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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
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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 Rob Shone
PowerKids Press Released: August 30th, 2011 Library Binding (32 pages)
 | Lowest New Price: $30.27* In Stock* *(As of 15:42 Pacific 13 Feb 2025 More Info)
Click Here | Description: Pachycephalosaurus: The Thick-Headed Lizard (Graphic Dinosaurs)- Manufacturer: Powerkids Pr
- Brand: PowerKids Press
- ISBN: 1448852528
- EAN: 9781448852529
Details:- Product Category: Library Binding
- Number of Pages: 32
- Author: Rob Shone
- Publication Date: August 30th, 2011
- Release Date: August 30th, 2011
Physical Description:- Size: 11.25 inches by 9.5 inches by 0.25 inches
- Weight: 0.85 pounds
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By Enrique Fiesta
CREATESPACE Released: January 23rd, 2015 Paperback (54 pages)
 | Lowest New Price: $11.99* In Stock* *(As of 15:42 Pacific 13 Feb 2025 More Info)
Click Here | Description: Pachycephalosaurus - Thick-Headed Lizard- Manufacturer: CreateSpace Independent Publishing Platform
- Brand: CREATESPACE
- 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: 0.18959754532 pounds
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By Janet Riehecky
The Childs World Inc Library Binding
 | List Price: $21.36* Lowest Used Price: $6.70* In Stock* *(As of 15:42 Pacific 13 Feb 2025 More Info)
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: 0.65 Pounds
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By Chase Coffield
Independently published Released: April 14th, 2023 Paperback (30 pages)
 | Lowest New Price: $10.99* In Stock* *(As of 15:42 Pacific 13 Feb 2025 More Info)
Click Here | Description: Boris the Pachycephalosaurus- Manufacturer: Independently published
- EAN: 9798386685348
Details:- Paperback
- Number of Pages: 30
- Author: Chase Coffield
- Publication Date: April 14th, 2023
- Release Date: April 14th, 2023
Physical Description:- Size: 11.0 inches by 8.5 inches by 0.08 inches
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By Virginia Schomp
Cavendish Square Publishing Released: January 30th, 2005 Library Binding (32 pages)
 | Lowest New Price: $32.64* 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 15:42 Pacific 13 Feb 2025 More Info)
Click Here | Description: Pachycephalosaurus: And Other Bone-Headed Plant-Eaters (Prehistoric World)- Manufacturer: Cavendish Square Publishing
- Brand: Cavendish Square Publishing
- ISBN: 0761415424
- EAN: 9780761415428
Details:- Product Category: Library Binding
- Format: Illustrated
- Edition: Illustrated
- Number of Pages: 32
- 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: 0.93916923612 pounds
Features:- Used Book in Good Condition
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By Frances Swann
Brand: Rourke Pub Group Library Binding (24 pages)
 | List Price: $21.93* Lowest Used Price: $8.89* In stock Usually ships within 3 to 4 days.* *(As of 15:42 Pacific 13 Feb 2025 More Info)
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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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.
Schleich Multi Accessory
 | List Price: $19.99* Lowest New Price: $17.04* In Stock* *(As of 15:42 Pacific 13 Feb 2025 More Info)
Click Here | Description: 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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Safari Ltd. Orange/Gray Toy
 | Lowest New Price: $19.99* In Stock* *(As of 15:42 Pacific 13 Feb 2025 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: 3.75 inches by 8.0 inches by 3.75 inches
- Weight: 0.220462262 pounds
- Color: Orange/Gray
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.
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AULUDA
 | List Price: $25.99* Lowest New Price: $21.99* In Stock* *(As of 15:42 Pacific 13 Feb 2025 More Info)
Click Here | Description: 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
- 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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Jurassic World Multicolor Toy
 | Lowest New Price: $18.99* In Stock* *(As of 15:42 Pacific 13 Feb 2025 More Info)
Click Here | Description: JURASSIC WORLD BASIC PLUSH Stygimoloch "Stiggy"- Manufacturer: Mattel
- Brand: Jurassic World
- Model: FMM58
- UPC: 887961577044
- EAN: 0887961577044
- PartNumber: FMM58
Details:Physical Description:- Size: 7.0 inches by 3.0 inches by 4.6181 inches
- Color: Multicolor
Features:- Get ready for thrilling action and adventure with Jurassic World!
- Plush dinosaurs inspired by the movie are ferociously cute and cuddly!
- Made of soft fabric and materials, each dinosaur plush features realistic details like embossed scales, spikes, claws, toe details and more.
- Capture all the action and adventure of the movie and choose from a variety of different dinosaurs!
- Each sold separately, subject to availability.
Click here for more information |
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Mattel Green/Orange Toy
 | Lowest New Price: $53.88* In Stock* *(As of 15:42 Pacific 13 Feb 2025 More Info)
Click Here | Description: Jurassic World Battle Damage Pachycephalosaurus Figure- Manufacturer: Mattel
- Brand: Mattel
- 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
- Color: Green/Orange
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!
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Mattel Multicolor Toy
 | Lowest New Price: $18.99* In Stock* *(As of 15:42 Pacific 13 Feb 2025 More Info)
Click Here | Description: Mattel Jurassic World Wild Roar Dinosaur Action Figure, Pachyrhinosaurus with Continuing Head Strike & Sound, Posable Toy with Digital Play- Manufacturer: Mattel
- Brand: Mattel
- Model: HTK72
- UPC: 194735192625
- EAN: 0194735192625
- PartNumber: HTK72
Details:Physical Description:- Size: 5.2205 inches by 2.9016 inches by 11.1496 inches
- Weight: 0.88846291586 Pounds
- Color: Multicolor
Features:- ?Rampage attack and roar! This Wild Roar Pachyrhinosaurus dinosaur toy has an aggressive dual head strike attack, accompanied by a ferocious roar for exciting action play!
- ?Lifelike action! The spin wheel-activation on this herbivore figure can be wheeled forward or backward to create a continuous, realistic motion of its signature horned frill.
- ?Medium in size, full of thrills! The Pachyrhinosaurus is 11 inches long and has its signature bony horned frill. It's designed with a habitat-specific deco and movable joints, ready for battle moves or wild poses.
- ?Wildly fun! This Wild Roar Pachyrhinosaurus figure makes a great toy for dinosaur fans 4 years and older.
- ?Digital dino and games! Scan the hidden Tracking Code in the free Jurassic World Play App with a compatible smart device (not included) to collect the digital dino and play fiercely fun games!
- ?Ride 'N Rampage! In this game, start racing motocross and activate "Destruction Mode" to suddenly turn into a rampaging dinosaur! Collect keys and badges while dodging obstacles on this adventurous ride!
Click here for more information |
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Gemini&Genius
 | Lowest New Price: $15.99* In Stock* *(As of 15:42 Pacific 13 Feb 2025 More Info)
Click Here | Description: Gemini&Genius Dinosaur Toy Pachycephalosaurus for Kids, Stygimoloch Cretaceous Dinosaur World Figurine, Realistic Dino Toy Gift, Collection, Cake Topper, Role-Play, Storytelling Prop, Decor 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. Made of sturdy heavy plastic, It also makes a fine display piece for adult collectors.
- ?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 Gemini&Genius dino toys can Display Or Play with 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 cool & 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 and toys afterwards.
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Jurassic World Gray Toy
 | List Price: $19.87* Lowest New Price: $17.96* In Stock* *(As of 15:42 Pacific 13 Feb 2025 More Info)
Click Here | Description: Mattel Jurassic World Toys Camp Cretaceous Stygimoloch Stiggy Savage Strike Dinosaur Figure, Smaller Size, Attack Move Iconic to Species, Movable Arms & Legs, Ages 4 Years Old & Up- Manufacturer: Mattel
- Brand: Jurassic World
- Model: GVG49
- UPC: 887961925272
- EAN: 0887961925272
- PartNumber: GVG49
Details:Physical Description:- Size: 6.2992 inches by 2.1654 inches by 8.2677 inches
- Weight: 0.24030386558 pounds
- Color: Gray
Features:- Play out the ultimate dinosaur rivalry and battle with Jurassic World Savage Strike dinosaur action figures inspired by the Jurassic World: Camp Cretaceous animated series!
- 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 series. Battle it out—Savage Strike style—with these fierce action figures!
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Jurassic World Multicoloured Toy
 | Lowest New Price: $47.88* *(As of 15:42 Pacific 13 Feb 2025 More Info)
Click Here | Description: Jurassic World - Toy, Multicoloured (Mattel GWN34)- Manufacturer: Mattel
- Brand: Jurassic World
- Model: HFF13
- UPC: 887961943917
- EAN: 0887961943917
- PartNumber: GWN34
Details:Physical Description:- Size: 0.393700787 inches by 0.393700787 inches by 0.393700787 inches
- Color: Multicoloured
Features:- Jurassic World Legacy Collection Mod Sdos Dinosaur Articulated Figure
- This is an assortment
- Sent randomly
- Sold separately
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