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Hadrosaurus
Scientific Classification |
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Arguably nomen dubium |
Some scientists consider this a nomen dubium - a scientific name of unknown or doubtful application |
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Superfamily |
Hadrosauroidea |
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Hadrosaurus was a herbivore (plant-eater) that lived in North America
during the Cretaceous period
between about 80 and 75 million years ago.
An adult Hadrosaurus has been estimated to be about 30 feet (9.1 meters)
long and weigh around 7 tons. Like other duck-billed dinosaurs, Hadrosaurus is
believed to have generally been bipedal, but could walk on 4 limbs when feeding.
The story of the discovery of Hadrosaurus is quite interesting. The first
fossilized
bones of the animal were discovered by
John Estaugh Hopkins in 1838 near Haddonfield,
New Jersey,
who then displayed them in his home.
These bones were seen by William Parker Foulke in 1858, who returned to the
excavation site (now a national historic landmark - the
"Hadrosaurus Foulkii Leidy Site") and found additional bones
in conjunction with a paleontologist, Joseph Leidy. Leidy subsequently named
the species Hadrosaurus foulkii in honor of his collaborator.

Leidy wrote a description of the Hadrosaurus, complete with illustrations, in 1860,
but the American Civil War delayed publication until 1865. Leidy, contrary to prevailing
views at the time, correctly reconstructed the skeleton as bipedal, and a complete
the skeleton was reconstructed in this form in 1868 - the first mounted dinosaur
skeleton.

It should be noted however, that only one skeleton of Hadrosaurus has ever been found,
and this specimen lacks a skull (among other bones). Reconstructions of the animal
are therefore usually done using skulls of related species. Because of the lack of
specimens, which makes it difficult to perform comparisons with other species,
many scientists consider Hadrosaurus to be a "nomen dubium" - a dubious name.
Hadrosaurus was a herbivore (plant-eater) that lived from 80 to 75 million years ago
Related Information & Resources
See Also
Hadrosaurus Facts
Here is a summary of some of the key facts about Hadrosaurus:
- Hadrosaurus was a genus of dinosaur. Hadrosaurus is considered by some to be a "nomen dubium" (a scientific name of unknown or doubtful application) - because only a few fossils have been found (one very incomplete skeleton missing a skull and many other bones), and, as a result, it is impossible to compare it to its relatives for classification purposes.
- "Hadrosaurus" means "sturdy lizard".
- Hadrosaurus was a member of the Ornithischia ("bird-hipped") order of dinosaurs. What this means, is that although Hadrosaurus was not closely related to birds, it did have similarly shaped pelvic bones.
- Hadrosaurus 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.
- Hadrosaurus lived between about 80 million years ago and 75 million years ago, during the late Cretaceous period.
- Hadrosaurus lived in North America.
- Hadrosaurus was a herbivore (plant-eater).
- Hadrosaurus was about 30 feet (9.1 meters) long.
- Hadrosaurus weighed about 7 tons.
- Hadrosaurus is the official state dinosaur of New Jersey.
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Hadrosaurus 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 Rob Shone
PowerKids Press Released: August 30th, 2009 Library Binding (32 pages)
 | Lowest New Price: $30.27* In Stock* *(As of 23:31 Pacific 29 Nov 2023 More Info)
Click Here | Description: Hadrosaurus: The Duck-billed Dinosaur (Graphic Dinosaurs)- Manufacturer: Powerkids Pr
- Brand: PowerKids Press
- ISBN: 1435885910
- EAN: 9781435885912
Details:- Product Category: Library Binding
- Format: Illustrated
- Edition: Illustrated
- Number of Pages: 32
- Author: Rob Shone
- Publication Date: August 30th, 2009
- Release Date: August 30th, 2009
Physical Description:- Size: 10.75 Inches by 9.0 Inches by 0.25 Inches
- Weight: 0.9 pounds
Click here for more information |
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By CAMILLE JENKINS
Independently published Released: September 23rd, 2020 Paperback (58 pages)
 | Lowest New Price: $7.14* In Stock* *(As of 23:31 Pacific 29 Nov 2023 More Info)
Click Here | Description: Hadrosaurus Coloring Book- Manufacturer: Independently published
- EAN: 9798689621234
Details:- Paperback
- Number of Pages: 58
- Author: CAMILLE JENKINS
- Publication Date: September 23rd, 2020
- Release Date: September 23rd, 2020
Physical Description:- Size: 11.0 inches by 8.5 inches by 0.14 inches
Click here for more information |
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By Darlene R. Stille
Brand: Rourke Pub Group Library Binding (24 pages)
 | List Price: $27.07* Lowest Used Price: $10.14* In Stock* *(As of 23:31 Pacific 29 Nov 2023 More Info)
Click Here | Description: Hadrosaurus (North American Dinosaurs)- Manufacturer: Rourke Pub Group
- Brand: Brand: Rourke Pub Group
- ISBN: 1600442528
- EAN: 9781600442520
Details:- Product Category: Library Binding
- Edition: Illustrated
- Number of Pages: 24
- Author: Darlene R. Stille
Physical Description:- Size: 10.0 inches by 7.5 inches by 0.25 inches
- Weight: 0.5705122416036 Pounds
Features:- Used Book in Good Condition
Click here for more information |
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By Leigh Rockwood
PowerKids Press Released: August 30th, 2011 Paperback (24 pages)
 | Lowest New Price: $9.25* Temporarily out of stock. Order now and we'll deliver when available. We'll e-mail you with an estimated delivery date as soon as we have more information. Your account will only be charged when we ship the item.* *(As of 23:31 Pacific 29 Nov 2023 More Info)
Click Here | Description: Hadrosaurus (Dinosaurs Ruled!)- Manufacturer: Powerkids Pr
- Brand: PowerKids Press
- ISBN: 1448850967
- EAN: 9781448850969
Details:- Paperback
- Number of Pages: 24
- Author: Leigh Rockwood
- Publication Date: August 30th, 2011
- Release Date: August 30th, 2011
Physical Description:- Size: 8.75 inches by 5.75 inches by 0.25 inches
- Weight: 0.4 Pounds
Click here for more information |
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Hadrosaurus 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.
Mattel Released: May 15th, 2022 Multicolor Toy (0 pages)
 | List Price: $18.99* Lowest New Price: $17.49* In Stock* *(As of 23:31 Pacific 29 Nov 2023 More Info)
Click Here | Description: Jurassic World Dominion Roar Strikers Ankylosaurus Dinosaur Action Figure with Roaring Sound and Attack Action, Toy Gift Physical & Digital Play- Manufacturer: Mattel
- Brand: Mattel
- Model: HDX36
- UPC: 194735034048
- EAN: 0194735034048
- PartNumber: HDX36
Details:- Product Category: Toy
- Number of Pages: 0
- Publication Date: May 15th, 2022
- Release Date: May 15th, 2022
Physical Description:- Size: 6.6929 Inches by 2.7559 Inches by 10.2362 Inches
- Weight: 0.7605948039 Pounds
- Color: Multicolor
Features:- Jurassic World: Dominion brings new thrills and adventures to dinosaur lovers. At about 13 in long, this Roar Strikers Ankylosaurus figure inspired by the movie will expand the definition of dinosaur fun!
- This action figure has a big ROARING sound and a tail WHIP attack action, for realistic battle play. It's easy for kids to active the features – they just press down on the hip area
- See dinosaur play get REAL! Find the hidden DNA code and scan it with any smart device to initiate Augmented Reality options in the free Jurassic World Facts app. Smart device not included
- AR lets kids study the dinosaur in the lab with fun visual learning and explore different modes, like thermal and x-ray! Then, take it to the next level and bring dinosaurs into our world through AR -make the dinosaur appear in any room. RUN!
- Kids can collect all the Roar Strikers dinosaurs for rowdy, action-filled play. ROAR! Chomp! Whip!
- Makes a great gift for any dinosaur enthusiast, especially Jurassic World: Dominion fans.
Click here for more information |
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Schleich Multi Accessory
 | Lowest New Price: $19.95* In Stock* *(As of 23:31 Pacific 29 Nov 2023 More Info)
Click Here | Description: Schleich Dinosaurs Realistic Ankylosaurus Dinosaur Figure - Detailed Prehistoric Jurassic Dino Toy, Highly Durable for Education and Fun for Boys and Girls, Gift for Kids Ages 4+- Manufacturer: Schleich
- Brand: Schleich
- Model: 15023
- EAN: 4059433011844
- PartNumber: 15023
Details:- Product Category: Accessory
Physical Description:- Size: 4.2 inches by 5.5 inches by 5.5 inches
- Weight: 0.31 pounds
- Color: Multi
Features:- DETAILED & REALISTIC. Crafted with precision and authentic detail to create a lifelike toy that teaches and inspires toddlers and kids of every age; helps introduce children to animals. From the first sketch to the intricate finishing touches, we see value in every detail.
- HEALTHY IMAGINATIVE PLAY. The Ankylosaurus from Schleich is carefully designed to inspire safe and creative pretend play for children as both a single toy or part of a larger collection.
- PART OF A GROWING PLAY WORLD. The Ankylosaurus is part of the Dinosaurs collection of figurines and playsets from Schleich. Great for gifting, this figurine can stand alone or fit into a larger, modular play world. The Dinosaurs Dino Set with Cave is an excellent accompaniment.
- BUILT TO LAST. As an 85-year-old German toy company, we are committed to manufacturing realistic toys with the highest standard of quality and safety for years of durable play and collectability. All products and the materials used meet or exceed the strictest applicable national and international toy safety requirements.
- 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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Mattel Released: February 1st, 2022 Multicolor Toy (0 pages)
 | List Price: $37.99* Lowest New Price: $33.76* In Stock* *(As of 23:31 Pacific 29 Nov 2023 More Info)
Click Here | Description: Mattel Jurassic World Toys Dominion Sound Slashin Therizinosaurus Dinosaur Action Figure Toy with Attack Feature and Sounds- Manufacturer: Mattel
- Brand: Mattel
- Model: GWD65
- UPC: 887961938609
- EAN: 0887961938609
- PartNumber: GWD65
Details:- Product Category: Toy
- Number of Pages: 0
- Publication Date: February 1st, 2022
- Release Date: February 1st, 2022
Physical Description:- Size: 9.5118 inches by 13.5512 inches by 5.1457 inches
- Weight: 1.212542441 Pounds
- Color: Multicolor
Features:- Jurassic World Dominion brings new dinosaur action and thrills, including this exciting large Sound Slashin' Therizinosaurus action figure.
- Watch out for the HUGE claws that make side-slashing attacks. Hear epic sound effects and experience a lunging action completed with a CHOMP.
- This terrifying dinosaur stars in a critical role in the movie and can play a huge part in at-home storylines, too.
- Download the free Jurassic World Facts app (Android and iOS) and see dinosaur play get REAL. Find the hidden DNA code and scan it with any smart device to initiate Augmented Reality (AR) options. Smart device not included.
- AR lets kids study the dinosaur in the lab with fun visual learning and explore different modes, like thermal and x-ray. Then, take it to the next level and bring dinosaurs into our world through AR -- make the dinosaur appear in any room. RUN.
Click here for more information |
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E EAKSON
 | List Price: $21.99* Lowest New Price: $16.99* In Stock* *(As of 23:31 Pacific 29 Nov 2023 More Info)
Click Here | Description: E EAKSON 27-Pack Kids Dinosaur Figures Set, 3-7 Inch Realistic Plastic Toys, STEM Educational Playset for Boys & Girls, Including T-Rex, Stegosaurus, Triceratops- Manufacturer: HAODAIWANJU
- Brand: E EAKSON
- EAN: 7082146929059
- PartNumber: GSS015
Details:Physical Description:- Size: 3.0 inches by 7.0 inches by 5.0 inches
- Weight: 1.0802650838 pounds
Features:- ★【CHILD FRIENDLY & SAFE】 Made of durable high-quality plastic, non-toxic, BPA free and eco-friendly, strong enough to withstand hours of rugged play. Tested to be safe for kids.
- ★【PERFECT SIZE FOR KIDS' HANDS】19 unique dinosaur figurines with vibrant colors, size is 3-7 inch. Fun and educational for both boys and girls. Kids 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!
- ★【STEM TOYS & DEVELOP SKILLS】:Fun and educational for both boys and girls. Kids dinosaur toys are great for home school, as part of a science project at school. The simple and fun game can enhance new vocabulary, language skills and hand-eye coordination through imaginative play. Great for pretend play with friends and family! Or even for taking with you on road trips! Kids will love these dino figures!
- ★【IMAGINATIVE PLAY】:The realistic dino figurines toys 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 prehistoric jurassic dinosaur.
- ★【IDEAL GIFT FOR CHILDREN】:The E EAKSON dino figures toys are great gift for Holidays, Children's Day, Christmas, New Year, stocking stuffers, dinosaur party favors, birthday party, educational toys and so on.
Click here for more information |
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weilaga
 | Lowest New Price: $13.89* In Stock* *(As of 23:31 Pacific 29 Nov 2023 More Info)
Click Here | Description: weilaga 12Pack Educational Realistic Dinosaur Figure Toys for Toddler 6'' to 7" Large Size Dinosaur Playset Gift for Kids, Boys, and Girls Children's Birthday Favors- Manufacturer: weilaga
- Brand: weilaga
- PartNumber: Z-031
Features:- REALISTIC TOY DINOSAUR FIGURES: Includes 12 pieces realistic dinosaur figures -Pachycephalosaurus,Ceratopsian,Paraceleosaur,Ceratosaurus,Nail Dragon,Diplodocus,Raptor,Stegosaurus,Double Crowned Dragon,Ridgeback,Amagaron,Tyrannosaurus
- LARGE SIZE DINOSAUE TOY SET: 12pcs 6-7”dinosaur toys are larger than most of the other’s. This dinosaur figure toy playset introduce your child to the wonderful world of dinosaurs
- HIGH Quality AND SAFETY MATERIAL: The dinosaur toy set made from durable, nontoxic, flexible, long-lasting vinyl .Strong enough to withstand hours of rugged play.
- LEARNING EDUCATIONAL TOYS:Our realistic dinosaur figurines set will allow your child to recognize different types of dinosaurs,and spark your children's imaginative play.
- PERFECT GIFT FOR CHILDREN:The dinosaur toys are great for Christmas gift,stocking stuffers,birthday party games, educational purposes,learning toys,holiday party decoration,party favors or rewards,new year gift.Ideal party or birthday gifts supplies set for a jurassic dinosaur world themed
Click here for more information |
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3 Bees & Me Multi-color Toy (0 pages)
 | List Price: $24.99* Lowest New Price: $18.99* In Stock* *(As of 23:31 Pacific 29 Nov 2023 More Info)
Click Here | Description: 3 Bees & Me Fun Dinosaur Toys for Kids 3-5, 5-7, 8-12 - 12 Large Dino Toy Figures with Storage Box Case - 6 inch Dinosaurs - Dinosaur Toys for Boys, Girls, Toddlers for Imaginative Play- Manufacturer: 3 Bees and Me
- Brand: 3 Bees & Me
- Model: 761780307528
- UPC: 761780307528
- EAN: 0761780307528
- PartNumber: 761780307528
Details:- Product Category: Toy
- Number of Pages: 0
Physical Description:- Size: 7.0 inches by 9.75 inches by 3.0 inches
- Weight: 1.2 pounds
- Color: Multi-color
Features:- Toy Dinosaurs Boys and Girls Love - Searching for a cool birthday party, Christmas or just because gift for that special girl or boy age 3 year old and up? Kids play with this popular dino set for days not just minutes like with some gifts
- Best Value Dinosaur Gift - while most jurassic toy sets just come with the action figures our set comes with a storage box AND fun facts making it a super and affordable value gift; a jurassic toy set you can give with peace of mind.
- Fun and Educational Dinosaur Toys - T-rex, Spinosaurus, Triceratops ... oh my! With 12 of the best big jumbo prehistoric dinasours as well as Names and Fun Facts about each, this real looking dinosaur toy collection pack can ignite your child's love of science and learning.
- Unique Metal Storage Box Makes Play More Fun - unlike other toy playsets that come with just the dinos or a cheap plastic bucket tub that tears our storage carrying case is durable metal which makes play more fun for kids and easy cleanup that Moms like!
- Discover the Fun World of Dinosaurs - with our premium toy dinosaur figure multipack sets! Packed with 12 realistic and detailed dinosaur figurines, this set will ignite your child's imagination and provide hours of thrilling prehistoric play.
Click here for more information |
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Boley 18 Pack Toy
 | Lowest New Price: $15.99* In Stock* *(As of 23:31 Pacific 29 Nov 2023 More Info)
Click Here | Description: Boley 18 Pack 4" Dinosaur Toy Set - The Gosnell Model - Educational Dinosaur Toy and Mammoth Action Figure Playset for Kids - Great As Dinosaur Toys and Birthday Party Favors! - Ages 3 and Up!- Manufacturer: Boley
- Brand: Boley
- Model: 1251A
- UPC: 084495533342
- EAN: 0084495533342
- PartNumber: 1251A
Details:Physical Description:- Weight: 1.13317602668 pounds
- Color: 18 Pack
Features:- WHAT'S INSIDE: Boley's 18 Pack Authentic Dinosaur Set includes 18 realistic and detailed dinosaur and mammoth action figurines! All of our plastic dinosaurs are durable enough to withstand repeated play yet small enough for little boys and girls.
- PERFECT FOR GROWING MINDS: Every creature in our playset has it's name printed on the belly for your child to practice and learn. Boost your child's vocabulary development and understanding of the prehistoric world!
- SAFE AND CHILD FRIENDLY: At Boley, child safety is our highest priority. That's why our entire production process is rigorously monitored by the most reputable organizations of child safety standards, including ASTM, Sedex, ICTI Care, and more.
- LOOKING FOR MORE?: Check out our Boley store here on Amazon for an exciting and diverse array of children's educational toys. From dollhouses to dinosaurs, Boley is where the action is!
Click here for more information |
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Safari Ltd. Toy
 | Lowest New Price: $29.99* In Stock* *(As of 23:31 Pacific 29 Nov 2023 More Info)
Click Here | Description: Safari Ltd. Edmontosaurus Dinosaur Figurine - Detailed 10.5" Plastic Model Figure - Fun Educational Dinosaur Play Toy for Boys, Girls & Kids Ages 3+- Manufacturer: Safari Ltd.
- Brand: Safari Ltd.
- Model: 100358
- UPC: 095866004262
- EAN: 0095866004262
- PartNumber: 100358
Details:Physical Description:- Size: 3.7401574765 inches by 10.3149606194 inches by 2.5984251942 inches
- Weight: 0.57099725858 Pounds
Features:- Detailed Design: This Edmontosaurus figure showcases the unique characteristics of this "duck-billed dinosaur", including the rooster-like comb on its head, sculpted and hand-painted based on the latest scientific discoveries.
- Educational and Engaging: Perfect for learning about the late Cretaceous Period and the fascinating world of hadrosaurs, this figure encourages curiosity, imaginative play, and appreciation for paleontology.
- Safe and Superior Quality: Crafted with quality, non-toxic, BPA-free PVC, the Edmontosaurus toy is durable and safe for children ages 3+.
- Dimensions: Measuring 10 ½ inches in length and just under 4 inches tall, this Edmontosaurus figure offers a substantial presence, roughly the size of a standard piece of paper cut in half length-wise.
- Perfect Gift: A wonderful gift for dinosaur enthusiasts, history buffs, collectors, or anyone looking for an engaging and scientifically accurate model. Ideal for both play and educational purposes.
Click here for more information |
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Schleich Multi Toy
 | Lowest New Price: $24.99* In Stock* *(As of 23:31 Pacific 29 Nov 2023 More Info)
Click Here | Description: Schleich Dinosaurs Realistic Edmontosaurus Dino Figurine - King Size Prehistoric World Realistic Dinosaur Action Figure, Large Creature Jurassic Planet Toy for Boys and Girls, Gift for Kids Age 4+- Manufacturer: Schleich
- Brand: Schleich
- Model: 15037
- EAN: 4059433637815
- PartNumber: 15037
Details:Physical Description:- Size: 4.6 Inches by 11.7 Inches by 11.7 Inches
- Weight: 0.00110231131 Pounds
- Color: Multi
Features:- EXPERIENCE EXCITING PREHISTORIC FUN - Schleich's Edmontosaurus, a realistic dinosaur toy, is designed to resemble the actual creature, perfect for a Jurassic park themed play world.
- A TRULY POWERFUL PLAYING EXPERIENCE - Feel the superior craftsmanship and product quality of this dinosaur toy, a perfect addition to your kid's Jurassic collection.
- THE PERFECT GIFT FOR KIDS OF ALL AGES - This beautifully detailed dinosaur toy can transport your kids to a prehistoric world of imagination, making it a great addition to their dinosaur collection.
- GENERATIONS OF IMAGINATION FOR KIDS OF ALL AGES - Long-lasting, super durable and highly detailed toys from Schleich are the perfect way to ignite your child's imagination and fun. With a huge catalog of fairies, monsters, characters, dinosaurs and animals across a variety of playsets and figurines, you can be sure that your child will experience all the magic and wonder of childhood while making memories for years to come.
- WHERE STORIES BEGIN - Our characters come in a million gazillion shapes, sizes, and colors. Whether they have two legs, four legs, or no legs, they have one thing in common – every toy in our collection is authentic, detailed and high quality.
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