Near Glen Rose in Somervell County, Texas — The American South (West South Central)

Apatosaurus

"deceptive lizard"

Photographed By James Hulse, June 14, 2021

1. Apatosaurus Marker

Inscription. Click to hear the inscription.

Formerly known as Brontosaurus, "thunder lizard," Apatosaurus was among the largest of land animals that ever lived. One specimen measured 75 feet long and probably weighed 33 tons. Its brain was the size of a human fist. It lived in the Late Jurassic, from 160 to 140 million years ago, and roamed western North Americà from Montana to Oklahoma to Baja California. Its long neck allowed it to browse on young, tender twigs and needles at the very tops of trees like pines, firs and sequoias. It needed to eat a quarter ton of food per day.

Erected by Dinosaur Valley State Park.

Topics. This historical marker is listed in these topic lists: Paleontology • Parks & Recreational Areas.

Location. 32° 14.867′ N, 97° 48.965′ W. Marker is near Glen Rose, Texas, in Somervell County. Marker is on Park Road 59, one mile north of County Highway 205, on the right when traveling north. The marker is located next to the Dinosaur Valley State Park Store. Touch for map. Marker is at or near this postal address: 1629 Park Road 59, Glen Rose TX 76043, United States of America. Touch for directions.

Other nearby markers. At least 8 other markers

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are within walking distance of this marker. Dinosaurs (here, next to this marker); Making a Dinosaur (here, next to this marker); Tyrannosaurus rex (here, next to this marker); Misleading Models (a few steps from this marker); World's Fair Wonders (a few steps from this marker); An Ancient Story (about 600 feet away, measured in a direct line); Ancient Secrets Revealed (about 700 feet away); Deep Water Shelter (about 700 feet away). Touch for a list and map of all markers in Glen Rose.

Also see . . . Apatosaurus.

The skull of Apatosaurus was confused with that of Camarasaurus and Brachiosaurus until 1909, when the holotype of A. louisae was found, and a complete skull just a few meters away from the front of the neck. Henry Fairfield Osborn disagreed with this association, and went on to mount a skeleton of Apatosaurus with a Camarasaurus skull cast. Apatosaurus skeletons were mounted with speculative skull casts until 1970, when McIntosh showed that more robust skulls assigned to Diplodocus were more likely from Apatosaurus. Source: Wikipedia

(Submitted on November 26, 2021, by James Hulse of Medina, Texas.)

The Apatosaurus and Marker image. Click for full size.

Photographed By James Hulse, June 14, 2021

2. The Apatosaurus and Marker

The Apatosaurus image. Click for full size.

Photographed By James Hulse, June 14, 2021

3. The Apatosaurus

The Apatosaurus Marker is the marker on the left of the two markers

Credits. This page was last revised on November 27, 2021. It was originally submitted on November 26, 2021, by James Hulse of Medina, Texas. This page has been viewed 114 times since then and 21 times this year. Photos: 1, 2, 3. submitted on November 26, 2021, by James Hulse of Medina, Texas.