Question 1

How do you say Maiasaura?

Accepted Answer

Maiasaura is pronounced my-ah-SORE-ah. Break it into three parts: MY, then AH, then SORE-ah, with the stress landing on the SORE part. The ending sounds like the word 'sore' followed by a soft 'ah'. Say it out loud a few times and it starts to feel natural very quickly.

Question 2

What does Maiasaura mean?

Accepted Answer

Maiasaura means 'good mother lizard' in Greek. The first part of the name comes from the Greek word 'maia', meaning nursing mother or midwife. The second part, 'saura', is Greek for lizard. Scientists chose this name in 1979 specifically because fossils proved that Maiasaura actively cared for its babies in the nest, which was a revolutionary discovery at the time.

Question 3

How big was Maiasaura?

Accepted Answer

Maiasaura was a very large dinosaur, reaching about 30 feet long (9 meters) and weighing around 7,700 pounds (3,500 kilograms). That is heavier than a full-grown African elephant. It was not the biggest dinosaur that ever lived, but it was genuinely massive, roughly the length of two school buses placed end to end.

Question 4

Was Maiasaura a good mother?

Accepted Answer

Yes, and that is actually how it got its name. Fossil evidence from Montana shows that baby Maiasaura had underdeveloped leg joints when they hatched, meaning they could not walk far and needed adults to bring food to the nest. Scientists have found nests with the remains of plant material inside, suggesting parents actively fed their young. This makes Maiasaura one of the strongest examples of dinosaur parental care ever discovered.

Question 5

When did Maiasaura live?

Accepted Answer

Maiasaura lived during the Late Cretaceous period, roughly 86 to 70 million years ago. That is toward the end of the age of dinosaurs, only a few million years before the mass extinction that wiped out non-bird dinosaurs around 66 million years ago. It shared its world in what is now Montana and Alberta with other famous dinosaurs like Triceratops ancestors and early tyrannosaurs.

Question 6

What did Maiasaura eat?

Accepted Answer

Maiasaura was a plant eater, or herbivore. It used its wide, flat duck-like beak to strip vegetation from plants, then ground it up using batteries of hundreds of self-sharpening teeth packed together in its jaws. Scientists believe it ate conifers, ferns, and flowering plants that were common in its Late Cretaceous environment. It may have migrated seasonally to follow the best available plant growth.

Question 7

Where were Maiasaura fossils found?

Accepted Answer

Almost all Maiasaura fossils have been found in the Two Medicine Formation in Montana, USA, particularly near Choteau and the site known as Egg Mountain. There are also some records from Alberta, Canada. The Montana site is extraordinary because it contains not just adult skeletons but nests, eggs, hatchlings, and a massive bone bed with the remains of around 10,000 individuals in one location.

Question 8

Did Maiasaura travel to space?

Accepted Answer

Yes, incredibly, it did. A piece of Maiasaura bone and a piece of Maiasaura eggshell were carried aboard NASA Space Shuttle Challenger during mission STS-51-F in 1985. This makes Maiasaura the first dinosaur ever to leave Earth's atmosphere. The specimens were brought by astronaut and Montana native Loren Acton as a tribute to his home state's most famous fossil.

Question 9

How many teeth did Maiasaura have?

Accepted Answer

Maiasaura had around 700 teeth at any given time, packed into overlapping rows called dental batteries. These teeth were not used for biting like our teeth; instead they worked together like a grinding stone to pulverize tough plant material. As old teeth wore down, new ones grew in underneath to replace them, so Maiasaura always had a fresh set ready to go.

Question 10

Was Maiasaura dangerous?

Accepted Answer

Maiasaura was not a predator and had no sharp claws or fangs to attack with. It was a large plant eater that relied on living in big herds for protection. However, an animal weighing 7,700 pounds can be very dangerous if it feels threatened, the same way a modern elephant or hippopotamus is dangerous even though it eats plants. Maiasaura's best defense was size, numbers, and the ability to trample a threat underfoot.

Question 11

Is Maiasaura related to T. rex?

Accepted Answer

Maiasaura and T. rex were both dinosaurs, but they belong to completely different branches of the dinosaur family tree. T. rex was a theropod, a two-legged meat eater, while Maiasaura was a hadrosaur, a plant-eating ornithischian. They are about as distantly related as a lion and a cow are today. They did live at roughly the same time and in overlapping regions, so they likely encountered each other in life.

Question 12

How fast could Maiasaura run?

Accepted Answer

Scientists estimate that Maiasaura could move at speeds of roughly 15 to 25 miles per hour when running bipedally on its two hind legs. That is similar to a human sprinter's top speed. It was not the fastest dinosaur, but it was large enough that speed was not its only defense. When moving slowly to graze or travel, it likely walked on all four limbs, which would have been a steady and energy-efficient pace.

Question 13

What is Montana's state dinosaur?

Accepted Answer

Maiasaura is the official state fossil of Montana, a designation it received in 1985, the same year a piece of its bone went to space. Montana is one of the richest states in the US for dinosaur fossils, so competition was stiff, but Maiasaura won out because of its extraordinary scientific significance and because it was discovered in Montana by Montana-based researchers. It is a genuine point of pride for the state.

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