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Pachycephalosaurus
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Pachycephalosaurus was a herbivore (plant-eating) dinosaur that
lived during the late Cretaceous period,
about 76 to 65 million years ago,
in North America.
It was one of the dinosaurs that died out in the Cretaceous-Tertiary
extinction,
65 million years ago.
The name Pachycephalosaurus means "thick-headed lizard",
and describes the creature's most noteworthy feature:
the huge 10 inch (25 centimeter) thick
bone dome on its head. At the rear of the dome were a number of bony knobs,
and the animal's snout also possessed several short bony spikes.
This has led most scientists to conclude that the animal was probably
related to the
Ceratopsians
(which include
Protoceratops,
Psittacosaurus,
Styracosaurus
and
Triceratops),
although unlike most
Ceratopsians,
Pachycephalosaurus is believed to have been bipedal.
It was once thought that Pachycephalosaurus would have used the dome
on its head either to engage in butting contests for mates (similar to
modern big-horned sheep), or to defend against predators. However,
it is now believed that this could not have been the case:
the head bones do not appear to be strong enough for such impacts,
the skulls lack shock absorbing features, and there no evidence of
scars or other damage have been found on
fossilized
Pachycephalosaurus skulls.
Another somewhat unusual feature of Pachycephalosaurus is its teeth.
The animal had very small ridged teeth which would have been
far less capable of chewing tough, fibrous plant material than
other herbivorous dinosaurs of the late Cretaceous. It is therefore
thought that perhaps Pachycephalosaurus lived on a diet of
leaves, seeds, fruit and perhaps insects.
So far, only the skull of Pachycephalosaurus has been discovered.
Scientists estimate that the fully grown creature was 15 feet (4.6 meters) long,
and weighed about 950 pounds (430 kilograms).
They have come up with these figures by examining
the skull and extrapolating the likely size on the creature based on
the head-to-body ratios of its close relatives.
Pachycephalosaurus Timeline:
Pachycephalosaurus was a herbivore (plant-eater) that lived from 76 to 65 million years ago
Related Information & Resources
Related Web Sites
See Also
Pachycephalosaurus Facts
Here is a summary of some of the key facts about Pachycephalosaurus:
- Pachycephalosaurus was a genus of dinosaur.
- "Pachycephalosaurus" means "thick-headed lizard". This name was chosen by Barnum Brown and Erich Maren Schlaikjer in 1943.
- Pachycephalosaurus was a member of the Ornithischia ("bird-hipped") order of dinosaurs. What this means, is that although Pachycephalosaurus was not closely related to birds, it did have similarly shaped pelvic bones.
- Pachycephalosaurus was a Pachycephalosaur - a member of a group of related herbivorous (plant-eating) dinosaurs with bony domes on their heads.
- Pachycephalosaurus lived between about 76 million years ago and 65 million years ago, during the late Cretaceous period.
- Pachycephalosaurus was one of the dinosaurs which died out during the Cretaceous-Tertiary mass extinction at the end of the Mesozoic Era.
- Pachycephalosaurus lived in North America.
- Pachycephalosaurus was a herbivore (plant-eater).
- Pachycephalosaurus was about 15 feet (4.6 meters) long.
- Pachycephalosaurus weighed about 950 pounds (430 kilograms).
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Pachycephalosaurus 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 Enrique Fiesta
Createspace Independent Publishing Platform
Released: January 23rd, 2015
Paperback (54 pages)
 | Lowest New Price: $11.99*
In Stock*
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Click Here | Description:
Pachycephalosaurus - Thick-Headed Lizard- Manufacturer: CreateSpace Independent Publishing Platform
- Brand: Createspace Independent Publishing Platform
- ISBN: 1507686900
- EAN: 9781507686904
- PartNumber: colour illustrations
Details:- Paperback
- Number of Pages: 54
- Authors: Enrique Fiesta, John Davidson
- Publication Date: January 23rd, 2015
- Release Date: January 23rd, 2015
Physical Description:- Size: 9.0 Inches by 6.0 Inches by 0.13 Inches
- Weight: 0.19 Pounds
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By Janet Riehecky
The Childs World Inc
Library Binding
 | List Price: $21.36*
Lowest Used Price: $5.60*
In stock Usually ships within 3 to 4 days.*
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Click Here | Description:
Pachycephalosaurus : Dinosaurs Series- Manufacturer: The Childs World Inc
- ISBN: 0895656329
- EAN: 9780895656322
Details:- Product Category: Library Binding
- Author: Janet Riehecky
Physical Description:- Size: 10.5 Inches by 8.5 Inches by 0.5 Inches
- Weight: 0.66 Pounds
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By Rebecca Sabelko
Epic
Released: August 1st, 2023
Library Binding (24 pages)
 | Lowest New Price: $26.95*
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.*
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Click Here | Description:
Pachycephalosaurus (World of Dinosaurs)- Manufacturer: Epic
- EAN: 9798886875041
Details:- Product Category: Library Binding
- Number of Pages: 24
- Author: Rebecca Sabelko
- Publication Date: August 1st, 2023
- Release Date: August 1st, 2023
Physical Description:- Size: 9.15 Inches by 7.79 Inches by 0.28 Inches
- Weight: 0.56 Pounds
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By Daniel Cohen
Brand: Bridgestone Books
Released: January 1st, 2003
Library Binding (24 pages)
 | List Price: $23.32*
Lowest Used Price: $10.10*
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Click Here | Description:
Pachycephalosaurus (Discovering Dinosaurs)- Manufacturer: Bridgestone Books
- Brand: Brand: Bridgestone Books
- ISBN: 0736825231
- EAN: 9780736825238
Details:- Product Category: Library Binding
- Number of Pages: 24
- Author: Daniel Cohen
- Publication Date: January 1st, 2003
- Release Date: January 1st, 2003
Physical Description:- Size: 8.0 Inches by 8.0 Inches by 0.25 Inches
- Weight: 0.45 Pounds
Features:- Used Book in Good Condition
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By Fabio Marco
Blackbirch
Released: April 6th, 2007
Hardcover (32 pages)
 | List Price: $25.65*
Lowest Used Price: $10.45*
In Stock*
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Click Here | Description:
Pachycephalosaurus (Dinosaur Profiles)- Manufacturer: Blackbirch
- ISBN: 1410307417
- EAN: 9781410307415
Details:- Hardcover
- Number of Pages: 32
- Authors: Fabio Marco, Dalla Vecchia
- Publication Date: April 6th, 2007
- Release Date: April 6th, 2007
Physical Description:- Size: 9.0 Inches by 8.5 Inches by 0.25 Inches
- Weight: 0.65 Pounds
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By Frances Swann
Brand: Rourke Pub Group
Library Binding (24 pages)
 | List Price: $21.93*
Lowest Used Price: $20.58*
In Stock*
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Click Here | Description:
Pachycephalosaurus (Dinosaur Library)- Manufacturer: Rourke Pub Group
- Brand: Brand: Rourke Pub Group
- ISBN: 0865925267
- EAN: 9780865925267
Details:- Product Category: Library Binding
- Number of Pages: 24
- Author: Frances Swann
Physical Description:- Size: 10.75 Inches by 7.75 Inches by 0.5 Inches
- Weight: 0.65 Pounds
Features:- Used Book in Good Condition
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By Michael P. Goecke
Buddy Books
Released: January 1st, 2007
Library Binding (32 pages)
 | List Price: $27.07*
Lowest New Price: $18.00*
In Stock*
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Click Here | Description:
Pachycephalosaurus (Dinosaurs Set 4)- Manufacturer: Buddy Books
- ISBN: 1599286998
- EAN: 9781599286990
Details:- Product Category: Library Binding
- Number of Pages: 32
- Author: Michael P. Goecke
- Publication Date: January 1st, 2007
- Release Date: January 1st, 2007
Physical Description:- Size: 8.5 Inches by 7.5 Inches by 0.5 Inches
- Weight: 0.51 Pounds
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Pachycephalosaurus 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
Multicolor Toy
 | Lowest New Price: $14.85*
In Stock*
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Click Here | Description:
Mattel Jurassic World the Lost World Hammond Collection Dinosaur Action Figure, Pachycephalosaurus with Articulation, 3.75-in Tall- Manufacturer: Mattel
- Brand: Mattel
- Model: HLT50
- UPC: 194735118724
- EAN: 0194735118724
- PartNumber: HLT50
Details:Physical Description:- Size: 3.9488 Inches by 6.7992 Inches by 1.6496 Inches
- Weight: 0.0440924524 Pounds
- Color: Multicolor
Features:- Collector dinosaurs! This Pachycephalosaurus dinosaur figure from The Lost World: Jurassic Park is part of The Hammond Collection which has created a new standard for highly detailed and articulated figures.
- Celebrate Jurassic Park's 30th Anniversary! It's been 30 years since the premiere of the franchise in 1993. Special themed packaging includes the 30thAnniversary logo.
- Authentic design. The 7.2-inch long figure of the Pachycephalosaurus from the second film in the franchise is movie-accurate and designed at 3.75-inch human figure scale, ready to dominate any display.
- Deluxe articulation! This dinosaur figure has 14 movable joints for ultimate posability.
- Premium collectability. This Pachycephalosaurus is ready to pose next to human and other dinosaur figures in The Hammond Collection. Each figure sold separately and subject to availability.
- Great gift! Recommended for 8 years and older, this figure will thrill Jurassic World fans and dinosaur collectors.
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Schleich
Multi Accessory
 | Lowest New Price: $22.35*
In Stock*
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Schleich Dinosaurs, Realistic Dinosaur Toys for Boys and Girls Pachycephalosaurus Toy Figurine, Ages 4+- Manufacturer: Schleich
- Brand: Schleich
- Model: 15024
- EAN: 4059433276878
- PartNumber: 15024
Details:- Product Category: Accessory
Physical Description:- Size: 4.3 inches by 8.5 inches by 8.5 inches
- Weight: 0.25 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.
- HEALTHY IMAGINATIVE PLAY. The Pachycephalosaurus 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 Pachycephalosaurus 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.
- 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 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
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AULUDA
 | Lowest New Price: $29.99*
In Stock*
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Pachycephalosaurus Plush Toy, 17" Dinosaur Stuffed Animal Throw Plushie Pillow Doll, Soft Blue Fluffy Friend Hugging Cushion - Present for Every Age & Occasion- Manufacturer: AULUDA
- Brand: AULUDA
- Model: ald-dino-01aw
- PartNumber: AULUDA-Dinosaur World-01
Physical Description:- Size: 10.0 Inches by 5.0 Inches by 5.0 Inches
- Weight: 0.50926782522 Pounds
- Color: Pachycephalosaurus 17”
Features:- ?Comfortable Companion: Dinosaur (Pachycephalosaurus) hug toy presents a super soft, cute & adorable build that is comfortable to hug during sleep. Kids, teens & adults love these classic & collectible comfy critters.
- ?Premium Materials: Made of top quality plush fabrics simulate real fur. Feather soft PP cotton filler stuff in this fully dressed animal plush toy. High quality inner stuffing is really comfortable to hold and support your resting body around it. The Dinosaur doll looks like a peel banana is so huggable.
- ?Best Gift: Lovely design, amazingly unique, cute and realistic plush dino doll look, cannot find anywhere else. Children and adults of all ages will love this cartoon plushie toy to play with & as a hug plush for reading, watching television, studying, and sleepy nap time.
- ?Length: 17" (43 cm) long in full of softness and able to tangle. Fully cover in soft plush ready to play and ready to be lean and sit on.
- ?Suitable: Great gift for bedroom, nursery, living room, family, office, playground, unique animal jungle park zoo theme decoration center piece for birthday, Halloween, Christmas or any other holiday.
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Gemini&Genius
 | Lowest New Price: $16.99*
In Stock*
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Click Here | Description:
Gemini&Genius Dinosaur Toys Pachycephalosaurus Action Figure Stygimoloch Cretaceous Dinosaur World Figurine Gift, Collection, Cake Topper, Role-Play, Storytelling Props, Room Decoration for Kids- Manufacturer: Shenzhen Gemini Technology LTD.
- Brand: Gemini&Genius
- PartNumber: Dinosaur Figure Set -1
Physical Description:- Color: Pachycephalosaurus
Features:- ?Experience the Dinosaur World?Our dinosaur figures are made by hand painted with high detailed appearance. Their uniquely molded textures and richly painted details make the dinosaurs vivid.
- ?Develop Dexterity and Spark the Imagination?We encourage your kids to use their imagination to create their own magical kingdom. The toys will help to develop their skills while enjoying hours of imaginative play in great planet's history.
- ?Great Details?The dino toys can Display Or Play with amazing detail, realistic, educational, and fun, this figurine is suitable for a range of interests, including collectors, teachers, and kids. Another special characteristic of this figure is the care in the details and postures, which gives the impression that the figurines are animated.
- ?Durable and Safe?This figure is made of a-piece design with durable ABS material which is safe and eco-friendly and children-friendly. This is the most durable design as you can imagine, when your children grow up, these toys are still fine and become valuable collectibles.
- ?Awesome Gifts?Such cute & different varieties of dinosaur figures are worthy to be collected, for decorating children's bookcase, desk and room. They are awesome birthday gifts or prizes for kids, also they would be good ideas to use as the cake toppers and make a dinosaur theme cake for your children. They would love that so much.
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Flormoon
 | Lowest New Price: $17.01*
In Stock*
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Click Here | Description:
FLORMOON Dinosaur Toys Realistic Pachycephalosaurus Action Model Science Project, Learning Educational Toys, Birthday Gift, Cake Topper for Kids- Manufacturer: FLORMOON
- Brand: Flormoon
- UPC: 721703712891
- EAN: 0721703712891
- PartNumber: FLM-11755-1004
Features:- Safety Material - Our Animal Figurines Playset Was Made of High Quality Durable Abs Plastic, Non-toxic Paint and Odorless. All by Safety Meterials for Kids.
- Great Gift for Kids Age 3 and Up - It's an Awesome Animal Toy, Birthday Gift or Prize for Kids and Great Action Figures to Play with and Also Look Great As Kid's Room Decoration. They Are Worth to Be Collected, Decorating Children's Bookcase and Desk.
- Early Educational Toys - These Animal Payset Are Great For Education Purposes, Creative Play, Party Favors And Crafts. It Will Help To Improve Children's Concentration And Outsight, Develop And Train Their Imagination And Creativity.
- Realistic Appearance - Our Animal Toys Was Made By Hand Painted With High Realistically Detailed Appearance, Cute Face And Childish Eyes. Their Uniquely Molded Textures And Richly Painted Details Make The Animals Vivid.
- Long Term Warranty - Animal Figures Has 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!
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Safari Ltd.
Toy
 | Lowest New Price: $21.99*
In Stock*
*(As of 07:43 Pacific 29 Nov 2023 More Info)
Click Here | Description:
Safari Ltd. Pachycephalosaurus Figurine - Detailed 8" Plastic Model Figure - Fun Educational Dinosaur Play Toy for Boys, Girls & Kids Ages 3+- Manufacturer: Safari Ltd.
- Brand: Safari Ltd.
- Model: 100350
- UPC: 095866004118
- EAN: 0095866004118
- PartNumber: 100350
Details:Physical Description:- Size: 4.0157480274 Inches by 8.1102362122 Inches by 2.6377952729 Inches
- Weight: 0.220462262 Pounds
Features:- Detailed Design: This Pachycephalosaurus figure showcases its distinctive domed skull and bony knobs, including an injury detail from combat. It's an authentic representation of this Late Cretaceous Period dinosaur.
- Educational and Engaging: Providing a glimpse into the world of prehistoric creatures, this figure encourages curiosity about paleontology and fosters imaginative play. It's a wonderful tool to learn about the life and behaviors of Pachycephalosaurus.
- Safe and Superior Quality: Made from durable, non-toxic, BPA-free PVC, this hand-painted model is safe for children aged 3+ and is built to last through endless adventures.
- Dimensions: Measuring 8 inches long and 3 ¾ inches tall, this figure is about the size of a pair of scissors, perfect for hands-on exploration.
- Perfect Gift: Ideal for dinosaur enthusiasts, educators, collectors, or kids who love prehistoric adventures, this Pachycephalosaurus makes a fantastic gift.
Click here for more information |
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Mattel
Multi Toy
 | Lowest New Price: $53.97*
In Stock*
*(As of 07:43 Pacific 29 Nov 2023 More Info)
Click Here | Description:
Jurassic World Toys Savage Strike Pachycephalosaurus Figure in Smaller Size with Unique Attack Moves Like Biting, Head Ramming, Wing Flapping, Articulation and More- Manufacturer: Mattel
- Brand: Mattel
- Model: GKG13
- UPC: 887961825725
- EAN: 0887961825725
- PartNumber: GKG13
Details:Physical Description:- Size: 4.72 Inches by 1.97 Inches by 6.69 Inches
- Color: Multi
Features:- Play out the ultimate in dinosaur rivalry and battle with Jurassic World Savage Strike dinosaur action figures!
- Featured in a smaller size but packing a Savage Strike, these dinosaur action figures have an attack move iconic to their respective species.
- Use Savage Strike attack moves like biting, head ramming, wing flapping and more to play out movie action scenes!
- Each dinosaur action figure is activated by pressing an area on the body to create a Savage Strike move (varies per dinosaur).
- These fierce dinosaur action figures feature articulated arms and legs, realistic sculpting and authentic decoration capturing all the excitement of the movie. Battle it out—Savage Strike style—with these fierce action figures!
- Includes informative Dino Rivals collector card for each dinosaur with key battle stats and attributes.
- Download the Jurassic World Facts app (Android and iOS) for more dinosaur fun! App lets you scan your dinosaurs and watch them come to life, learn attack facts, compare stats and more!
Click here for more information |
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Jurassic World Toys
Toy
 | List Price: $68.22*
Lowest New Price: $42.69*
In Stock*
*(As of 07:43 Pacific 29 Nov 2023 More Info)
Click Here | Description:
Jurassic World Battle Damage Pachycephalosaurus Figure- Manufacturer: Mattel
- Brand: Jurassic World Toys
- Model: FTK70
- UPCs: 887961645866, 767344542268
- EANs: 0767344542268, 0887961645866
- PartNumber: FTK70
Details:Physical Description:- Size: 6.5 Inches by 2.25 Inches by 8.0 inches
- Weight: 0.3086471668 Pounds
Features:- Get ready for thrilling action and adventure with Jurassic World!
- These Battle Damage dinosaur action figures have a spring-loaded damage panel feature that snaps back on impact to reveal the battle wound!
- Boys will love battling it out again and again and seeing the gory results
- Just reset the Battle Damage action figure to play out favorite action battles from the movie again and again!
- Great gift for Jurassic World fans!
Click here for more information |
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Mattel
Multi Toy
 | Lowest New Price: $79.99*
In Stock*
*(As of 07:43 Pacific 29 Nov 2023 More Info)
Click Here | Description:
JURASSIC WORLD SAVAGE STRIKE Pachycephalosaurus- Manufacturer: Mattel
- Brand: Mattel
- Model: GFG64
- UPC: 887961761481
- EAN: 0887961761481
- PartNumber: GFG64
Details:Physical Description:- Size: 4.0 inches by 2.748 inches by 7.748 inches
- Weight: 0.3747858454 Pounds
- Color: Multi
Features:- Play out the ultimate in dinosaur rivalry and battle with Jurassic World Savage Strike dinosaur action figures!
- Featured in a smaller size but packing a Savage Strike, these dinosaur action figures have an attack move iconic to their respective species.
- Use Savage Strike attack moves like biting, head ramming, wing flapping and more to play out movie action scenes!
- Each dinosaur action figure is activated by pressing an area on the body to create a Savage Strike move (varies per dinosaur).
- These fierce dinosaur action figures feature articulated arms and legs, realistic sculpting and authentic decoration capturing all the excitement of the movie. Battle it out—Savage Strike style—with these fierce action figures!
- Includes informative Dino Rivals collector card for each dinosaur with key battle stats and attributes
- Download the Jurassic World Facts app (Android and iOS) for more dinosaur fun! App lets you scan your dinosaurs and watch them come to life, learn attack facts, compare stats and more!
Click here for more information |
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