In our 149th episode, we got to chat with Dr. Caleb Brown (@Brown_Caleb_M), who worked on the amazing new Borealopelta specimen, now on display at the Royal Tyrrell Museum (@RoyalTyrrell or facebook.com/RoyalTyrrellMuseum).

Episode 149 is also about Rebbachisaurus, a sauropod that lived in the Cretaceous in what is now Morocco.

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In this episode, we discuss:

News:

The dinosaur of the day: Rebbachisaurus

Name means “Rebbach lizard”

Sauropod that lived in the Cretaceous in what is now Morocco, in Africa (Aoufous Formation)

Named in 1954 by Lavocat

Several individuals were found (found part of the backbone, scapula, humerus, sacrum)

Type species is Rebbachisaurus garasbae

Gara Sba is the layer where Rebbachisaurus was found

Second species is Rebbachisaurus tamesnensis

About 46-66 ft (14-20 m) long and weighed about 7 tons

Part of the superfamily Diplodocoidea

Had a small head, long neck, and whiplike tail

Had a tall, ridged back (spines on its backbone that could have supported a “sail”)

There’s a South American sauropod, Rayososaurus, that looks very similar to Rebbachisaurus, which scientists think could mean there was a land connection between Africa and South America during the Early Cretaceous

Fun Fact:

Some dinosaurs ate grass.

discovered from a titanosaur coprolite (fossilized poop) Many plants contain unique silica structures (phytoliths) Grass incorporate to make them tougher (and harder to chew) It was only a small part of the titanosaur’s diet Based on their teeth, small mammals called Gondwanatherians were possibly the first to specialize in eating grass ~70Ma Widespread grasslands weren’t around for at least 20 to 40 Ma after non-avian dinosaurs went extinct Still don’t have evidence for grass before the latest cretaceous



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