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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:
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By Duncan Searl
Brand: Bearport Publishing
Released: August 1st, 2006
Library Binding (32 pages)
 | Lowest New Price: $28.50*
Usually ships within 6 to 10 days.*
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Click Here | Description:
The Maiasaura Nests: Jack Horner's Dinosaur Eggs (Fossil Hunters)- Manufacturer: Bearport Publishing
- Brand: Brand: Bearport Publishing
- ISBN: 1597162574
- EAN: 9781597162579
Details:- Product Category: Library Binding
- Number of Pages: 32
- Author: Duncan Searl
- Publication Date: August 1st, 2006
- Release Date: August 1st, 2006
Physical Description:- Size: 10.18 Inches by 8.18 Inches by 0.34 Inches
- Weight: 0.7 Pounds
Features:- Used Book in Good Condition
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By Janet Riehecky
Brand: Childs World
Released: December 1st, 1989
Library Binding (32 pages)
 | List Price: $21.36*
Lowest Used Price: $5.86*
In Stock.*
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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
- Publication Date: December 1st, 1989
- Release Date: December 1st, 1989
Physical Description:- Size: 10.5 Inches by 8.5 Inches by 0.5 Inches
- Weight: 0.65 Pounds
Features:- Used Book in Good Condition
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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: $6.67*
In Stock.*
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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: 0.76 Pounds
Features:- Used Book in Good Condition
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By John R. Horner
Running Press,U.S.
Released: April 1st, 1989
Paperback (56 pages)
 | Lowest Used Price: $9.99*
In Stock.*
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Maia: A Dinosaur Grows Up- Manufacturer: Running Pr Book Pub
- Brand: Running Press,U.S.
- ISBN: 0894716913
- EAN: 9780894716911
Details:- Paperback
- Edition: Reissue
- Number of Pages: 56
- Authors: John R. Horner, James Gorman
- Publication Date: April 1st, 1989
- Release Date: April 1st, 1989
Physical Description:- Size: 10.9 Inches by 0.2 Inches by 8.4 Inches
- Weight: 0.25 Pounds
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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: $6.21*
In Stock.*
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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: 0.5 Pounds
Features:- Used Book in Good Condition
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By Elizabeth J. Sandell
Bancroft Sage Pub
Released: August 1st, 1991
Paperback (32 pages)
 | Lowest New Price: $10.00*
In Stock.*
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Maiasaura: The Good Mother Dinosaur (Dinosaur Discovery Era)- Manufacturer: Bancroft Sage Pub
- ISBN: 0944280234
- EAN: 9780944280232
Details:- Paperback
- Number of Pages: 32
- Author: Elizabeth J. Sandell
- Publication Date: August 1st, 1991
- Release Date: August 1st, 1991
Physical Description:- Size: 12.0 Inches by 9.0 Inches by 0.25 Inches
- Weight: 0.3747858454 Pounds
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Maiasaura Toys
Here are some toys/games from Amazon.com:
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Maikouhai
Toy
 | Lowest New Price: $12.43*
In Stock.*
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Maikouhai Maiasaura Model Birthday Gifts School Project Dinosaur Collections Toys- Manufacturer: Maikouhai
- Brand: Maikouhai
- EAN: 7433447276968
- PartNumber: Maikouhai
Details:Features:- Premium Material for Durable and Long Lasting Dinosaur Action Figure: Made of environmently PVC , Safe, non-toxic, and environment friendly, to ensure you safety play. help kid to find confidence and motivate them to learn more new things.
- Fun and educational for both boys and girls. Kid dinosaur toys are great for home school, as part of a science project at school, or even for taking with you on road trips or in the house!
- Exquisite Workmanship Model for Kid: Great for the Children's Christmas, will make your Children very happy and surprised.Also Perfect Festival Birthday Gift For your kid.
- The dinosaur figures can be used as stocking stuffers, party favors, decorations, rewards and gifts. Perfect for a dinosaur themed birthday party, and science project or report.
- Dinosaur figures are painted with amazing detail, realistic, educational, and fun, this figurine is suitable for a range of interests, including collectors, teachers, and kid. Another special characteristic of this figure is the care in the details and postures, which gives the impression that the figurines are animated.
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FLORMOON
Toy
 | Lowest New Price: $16.94*
In Stock.*
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FLORMOON Dinosaur Toy - Realistic Maiasaura Animals Figure - Early Educational Toys Science Project Christmas Birthday for Boys and Girls- Manufacturer: FLORMOON
- Brand: FLORMOON
- UPC: 763944126792
- EAN: 0763944126792
- PartNumber: FLM-10408-1113US
Details: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!
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Collecta
Toy
 | Lowest New Price: $9.99*
In Stock.*
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CollectA Prehistoric Life Rajasaurus Toy Dinosaur Figure - Authentic Hand Painted & Paleontologist Approved Model- Manufacturer: CollectA
- Brand: Collecta
- Model: 88555
- EAN: 4892900885551
- PartNumber: 88555
Details:Physical Description:- Size: 2.44094 Inches by 6.61416 Inches by 1.10236 Inches
- Weight: 0.0220462262 Pounds
Features:- FUN FACTS: Rajasaurus means "Kingly Lizard". It was a bipedal theropod dinosaur with a unusual head crest.
- PALEONTOLOGIST APPROVED: Working with experts from across the globe, Collecta hand-painted figurines are all factually accurate and paleontologist-approved, so little ones get to learn while they play.
- AUTHENTICITY: Each prehistoric sculpture has been approved by Anthony Beeson, a well respected expert in palaeoimagery who is also an art librarian, archaeologist and collector, based in the city of Bristol, England.
- SAFETY: All CollectA products are individually hand crafted with only the finest materials and rigorously tested to ensure they meet the highest safety standards.
- PRODUCT SPECS: Rajasaurus measures 6.61 in L x 1.10 in W and is suitable for kids 3 and up.
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TOMY
Toy
 | Lowest New Price: $48.75*
In Stock.*
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Tomy International Dinosaur Train Mr. Maiasaura and Daphne DinoVision 2 Pack- Manufacturer: TOMY
- Brand: TOMY
- Model: LC53095
- UPC: 796714530956
- EAN: 0796714530956
- PartNumber: LC53095
Details:Physical Description:- Size: 7.5 Inches by 7.0 Inches by 2.625 Inches
- Weight: 0.3086471668 Pounds
Features:- Includes Mr. Maiasaura and exclusive 3D colored Daphne Daspletosaurus
- Bonus - Includes exclusive 3D glasses, put them on to see cool 3D effects on Daphne
- All figures are compatible with all Dinosaur Train sets, figures and train cars - Collect them all
- Collect them all
- For 3+ years
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Xisheep
As Show Misc.
| Lowest New Price: $5.19*
In Stock.*
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Xisheep Education Toys, Maiasaura Model Birthday Gifts School Project Dinosaur Collections Toys, for Home & Pastime- Manufacturer: Xisheep
- Brand: Xisheep
- UPC: 642697344021
- EAN: 0642697344021
- PartNumber: SA007
Details:Physical Description:Features:- container airtight food storage spices vacuum sealer bags rolls pack saver good grips container seal a meal saver commercial grade container heavy duty puncture prevention great vac storage meal prep container leak-proof containers with lids set of 10 pieces total stain resistant freshworks produce saver plastic stackable bins blue latching handles clear 5-pack reusable free bags keep fruits vegetables container fresher longer 20pc plastic pantry container open stock flour roll container
- dog food storage container cereal container smell proof sandwich water container lunch salad dressing container flour pill sugar dog treat container cat food snack plastic container independence day toddler snack coffee cereal food container oil rice waterproof container shoe container bacon grease container deodorant container store juice tea bread salt container cake gas sauce acrylic large container yogurt milk sharps disposal silicone protein powder metal storage box container
- meal prep containers storage food lunch plastic containers bins bento sandwich food box glass with lids freezer containers kitchen portion control travel cereal container contact lens ice cream canister set storage boxes water jug liquor dispenser lunch box stackable bento bins juice bottles salt pots and pans small snack container bathroom pets water container under bed storage rice clear travel bottles pantry organizers and storage containers
- glass candy jar ounce cookie pack with plastic airtight seal lid ways jar display bulk food storage snacks dry beans canister jar non-skid silicone feet hand painted ceramic jars antique copper paw set pet sugar metal jars glassware preserving container coffee tea spices cereal jars decor clear basic organization set-crystal diamond suitable dish tin biscuit barrel decorative gallon fresh small square sealed air-tight stainless-steel twist top pantry vintage extra wide stay-fresh jars
- 6 piece airtight acrylic canister set food storage container ounce multi-use vacuum seal portable dry goods canister food herbs black cap clear body coffee stainless steel fresher beans canister release measuring scoop with locking clamp pack gallon glass jar plastic lid wide mouth easy to clean dishwasher safe can sun tea fermentation plastic jars lids storage ideal peanut butter honey jam good grips pop large cookie canister
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Jurassic World Toys
Multicolor Toy
 | Lowest New Price: $29.99*
In Stock.*
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Jurassic World Roarivores Ankylosaurus- Manufacturer: Mattel
- Brand: Jurassic World Toys
- Model: GHT09
- UPC: 887961801088
- EAN: 0887961801088
- PartNumber: GHT09
Details:Physical Description:- Size: 3.2402 Inches by 3.7299 Inches by 9.2299 Inches
- Color: Multicolor
Features:- Get ready for thrilling action and adventure with Jurassic world!
- Inspired by the movie, Roarivores dinosaur action figures feature push button sound activation and signature attack moves iconic to their respective species.
- Play out movie action scenes with signature attack moves like chomping, biting and head butting.
- Each dinosaur figure has articulated arms and legs, realistic sculpting and authentic decoration.
- Choose from Roarivores Triceratops, Roarivores baryonyx, Roarivores metriacanthosaurus and Roarivores Allosaurus.
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Disney
Toy
 | Lowest New Price: $12.99*
In Stock.*
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Disney Moana Squeeze and Scream HeiHei- Manufacturer: Jakks
- Brand: Disney
- Model: 55351
- UPCs: 071534165121, 039897553511
- EANs: 0039897553511, 0071534165121
- PartNumber: 55351
Details:Physical Description:- Size: 12.0 Inches by 16.0 Inches by 14.0 Inches
- Weight: 0.7 Pounds
Features:- Relive the adventures of Disney’s Moana with Squeeze and Scream HeiHei
- Squeeze Heihei’s belly and he screams
- Made with soft plastic
- Stands approximately 12” tall
- Recommended for Ages 3+
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Meccano
Green Toy
 | List Price: $99.99*
Lowest New Price: $54.50*
In Stock.*
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Meccano - Meccasaur- Manufacturer: Spin Master
- Brand: Meccano
- Model: 6028398
- UPCs: 738613594196, 778988229415
- EANs: 0738613594196, 0778988229415
- PartNumber: 6028398
Details:Physical Description:- Size: 11.8 Inches by 3.9 Inches by 19.7 Inches
- Weight: 1.46827866492 Pounds
- Color: Green
Features:- Programmable T Rex robot interacts with you.
- Meccasaur responds to petting, answers yes/ no questions, and stomps around.
- Your new loyal friends guards against attacks and really roars!
- Meccasaur is for ages 10+ years and requires 4 C batteries (not included).
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