One day, while exploring their attic, Finn and Elijah found an old, dusty time-travel portal. With a leap of faith, they decided to enter, and suddenly they were in the Cretacious period.

Their first encounter was with a gentle Triceratops. 'Look at its three horns and green skin!' exclaimed Finn. 'And it's called a Triceratops,' added Elijah.

As they ventured further into the jungle, they came across a Tyrannosaurus Rex. Its large teeth and fierce demeanor startled them, but they quickly hid behind a boulder.

Looking up to the sky, they saw a Pterodactyl soaring high. 'Wow, a flying dinosaur!' said Finn in awe. 'Yes, it's a Pterodactyl,' Elijah confirmed.

At the riverbank, they found a Stegosaurus with its spiked tail and blue skin. 'Stego...what?' Finn asked. 'Stegosaurus, and it's not as scary as the T-rex,' Elijah explained.

They spent the day counting the dinosaurs they saw. 'We saw one Triceratops, one T-rex, one Pterodactyl, and one Stegosaurus. That's four dinosaurs!' said Finn excitedly.

As the sun began to set, the portal reappeared. 'We should go home now, Finn,' said Elijah, his protective instincts kicking in.

Before leaving, they took one last look at the prehistoric world. 'We learned so much today,' said Finn. 'Yes, we did. Let's tell everyone about our adventure,' agreed Elijah.

They stepped into the portal and were quickly transported back to their attic. They looked at each other, their eyes shining with the thrill of the adventure they had just experienced.

Back home, they spent hours drawing the dinosaurs they had seen and labelling them with their names and colors. 'This was the best adventure ever,' said Finn, grinning at his older brother.

Elijah agreed, 'Yes, it was, Finn. And we learned a lot too. Remember, knowledge is the greatest adventure.'

With their minds filled with dinosaur facts and hearts brimming with adventure, the brothers eagerly awaited their next trip into the mysterious portal.