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Maiasaura
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Maiasaura was a plant-eating dinosaur that lived in
North America during the late Cretaceous period,
about 80 to
65 million years ago.
It was probably one of the dinosaurs that died out in the Cretaceous-Tertiary
extinction,
65 million years ago.
Maiasaura adults were about 30 feet (9.1 meters) long,
and weighed 3 to 4 tons.
The creature could walk on two or four legs, and had
no obvious defenses against predators except for its
heavy muscular tail, and the fact that it lived in
large herds (some herds many have consisted of as many
as 10,000 individuals).
When Maiasaura was first discovered in
western
Montana
in 1978
by "Jack" Horner
and Robert Makela,
a complete nesting site was
found, where the dinosaurs laid their eggs, and nutured their young.
The nests were mounds of mud, with a depression in the center of each
mound. The eggs had been laid with great care, arranged in circles and layers
within the depression, each nest containing 30 to 40 eggs, each about the size
of an ostrich egg. Scientists believe that
Maiasaura would probably have covered each layer of eggs with sand or earth,
to protect them from predators, and
to keep the eggs warm. Although the parents are not believed to have sat
on the nests, it is highly likely that heat generated by
rotting vegetation in the nest, contributed to warming the eggs.
The name Maiasaura means "Good Mother Lizard", and was chosen in honor of the fact
that it was the first dinosaur species discovered with clear and convincing
evidence that it cared for its young.
This includes the fact that
fossils
of baby Maiasaura show that the hatchlings' legs were not fully
developed, and were incapable of walking, yet also show partially
worn teeth, indicating that the adults brought food to the nest.
Maiasaura has been designated the official state
fossil
of
Montana,
since
1985.
Maiasaura was the first dinosaur in space. A Maiasaura egg-shell, and a piece
of bone from a baby Maiasaura, were taken into space by NASA in
1985.
Maiasaura was a herbivore (plant-eater) that lived from 80 to 65 million years ago
Related Information & Resources
See Also
Maiasaura Facts
Here is a summary of some of the key facts about Maiasaura:
- Maiasaura was a genus of dinosaur.
- "Maiasaura" means "good mother lizard". This name was chosen by "Jack" Horner and Robert Makela in 1978, and refers to the fact this was the first dinosaur for which evidence of naturing behavior was found.
- Maiasaura was a member of the Ornithischia ("bird-hipped") order of dinosaurs. What this means, is that although Maiasaura was not closely related to birds, it did have similarly shaped pelvic bones.
- Maiasaura was a Hadrosaur (usually known as "duck-billed dinosaur") - a member of a group of related herbivorous (plant-eating) dinosaurs that were very successful in the Cretaceous period.
- Maiasaura lived between about 80 million years ago and 65 million years ago, during the late Cretaceous period.
- Maiasaura was one of the dinosaurs which died out during the Cretaceous-Tertiary mass extinction at the end of the Mesozoic Era.
- Maiasaura lived in North America.
- Maiasaura was a herbivore (plant-eater).
- Maiasaura was about 30 feet (9.1 meters) long.
- Maiasaura weighed about 3 to 4 tons.
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Maiasaura Books Here are some books from Amazon.com:
Disclosure: Products details and descriptions provided by Amazon.com. Our company may receive a payment if you purchase products from them after following a link from this website.
By Susan Heinrichs Gray
Brand: Child's World Released: August 1st, 2009 Library Binding (24 pages)
 | List Price: $32.79* Lowest Used Price: $7.85* In Stock* *(As of 21:45 Pacific 22 Sep 2023 More Info)
Click Here | Description: Maiasaura (Introducing Dinosaurs)- Manufacturer: Childs World Inc
- Brand: Brand: Child's World
- ISBN: 1602532397
- EAN: 9781602532397
Details:- Product Category: Library Binding
- Format: Picture Book
- Edition: Illustrated
- Number of Pages: 24
- Author: Susan Heinrichs Gray
- Publication Date: August 1st, 2009
- Release Date: August 1st, 2009
Physical Description:- Size: 8.5 inches by 9.5 inches by 0.25 inches
- Weight: 0.6 Pounds
Features:- Used Book in Good Condition
Click here for more information |
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By Janet Riehecky
Brand: Childs World Library Binding (32 pages)
 | List Price: $21.36* Lowest New Price: $11.00* In Stock* *(As of 21:45 Pacific 22 Sep 2023 More Info)
Click Here | Description: Maiasaura : Dinosaurs Series- Manufacturer: The Childs World Inc
- Brand: Brand: Childs World
- ISBN: 0895655438
- EAN: 9780895655431
Details:- Product Category: Library Binding
- Number of Pages: 32
- Author: Janet Riehecky
Physical Description:- Size: 10.5 inches by 8.5 inches by 0.5 inches
- Weight: 0.6 Pounds
Features:- Used Book in Good Condition
Click here for more information |
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By Dougal Dixon
Brand: Picture Window Books Released: September 1st, 2006 Library Binding (24 pages)
 | List Price: $26.65* Lowest Used Price: $1.69* In Stock* *(As of 21:45 Pacific 22 Sep 2023 More Info)
Click Here | Description: Maiasaura and Other Dinosaurs of the Midwest (Dinosaur Find)- Manufacturer: Picture Window Books
- Brand: Brand: Picture Window Books
- ISBN: 1404827498
- EAN: 9781404827493
Details:- Product Category: Library Binding
- Number of Pages: 24
- Author: Dougal Dixon
- Publication Date: September 1st, 2006
- Release Date: September 1st, 2006
Physical Description:- Size: 9.9999999898 inches by 9.9999999898 inches by 0.25196850368 inches
- Weight: 0.85 Pounds
Features:- Used Book in Good Condition
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By Duncan Searl
Bearport Publishing Released: August 1st, 2006 Library Binding (32 pages)
 | List Price: $29.95* Lowest Used Price: $8.22* In Stock* *(As of 21:45 Pacific 22 Sep 2023 More Info)
Click Here | Description: The Maiasaura Nests: Jack Horner's Dinosaur Eggs (Fossil Hunters)- Manufacturer: Bearport Books
- Brand: Bearport Publishing
- ISBN: 1597162574
- EAN: 9781597162579
Details:- Product Category: Library Binding
- Format: Illustrated
- Edition: Illustrated
- Number of Pages: 32
- Author: Duncan Searl
- Publication Date: August 1st, 2006
- Release Date: August 1st, 2006
Physical Description:- Size: 10.25 inches by 8.25 inches by 0.5 inches
- Weight: 0.7 Pounds
Features:- Used Book in Good Condition
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By Daniel Cohen
Brand: Bridgestone Books Released: January 1st, 2004 Library Binding (24 pages)
 | List Price: $23.32* Lowest Used Price: $6.74* In Stock* *(As of 21:45 Pacific 22 Sep 2023 More Info)
Click Here | Description: Maiasaura (Discovering Dinosaurs)- Manufacturer: Capstone Press
- Brand: Brand: Bridgestone Books
- ISBN: 0736825223
- EAN: 9780736825221
Details:- Product Category: Library Binding
- Number of Pages: 24
- Author: Daniel Cohen
- Publication Date: January 1st, 2004
- Release Date: January 1st, 2004
Physical Description:- Size: 7.99999999184 inches by 8.12598424368 inches by 0.31102362173 inches
- Weight: 0.45 Pounds
Features:- Used Book in Good Condition
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By Virginia Schomp
Cavendish Square Publishing Released: January 30th, 2005 Library Binding (31 pages)
 | List Price: $32.64* Lowest New Price: $19.42* In Stock* *(As of 21:45 Pacific 22 Sep 2023 More Info)
Click Here | Description: Maiasaura: And Other Duck-Billed Plant-Eaters (Prehistoric World)- Manufacturer: Cavendish Square Publishing
- Brand: Cavendish Square Publishing
- ISBN: 0761415459
- EAN: 9780761415459
Details:- Product Category: Library Binding
- Edition: Illustrated
- Number of Pages: 31
- Author: Virginia Schomp
- Publication Date: January 30th, 2005
- Release Date: January 30th, 2005
Physical Description:- Size: 10.24 inches by 10.14 inches by 0.43 inches
- Weight: 0.94 Pounds
Features:- Used Book in Good Condition
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By Maiasaura Press
Independently published Released: September 12th, 2023 Paperback (100 pages)
 | Lowest New Price: $4.99* In Stock* *(As of 21:45 Pacific 22 Sep 2023 More Info)
Click Here | Description: Daily Journal- Manufacturer: Independently published
Details:- Paperback
- Number of Pages: 100
- Author: Maiasaura Press
- Publication Date: September 12th, 2023
- Release Date: September 12th, 2023
Physical Description:- Size: 8.5 inches by 5.5 inches by 0.25 inches
Click here for more information |
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Maiasaura Toys Here are some toys/games from Amazon.com:
Disclosure: Products details and descriptions provided by Amazon.com. Our company may receive a payment if you purchase products from them after following a link from this website.
Flormoon
 | Lowest New Price: $18.34* In Stock* *(As of 21:45 Pacific 22 Sep 2023 More Info)
Click Here | Description: Flormoon Dinosaur Toy - Realistic Maiasaura Animals Figure - Early Educational Toys Science Project Christmas Birthday for Boys and Girls- Manufacturer: FLORMOON
- Brand: Flormoon
- Model: 530
- UPC: 763944126792
- EAN: 0763944126792
- PartNumber: 530
Features:- Safety Material - Animal Figurines made of durable Eco-friendly plastic material, BPA Free, Phthalates Free and Non-Toxic. Conforms to Releated Toy Safety Standards. Safety always comes first.
- Realistic Animal Figures - Our Animal figurines was hand painted with high realistically detailed appearance, cute face and childish eyes. Their uniquely molded textures and richly painted details make the animals vivid.
- Imaginative Play - The Realistic animals Figure palyset will spark hours of imaginative play. Make away your kids from electronics and let your child's imagination run wild as they create imaginary interactions with African wild animals figurines toys.
- Great Fift for Children - The animal figurines toys are great for stocking stuffers, Christmas party favors, holidays, birthday party games, educational purposes, learning Playset toys, party decoration, party favors or rewards. Ideal party or birthday gifts supplies set for a jungle animals world themed.
- Long-term Warranty - We have a no hassle 108% guarantee refund policy. If you get the play animal figures set and do not love them, simply return for a full refund. Just Add to your cart now!
Click here for more information |
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Flormoon
 | Lowest New Price: $10.10* In Stock* *(As of 21:45 Pacific 22 Sep 2023 More Info)
Click Here | Description: Flormoon Animal Figures Realistic Maiasaura Child Plastic Early Educational Toys Cupcake Topper Party Gift for Kids 2+ Year Old- Manufacturer: FLORMOON
- Brand: Flormoon
- UPC: 727380056914
- EAN: 0727380056914
- PartNumber: US0220EJ*10621
Physical Description:- Weight: 0.3086471668 Pounds
Features:- Best Gift for 2 year old up: Our toy animal is an awesome birthday gift or reward and look great as kid's room decoration. Kids love that very much.
- Safety Kids Toy: Animal action figures was made of plastic durable material, Eco-friendly, BPA Free, Phthalates Free. Conforms to ASTM/CE/CPSC Toy Safety Standards.
- Realistic Toy Figures: Our animal toys was hand painted with high realistically detailed appearance. Their uniquely molded textures and richly painted details make the animals vivid.
- Jungle Animals World Themed Party: The animal figurines toys are great for Christmas party favors, holidays, birthday party games, science project, early educational toys, party decoration or rewards.
- Early Educational Toys: Miniature animal figurines will spark hours of imaginative play. It will help to improve children's concentration and outsight, develop and train their imagination and creativity.
Click here for more information |
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Flormoon
 | Lowest New Price: $11.73* In Stock* *(As of 21:45 Pacific 22 Sep 2023 More Info)
Click Here | Description: FLORMOON Maiasaura Child Figure Realistic Animal Figurines Early Educational Dinosuar Toy Science Project Christmas Birthday Cake Topper for Kids Toddler- Manufacturer: FLORMOON
- Brand: Flormoon
- Model: C1008
- UPC: 758048029766
- EAN: 0758048029766
- PartNumber: C1008
Physical Description:Features:- Safety Material - Animal Figurines made of durable Eco-friendly plastic material, BPA Free, Phthalates Free and Non-Toxic. Conforms to Releated Toy Safety Standards. Safety always comes first.
- Realistic Animal Figures - Our Animal figurines was hand painted with high realistically detailed appearance, cute face and childish eyes. Their uniquely molded textures and richly painted details make the animals vivid.
- Imaginative Play - The Realistic animals Figure palyset will spark hours of imaginative play. Make away your kids from electronics and let your child's imagination run wild as they create imaginary interactions with African wild animals figurines toys.
- Great for Kids 3+ Year Old - The animal figurines toys are great for stocking stuffers, Christmas party favors, holidays, birthday party games, educational purposes, learning Playset toys, party decoration, party favors or rewards. Ideal party or birthday gifts supplies set for a jungle animals world themed.
- Long-term Warranty - We have a no hassle 100% guarantee refund policy. If you get the play animal figures set and do not love them, simply return for a full refund. Just Add to your cart now!
Click here for more information |
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JOYIN Multi_color Toy
 | Lowest New Price: $24.99* In Stock* *(As of 21:45 Pacific 22 Sep 2023 More Info)
Click Here | Description: JOYIN 12pcs Dinosaur Figures Playset 7 Inch, Realistic Jurassic Dinosaur Toy with Educational Book for Kid, Large Dinosaur for Toddler, Easter Valentines Day Gift for Boy and Girl, Party Favor- Manufacturer: Joyin Inc
- Brand: JOYIN
- UPC: 812355039068
- EAN: 0812355039068
- PartNumber: 10946
Details:Physical Description:- Size: 7.0 inches by 9.84 inches by 10.0 inches
- Color: Multi_color
Features:- SUPER VALUE PACK. Our Dinosaur 12-Piece Playset Pack includes 12 realistic, intricately designed, lifelike dinosaur action figures and a booklet!
- SUPER EDUCATIONAL FUNCTIONS. Each dinosaur in the dinosaur goodie box comes to life with pictures and facts found inside the fully illustrated dinosaur booklet. Children can make stories with the dinosaur and learn more STEM knowledge and encourage vocabulary development by learning the names and facts with the help of the instructional book.VALUE PACK. Our Dinosaur 12-Piece Playset Pack includes 12 realistic, intricately designed, lifelike dinosaur action figures and a booklet!
- PERFECT FOR GROWING MINDS! Our jumbo prehistoric dinosaur kit is perfect as stocking stuffers, party favors, birthday party games, educational purposes, party decoration, handouts or rewards. Ideal party favor or gift for a dinosaur themed birthday party.
- PREMIUM QUALITY. Very durable and hand-painted with full details. Made with durable non-toxic BPA-free vinyl. Safety test approved.
- CUSTOMER SATISFACTION. Providing a 100% satisfaction experience is our main priority to our customers. Feel free to message us through “contact sellers” if products don't meet your expectations. The celebrations start at JOYIN!
Click here for more information |
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Schleich Multi Toy
 | List Price: $19.99* Lowest New Price: $13.90* In Stock* *(As of 21:45 Pacific 22 Sep 2023 More Info)
Click Here | Description: Schleich Dinosaurs, Large Dinosaur Toys for Boys and Girls, Realistic Amargasaurus Toy Dinosaur Figure, Ages 4+- Manufacturer: Schleich
- Brand: Schleich
- Model: 15029
- EAN: 4059433363899
- PartNumber: 15029
Details:Physical Description:- Size: 3.7 inches by 10.3 inches by 10.3 inches
- Weight: 0.222 Pounds
- Color: Multi
Features:- DETAILED & REALISTIC. Crafted with precision and authentic detail to create a lifelike toy that teaches and inspires toddlers and kids; helps introduce children to animals. From the first sketch to the intricate finishing touches, we see value in every detail.
- What if Amargasaurus used those spines on its back to hold keychains? Or to carry farm equipment? Or to protect it from flying sheep? In a child’s hand, a Schleich toy dinosaur’s story can go a gazillion directions.
- Crafted to endure meteors, volcanic eruptions, and skateboard launches down the driveway.
- Part of the Schleich Dinosaurs collection, which includes dozens of realistic dinosaur figurines and dinosaur playsets for hours of imaginative play and storytelling (each sold separately).
- EXPERT APPROVED. “Schleich playsets and figurines inspire kids to play imaginatively: an essential part of healthy childhood development so often overlooked in today’s fast-paced world.” - Dr. Sandra Stone, open-ended play expert
Click here for more information |
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YouCute
 | Lowest New Price: $12.99* In Stock* *(As of 21:45 Pacific 22 Sep 2023 More Info)
Click Here | Description: 8 Safari Animal Figures Toys Jungle Animals for Boys Realistic Play Zoo Gift for Toddlers Boys Girls Toddlers Kids- Manufacturer: YouCute
- Brand: YouCute
- PartNumber: 602A
Physical Description:Features:- Animal type: Including Lion,Tiger,Bison,Brown Bear,Panda,Wolf,Hippo,Kangaroo.
- Great Gift:This animal toys set is great for zoo theme party, school classrooms rewards,prize, Christmas gift,or party supplie.could be a great gift for any occasion.
- High Quality:Animal figures toys are made of high quality durable plastic.Meet US toy standard.this is designed for kids.
- Learning Educational toys: They're also the great pretend play props , creative the kids thinking and active cognitive learning through imaginative play.animal toys can also make away your kids from electronics.
- Packing include:8 animals ,1 animal book,1 gift box.
Click here for more information |
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