🦖 CRETACEOUS PERIOD: LAST DYNASTY
PAGE 1 OF 5 — THE CRETACEOUS WORLD
145 MILLION YEARS AGO
THE LAST DYNASTY
The longest and most spectacular chapter of the dinosaur story. 79 million years. Continents separated. Seas rose and fell. Flowering plants exploded across the land. And the dinosaurs evolved into their most fearsome forms yet.
BLOOM!
THE CONTINENTS SPLIT
🌍 A WORLD WE RECOGNISE
By the Cretaceous the continents were drifting toward their modern positions. The Atlantic widened. India raced toward Asia. Shallow seas covered parts of North America. The world was becoming familiar — but with very different animals on it.
For the first time in Earth's history — flowers bloomed. Bees evolved. Fruits appeared. The world turned colourful.
"Something beautiful is growing..."
PAGE 2 OF 5 — THE KING
68–66 MILLION YEARS AGO
TYRANNOSAURUS REX
The most famous animal that ever lived. 12 metres long. 8 tonnes of muscle and bone. A skull 1.5 metres long packed with 60 banana-sized teeth capable of crushing solid bone. T-Rex was not just big — it was the most powerful land predator in Earth's history.
THE BITE
🤐 Bite force: 57,000 N — strongest ever on land
🪣 Teeth: 60, up to 30cm including root
🔥 Could bite THROUGH bone and digest it
👀 Binocular vision — hunted by sight
🪣 Teeth: 60, up to 30cm including root
🔥 Could bite THROUGH bone and digest it
👀 Binocular vision — hunted by sight
SIZE STATS
🔢 Length: ~12 metres
⚖ Weight: ~8 tonnes
📅 Lived: 68–66 Ma, Western North America
🦘 Speed: ~20 km/h — surprisingly fast
⚖ Weight: ~8 tonnes
📅 Lived: 68–66 Ma, Western North America
🦘 Speed: ~20 km/h — surprisingly fast
TINY ARMS?
👈 Arms: Only ~1 metre long — tiny looking
💪 But: Each could lift ~180 kg — very strong
🤔 Theory: Used to grip prey while biting
🦅 May have had feathers on its body
💪 But: Each could lift ~180 kg — very strong
🤔 Theory: Used to grip prey while biting
🦅 May have had feathers on its body
PAGE 3 OF 5 — THE HORNED GIANT
BATTLE READY
🛡 TRICERATOPS · 68–66 Ma
Length: ~9 metres · Weight: ~12 tonnes
3 horns — two brow horns up to 1 metre long
Large bony frill protects the neck
Found: Hell Creek, North America
3 horns — two brow horns up to 1 metre long
Large bony frill protects the neck
Found: Hell Creek, North America
DOME HEAD
🧠 Pachycephalosaurus skull dome: 25cm thick
Possibly headbutted rivals at 40 km/h — the force of a car crash.
Possibly headbutted rivals at 40 km/h — the force of a car crash.
HORN FACE
TRICERATOPS
The ultimate tank. Triceratops faced down T-Rex with three lethal horns and a bony neck frill. Fossil evidence shows healed T-Rex bite marks on Triceratops bones — proof these titans actually fought. And sometimes the Triceratops survived.
CHARGE!
PAGE 4 OF 5 — THE PACK HUNTERS
75 MILLION YEARS AGO
SMARTER THAN YOU THINK
The Cretaceous produced the most intelligent dinosaur predators. Velociraptors had proportionally large brains, were covered in feathers, and may have hunted in coordinated packs — cornering prey with terrifying precision. Nothing like the movie version.
VELOCIRAPTOR
🔢 Size: Turkey-sized — only 50cm tall
🦅 Fully covered in feathers like a bird
⚡ Sickle claw: 6.5cm, used to pin prey
🧠 One of the largest brains relative to body size
🦅 Fully covered in feathers like a bird
⚡ Sickle claw: 6.5cm, used to pin prey
🧠 One of the largest brains relative to body size
SPINOSAURUS
🔢 Length: 14–18 m — bigger than T-Rex
🌎 Lived in rivers and swamps of North Africa
🦔 Mostly a fish-eater — semi-aquatic
🔥 Sail on back: 1.8m tall — temperature control
🌎 Lived in rivers and swamps of North Africa
🦔 Mostly a fish-eater — semi-aquatic
🔥 Sail on back: 1.8m tall — temperature control
ANKYLOSAURUS
🛡 Body armour: Thick bony plates all over
⚡ Club tail: Solid bone — could break T-Rex legs
⚖ Weight: ~6 tonnes, very low to the ground
🦓 Even its eyelids were armoured
⚡ Club tail: Solid bone — could break T-Rex legs
⚖ Weight: ~6 tonnes, very low to the ground
🦓 Even its eyelids were armoured
PAGE 5 OF 5 — THE END OF EVERYTHING
66 MILLION YEARS AGO
THE ASTEROID
A rock 10–15 km wide travelling at 72,000 km/h struck the Yucatán Peninsula, Mexico. The impact released 10 billion times the energy of the Hiroshima bomb. Fires. Earthquakes. Tsunamis. A years-long nuclear winter. 75% of all species vanished. The reign of the non-bird dinosaurs was over.
BOOM!
THE SURVIVORS
🦅 Birds survived — feathered dinosaurs won
🌟 Mammals took over the emptied world
🌟 Crocodilians survived — unchanged today
🦖 66 Ma: Everything changed forever
🌟 Mammals took over the emptied world
🌟 Crocodilians survived — unchanged today
🦖 66 Ma: Everything changed forever
KEY TAKEAWAYS
📌 REMEMBER THIS
✦ Cretaceous: 79 million years (145–66 Ma)
✦ T-Rex had the strongest bite of any land animal
✦ Real Velociraptors were feathered and turkey-sized
✦ An asteroid ended it all — 66 million years ago
✦ T-Rex had the strongest bite of any land animal
✦ Real Velociraptors were feathered and turkey-sized
✦ An asteroid ended it all — 66 million years ago
🧠 QUIZ TIME!
CRETACEOUS PERIOD: LAST DYNASTY · 5 QUESTIONS
QUESTION 01
The Cretaceous was the longest of the three dinosaur periods. How many million years did it last?
QUESTION 02
The most famous T-Rex fossil site is one specific geological formation. Where is it?
QUESTION 03
T-Rex had the strongest bite ever measured for a land animal. What did it do with this power that was truly unique?
QUESTION 04
Hollywood's Velociraptor looks nothing like the real animal. Which description is actually accurate?
QUESTION 05
What caused the end-Cretaceous mass extinction that wiped out all non-bird dinosaurs 66 million years ago?
0/5
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