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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 CAMILLE JENKINS
Independently published
Released: September 23rd, 2020
Paperback (58 pages)
 | Lowest New Price: $7.14*
In Stock*
*(As of 08:19 Pacific 23 Apr 2025 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 Rob Shone
PowerKids Press
Released: August 30th, 2009
Library Binding (32 pages)
 | Lowest New Price: $30.27*
In Stock*
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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 Darlene R. Stille
Rourke Pub Group
Released: January 1st, 2007
Paperback (24 pages)
 | Lowest Used Price: $13.33*
In stock Usually ships within 3 to 4 days.*
*(As of 08:19 Pacific 23 Apr 2025 More Info)
Click Here | Description:
Hadrosaurus- Manufacturer: Rourke Pub Group
- ISBN: 1600443346
- EAN: 9781600443343
Details:- Paperback
- Number of Pages: 24
- Author: Darlene R. Stille
- Publication Date: January 1st, 2007
- Release Date: January 1st, 2007
Physical Description:- Size: 10.5 inches by 7.75 inches by 0.25 inches
- Weight: 0.2 pounds
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 08:19 Pacific 23 Apr 2025 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
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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.
Generic
 | Lowest New Price: $7.99*
In Stock*
*(As of 08:19 Pacific 23 Apr 2025 More Info)
Click Here | Description:
Dinosaur Miniatures for DND Pathfinder RPG Unpainted Resin 28mm-32mm 3D Printed (Hadrosaurus - 2" - Large)Features:- High-Quality Resin: Our miniatures are expertly 3D printed using premium resin material, ensuring durability and intricate details that truly capture the essence of Dinosaurs.
- Perfect for RPGs: Whether you’re a player or a dungeon master, these resin 3D printed miniatures add depth and immersion to your tabletop adventures, making encounters with Dinosaurs even more thrilling.
- Intricate Details: Every miniature is designed with meticulous attention to detail, showcasing the unique characteristics and features of each Dinosaur type.
- Paintable Surface: The smooth surface of our resin miniatures allows for easy painting, enabling you to customize and personalize your Dinosaur figures according to your preferences.
- Check out all of our 3D printed handmade DND miniatures at our Amazon Handmade Storefront: https://www.amazon.com/stores/page/250808B5-6DEC-475D-A864-0D109D8ACEE9
Click here for more information |
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OuMuaMua
Yellow Toy
 | Lowest New Price: $12.99*
In Stock*
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Click Here | Description:
OuMuaMua Dinosaur Toys, Plastic Dinosaur Figure Set, Ideal Education Toys for Kids and Toddler, Including T-Rex, Stegosaurus, Monoclonius, 6 to 7 Inch Large Size, 6 Pack- Manufacturer: 6 Dinosaur
- Brand: OuMuaMua
- PartNumber: B07VYPDFJ7
Details:Physical Description:- Size: 6.0 inches by 6.0 inches by 6.0 inches
- Weight: 0.54895103238 pounds
- Color: Yellow
Features:- REALISTIC DINOSAUR FIGURES: These large size realistic dinosaur figures will spark hours of imaginative play for children. Dinosaur species including T-rex, Stegosaurus, Monoclonius, Acanthosis, Ceratosaurus, and Brachiosaurus, are durable enough to be used indoors or out. Different species of dinosaurs in various poses will provide you with a realistic experience
- DURABILITY DINOSAUR TOYS: The unique dinosaur toy set with vibrant colors is made from durable, flexible, long-lasting vinyl. All dinosaurs are hand-painted with full details. Their uniquely textures and richly painted details bring them to life and help inspire creativity in kids
- LARGE SIZE DINOSAUR FIGURES: 6pcs set of dinosaur toys are approximately 6 - 7 inches in length, larger than most of the other similar toys. Kids will enjoy playing with these realistic-looking dinosaurs. It’s funny and educational for both boys and girls
- PERFECT GIFT FOR KIDS: Are you looking for a perfect gift for your kids? Our dinosaur figure set will be a unique gift idea. The dinosaur toys are great as birthday cake toppers, dinosaur theme party toys, dinosaur show decorations, bath toys, educational purposes, learning toys or rewards, Christmas gifts or party favors
- SHOP WITH CONFIDENCE: We strive to offer top-notch products and unparalleled service. Should you have any issues or questions, please reach out to us.
Click here for more information |
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Mattel
Multicolor Toy
 | Lowest New Price: $21.95*
In Stock*
*(As of 08:19 Pacific 23 Apr 2025 More Info)
Click Here | Description:
Mattel Jurassic World Dominion Roar Strikers Dinosaur Action Figure with Roaring Sound & Attack Action, Ankylosaurus Dino Toy Includes Digital Play- Manufacturer: Mattel
- Brand: Mattel
- Model: HDX36
- UPC: 194735034048
- EAN: 0194735034048
- PartNumber: HDX36
Details: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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Lana Toys
 | Lowest New Price: $42.99*
Usually ships within 2 to 3 weeks*
*(As of 08:19 Pacific 23 Apr 2025 More Info)
Click Here | Description:
Lana Toys Parasaurolophus Wyatt Figure Realistic Hadrosauridae Dinosaur PVC Animal Model Decoration Gift- Manufacturer: Lana Toys
- Brand: Lana Toys
- Model: 0782913274869
- UPC: 782913274869
- EAN: 0782913274869
- PartNumber: 782913273077
Physical Description:- Size: 1.0 inches by 1.0 inches by 1.0 inches
- Color: 44 Wyatt the Parasaurolophus
Features:- ??Size? Parasaurolophus: 10.9" L(276mm) x 2.4" W(60mm) x 4.3" H(110mm), Original Box: 12.2" L(309mm) x 2.4" W(60mm) x 5.4" H(138mm)
- ??Package Include? 1 x Parasaurolophus Figure, 1 x Original Box
- ??Feature? Hadrosaurs Dinosaur, Animal Decor, Collector
- ??Material? Made of PVC, Safe and Eco-friendly.
- ??Detail? High detailed and Beautifully Finished.
Click here for more information |
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PNSO
Doyle the Triceratops 1:35 Scientific Art Model Toy
 | Lowest New Price: $59.99*
In Stock*
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Click Here | Description:
PNSO Dinosaur Museums Series (New ER-MA The Mamenchisaurus 1:45 Scientific Art Model)- Manufacturer: PNSO
- Brand: PNSO
- Model: PNSO
- EAN: 6974180730474
- PartNumber: PNSO
Details:- Product Category: Toy
- Edition: New ER-MA The Mamenchisaurus 1:45 Scientific Art Model
Physical Description:- Size: 0.00393700787 Inches by 18.897637776 Inches by 5.511811018 Inches
- Weight: 2.20462262 pounds
- Color: Doyle the Triceratops 1:35 Scientific Art Model
Features:- ?Scientifically Accurate Figurines?The dinosaur models are reconstructed by using both science and art method. Bring life back to the most amazing animals once inhabited on Earth?
- ?Impressive Level of Details?This 1:35 Sci-art Model with exciting pose, an articulation jaw and lifelike paint job captures this animal’s personality. Durable and eco-friendly materials used, the engaging model inspires imaginative play and drama creation.
- ?Additional Educational Support?The ancillary informative manual, exhibition-level posters and online educational videos, including model-creating story and how-to-draw-dinosaur videos, help to know science knowledge while learning drawing techniques. It is not only a perfect gift for dinosaur lovers, but also suitable for families, educational organizations/institutes.
- ?Diversity of Species?PNSO will constantly research and develop the variety of models including some rarely seen species which can feed the sustained passion for prehistoric animals, and provide more play combinations and scene matching.
- ?Artworks of ZHAO Chuang & Yang Yang?Mr. ZHAO Chuang, a scientific artist, designed all the model prototypes, illustrated the posters and narrated all the videos. Ms. YANG Yang, a science writer for children, wrote all the words. As the preferred copyright partner for museums, scientists and publishers around the world, more and more published PNSO books will enrich furthering reading.
Click here for more information |
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Mattel
No Color Toy
 | List Price: $18.99*
Lowest New Price: $17.99*
In Stock*
*(As of 08:19 Pacific 23 Apr 2025 More Info)
Click Here | Description:
Mattel Jurassic World Wild Roar Dinosaur Toy with Sound & Attack Move, Nigersaurus Posable Action Figure Includes Digital Play, 11 inches Long- Manufacturer: Mattel
- Brand: Mattel
- Model: HLP20
- UPC: 194735116300
- EAN: 0194735116300
- PartNumber: HLP20
Details:Physical Description:- Size: 4.9213 inches by 2.874 inches by 13.3858 inches
- Weight: 0.86 Pounds
- Color: No Color
Features:- Roar and Attack! Jurassic World Wild Roar figures have ROARING sounds and an ATTACK motion.
- Species-specific attack actions! Attack motions range from surprise tail whips to neck-stretching chomps and head butts, for realistic battle play. Just press down on the hip area to activate.
- Great gift! Each action figure is about 5 inches tall and 11 inches long and makes an exciting gift for dinosaur fans 4 years and older. Each figure sold separately, subject to availability
- Connected play! Scan the dinosaur's hidden Tracking Code in the free Jurassic World Play App with a compatible smart device (not included) for Augmented Reality activities and fiercely fun games!
- Racing games and more! Motocross turns into wild destruction when the rider and motorcycle transform into a rampaging dinosaur knocking over obstacles and causing havoc!
Click here for more information |
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Boley
Assorted Toy
 | List Price: $24.99*
Lowest New Price: $17.95*
*(As of 08:19 Pacific 23 Apr 2025 More Info)
Click Here | Description:
Boley 12 Pack 9-Inch Educational Dinosaur Toys - Kids Realistic Toy Dinosaur Figures for Cool Kids and Toddler Education! (T-Rex, Triceratops, Velociraptor, and More!)- Manufacturer: Boley
- Brand: Boley
- Model: 084495500023
- UPC: 084495500023
- EAN: 0084495500023
- PartNumber: 084495500023
Details:Physical Description:- Size: 4.0 Inches by 9.0 Inches by 2.5 Inches
- Weight: 0.15 pounds
- Color: Assorted
Features:- DURABILITY: 12 unique dinosaur with vibrant colors. Made from durable, flexible, long-lasting vinyl Kids will enjoy hours of Imaginative Play with realistic-looking dinosaurs. Fun and educational for both boys and girls alike. Just right for a school / science project or report.
- MATERIAL: Introduce your child to the wonderful world of dinosaurs, and turn their little world into Jurassic period with these realistic dinosaurs! Made from durable,nontoxic, bpa free high-quality plastic, strong enough to withstand hours of rugged play.
- IMAGINATIVE PLAY: These large realistic dinosaur figures will spark hours of imaginative play. Durable enough to be used indoors or out, their uniquely molded textures and richly painted details bring them to life and help inspire creativity for kids.
- MEASUREMENT: A dino lovers delight! Large 9" Dinos. Travel through time with realistically detailed dinosaur friends that inspire imaginative play and curiosity about science and history.
- GIFT: Fun dino toys tested and approved by real kids. Great for stocking stuffers, party favors, birthday party games, educational purposes, party decoration, party favors, handouts or rewards. Ideal party favor or gift for a dinosaur themed birthday party.
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