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Dinosaur Jungle   >   Dinosaur Names   >   Pachycephalosaurus
Dinosaur Jungle   >   Dinosaur Types   >   Pachycephalosaurus

Pachycephalosaurus



dinosaur picture pachycephalosaurus

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Scientific Classification
  Kingdom Animalia
  Phylum Chordata
  Class Sauropsida
  Superorder Dinosauria
  Order Ornithischia
  Suborder Cerapoda
  (unranked) Marginocephalia
  Infraorder Pachycephalosauria
  Family Pachycephalosauridae
  Genus Pachycephalosaurus
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

Pachycephalosaurus was a herbivore (plant-eater) that lived from 76 to 65 million years ago

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Pachycephalosaurus Facts

 
Here is a summary of some of the key facts about Pachycephalosaurus:
  1. Pachycephalosaurus was a genus of dinosaur.

  2. "Pachycephalosaurus" means "thick-headed lizard". This name was chosen by Barnum Brown and Erich Maren Schlaikjer in 1943.

  3. 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.

  4. Pachycephalosaurus was a Pachycephalosaur - a member of a group of related herbivorous (plant-eating) dinosaurs with bony domes on their heads.

  5. Pachycephalosaurus lived between about 76 million years ago and 65 million years ago, during the late Cretaceous period.

  6. Pachycephalosaurus was one of the dinosaurs which died out during the Cretaceous-Tertiary mass extinction at the end of the Mesozoic Era.

  7. Pachycephalosaurus lived in North America.

  8. Pachycephalosaurus was a herbivore (plant-eater).

  9. Pachycephalosaurus was about 15 feet (4.6 meters) long.

  10. Pachycephalosaurus weighed about 950 pounds (430 kilograms).




Pachycephalosaurus Books


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Looking At...Pachycephalosaurus: A Dinosaur from the Cretaceous Period (New Dinosaur Collection)
By Frances Freedman

Gareth Stevens Pub
Released: January 1st, 1995
Library Binding (24 pages)

Looking At...Pachycephalosaurus: A Dinosaur from the Cretaceous Period (New Dinosaur Collection)
List Price: $19.93*
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Description:
Looking At...Pachycephalosaurus: A Dinosaur from the Cretaceous Period (New Dinosaur Collection)
  • Manufacturer: Gareth Stevens Pub
  • ISBN: 0836812778
  • EAN: 9780836812770
Details:
  • Product Category: Library Binding
  • Number of Pages: 24
  • Author: Frances Freedman
  • Publication Date: January 1st, 1995
  • Release Date: January 1st, 1995
Physical Description:
  • Size: 9.75 inches by 8.75 inches by 0.5 inches
  • Weight: 0.62 pounds
Click here for more information
Pachycephalosaurus: The Thick-Headed Lizard (Graphic Dinosaurs)
By Rob Shone

PowerKids Press
Released: August 30th, 2011
Library Binding (32 pages)

Pachycephalosaurus: The Thick-Headed Lizard (Graphic Dinosaurs)
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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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Pachycephalosaurus - Thick-Headed Lizard
By Enrique Fiesta

CREATESPACE
Released: January 23rd, 2015
Paperback (54 pages)

Pachycephalosaurus - Thick-Headed Lizard
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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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Pachycephalosaurus: A First Look (Read about Dinosaurs (Read for a Better World â„¢))
By Jeri Ranch

Lerner Publications â„¢
Released: August 1st, 2023
Paperback (24 pages)

Pachycephalosaurus: A First Look (Read about Dinosaurs (Read for a Better World â„¢))
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Pachycephalosaurus: A First Look (Read about Dinosaurs (Read for a Better World â„¢))
  • Manufacturer: Lerner Publications â„¢
  • EAN: 9798765603482
Details:
  • Paperback
  • Number of Pages: 24
  • Author: Jeri Ranch
  • Publication Date: August 1st, 2023
  • Release Date: August 1st, 2023
Physical Description:
  • Size: 8.25 Inches by 8.0 Inches by 0.13 Inches
  • Weight: 0.39903669422 Pounds
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Velociraptor vs. Pachycephalosaurus (Prehistoric Battles Book 12)
By Jon Alan

Gray Duck Creative Works LLC
Kindle Edition (0 pages)

Velociraptor vs. Pachycephalosaurus (Prehistoric Battles Book 12)
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Description:
Velociraptor vs. Pachycephalosaurus (Prehistoric Battles Book 12)
  • Manufacturer: Gray Duck Creative Works LLC
Details:
  • Kindle Edition
  • Format: Kindle eBook
  • Number of Pages: 0
  • Author: Jon Alan
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Pachycephalosaurus : Dinosaurs Series
By Janet Riehecky

The Childs World Inc
Library Binding

Pachycephalosaurus : Dinosaurs Series
List Price: $21.36*
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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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Boris the Pachycephalosaurus
By Chase Coffield

Independently published
Released: April 14th, 2023
Paperback (30 pages)

Boris the Pachycephalosaurus
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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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Pachycephalosaurus (World of Dinosaurs)
By Rebecca Sabelko

Epic
Released: August 1st, 2023
Library Binding (24 pages)

Pachycephalosaurus (World of Dinosaurs)
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Pachycephalosaurus (World of Dinosaurs)
  • Manufacturer: Epic
  • EAN: 9798886875041
  • PartNumber: 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: 9.25 Inches by 7.75 Inches by 0.5 Inches
  • Weight: 0.54895103238 Pounds
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Pachycephalosaurus: And Other Bone-Headed Plant-Eaters (Prehistoric World)
By Virginia Schomp

Cavendish Square Publishing
Released: January 30th, 2005
Library Binding (32 pages)

Pachycephalosaurus: And Other Bone-Headed Plant-Eaters (Prehistoric World)
Lowest New Price: $32.64*
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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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Pachycephalosaurus (Dinosaur Library)
By Frances Swann

Brand: Rourke Pub Group
Library Binding (24 pages)

Pachycephalosaurus (Dinosaur Library)
List Price: $21.93*
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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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