oil Dinosaur at a Sinclair gas station in St. Louis, Missouri

Sinclair dinosaurs can be found in many locations throughout the US. Some of the favorites I’ve found are the Rooftop Sinclair Dinosaur in Wilmington, Illinois; the Sinclair Gas Station Dinosaur in Sinclair, Wyoming; and the Giant Sinclair Dinosaur in Wisconsin Dells, Wisconsin.

Site: The Sinclair Oil Dinosaur
Location: 4317 Butler Hill Rd, St Louis, MO 63128
Cost: Free (gas will cost you)
Hours: Always visible.
Date:June 7, 2009

Pin this roadside attraction:

The Brontosaurus isn't extinct after all! After several false finds, we finally met a Sinclair Oil dinosaur at a gas station in St. Louis, Missouri. Visit this weird roadside attraction on a Missouri road trip and add "see a Sinclair dinosaur" to your travel bucket lists and itineraries.
#MissouriRoadsideAttractions #MissouriRoadsideAttraction #RoadsideAttractions #RoadsideAttraction #RoadTrip #MissouriRoadTrip #PlacestoVisitinMissouri #WeirdRoadsideAttractions #RoadTripStops
The Brontosaurus isn’t extinct after all! After several false finds, we finally met a Sinclair Oil dinosaur at a gas station in St. Louis, Missouri. Visit this weird roadside attraction on a Missouri road trip and add “see a Sinclair dinosaur” to your travel bucket lists and itineraries.

Valerie Bromann

Founder & ROad Trip Expert

Valerie Bromann is a a website manager, content creator, and writer from Chicago, Illinois (currently living in Dallas, Texas). As an avid road tripper who has visited hundreds of roadside attractions, Val always pull over for a world’s largest thing. Founder of Silly America and author of The Road Trip Journal & Activity Book, she visits, photographs, and writes about all the weird tourist destinations she visits and offers road trip planning advice and inspiration based on her own travels so you can hit the road for yourself.

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Last modified: November 15, 2022
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The Road Trip Journal & Activity Book - Everything You Need to Have and Record an Epic Road Trip! By Valerie Bromann

The Road Trip Journal & Activity Book

Everything You Need to Have and Record an Epic Road Trip!

BY Valerie Bromann

Enjoy fun games and challenges to pass the time on your next road trip and have a keepsake to look back on for years to come with this entertaining must-have for your next vacation.

The road trip you’ve been dreaming of starts here! Journal about your stops and get to know your fellow passengers with activities and exercises designed to pass the time and bring you closer together. Instead of “Are we there yet?” you’ll find yourself asking, “We’re there already?”. Complete with prompts you can turn to while driving between locations, this journal will one day be a memento of your life-changing trip.