Here is a concise summary of the provided text:
**Title:** Imagining a World with Ancient Monsters: Titanoboa and Chronosaurus
**Overview:**
* The article explores the idea of two prehistoric giants, Titanoboa (a 13m/43ft snake) and Chronosaurus (a 10m/33ft, 12-ton marine reptile), coexisting with humans in modern times.
* **Character Profiles:**
+ Titanoboa: lived 58 million years ago, warm-climate dweller, fed on fish and crocodiles, could swallow a young hippopotamus.
+ Chronosaurus: a massive marine predator, fed on turtles and plesiosaurs, would need enormous amounts of food to survive.
* **Modern-Day Implications:**
+ Habitat: Titanoboa in equatorial tropics, Chronosaurus in cold southern seas.
+ Human Impact: need for protective measures (e.g., high-voltage fences), disruption of food chains, potential extinction of various species.
+ Economic and Environmental Consequences: affected fishing industries, potential climate catastrophe due to whale extinction, and disrupted marine ecosystems.
* **Speculative Ending:** touches upon the unlikely but intriguing possibility of extinct animals returning to Earth due to global warming, highlighting the Titanoboa's potential revival in a warmer climate.
Here are the key facts extracted from the text, without opinions, with each fact numbered and in short sentences:
**Facts about Titanoboa**
1. Titanoboa lived approximately 58 million years ago.
2. For at least 10 million years, it was the largest predator on the planet.
3. Titanoboa's length reached up to 13 meters (43 feet).
4. Its weight exceeded one ton.
5. The snake's width could reach up to one meter (three feet).
6. Titanoboa could swallow a young hippopotamus.
7. Its diet primarily consisted of fish in ancient times.
8. Titanoboa inhabited swamps and dark rivers.
**Facts about Chronosaurus**
9. Chronosaurus reached a length of over 10 meters (33 feet).
10. Its weight could reach up to 12 tons.
11. It had a powerful ribcage, four fins, and a small tail.
12. Chronosaurus was an expert swimmer, likely attacking from depths.
13. Its bite force is comparable to a modern crocodile's.
14. Chronosaurus lived in different periods and possibly different habitats than Titanoboa.
**Hypothetical Coexistence with Humans**
15. If Titanoboa existed today, it might inhabit equatorial tropics (e.g., Colombia, Venezuela, Brazil, Ecuador, Peru, or Panama).
16. Humans would need to protect homes with high-voltage fences and possibly stun guns.
17. Titanoboa would unlikely sneak into houses but could break doors or windows.
18. In mega cities, the snake would have little chance of survival.
19. Its diet might include alligators, turtles, river dolphins, and fish.
20. The presence of Titanoboa and Chronosaurus would significantly disrupt food chains.
**Additional Facts**
21. The compression force of Titanoboa's coils is comparable to 1.5 times the weight of the Brooklyn Bridge.
22. This force translates to 28 kg/cm² or 400 pounds/square inch.
23. The price of Chronosaurus's saw-sharp teeth could theoretically exceed that of rhino horns, currently about $65,000 per kilogram, more expensive than gold.
24. Scientists speculate that, due to global warming, temperatures suitable for Titanoboa (32°C/90°F) might become a reality, albeit in millions of years.