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#480 – Dave Hone: T-Rex, Dinosaurs, Extinction, Evolution, and Jurassic Park

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#480 – Dave Hone: T-Rex, Dinosaurs, Extinction, Evolution, and Jurassic Park

Lex Fridman Podcast

2025/09/04
Lex Fridman Podcast

Lex Fridman Podcast

2025/09/04
OverviewShownoteHighlightsTranscriptChaptersPins

Shownote

Dave Hone is a paleontologist, expert on dinosaurs, co-host of the Terrible Lizards podcast, and author of numerous scientific papers and books on the behavior and ecology of dinosaurs. He lectures at Queen Mary University of London on topics of Ecology, Z...

Highlights

In this extensive conversation, paleontologist Dave Hone delves into the fascinating world of dinosaurs, exploring their biology, behavior, and evolution. From the physical prowess of the T-Rex to the myths surrounding dragons and the future of paleontology, the discussion blends scientific insight with popular culture.
00:24
Lindy enables building and deploying AI agents with a user-friendly interface
26:32
T-Rex's large eyes suggest strong visual acuity, possibly even nocturnal hunting.
41:26
Juvenile triceratops could weigh a ton but were not very fast targets for T-Rex.
1:02:48
Borealopelta markmitchelli fossil preserved with skin, keratin sheaths, and stomach contents
1:04:38
Stan the T-Rex sold for $31 million, highlighting the commercial value of fossils.
1:17:49
T-Rex had a more robust skull with greater bone density compared to Giganotosaurus, supporting its powerful bite.
1:52:33
Sparse data makes it hard to confirm pack hunting in dinosaurs
1:57:20
Medullary bone can indicate a female dinosaur, but it's rare and not definitive in most specimens.
2:21:18
Spinosaurus had conical teeth, a sail on its back, and weak swimming evidence
2:26:06
Pteranodons picking up people in films is unnecessarily inaccurate.
2:39:00
T-Rex neuron count estimates revised from 3 billion to 250 million - 1.7 billion
2:43:34
T-Rex bones with tooth marks indicate rare cannibalistic behavior, possibly for feeding or dominance.
3:00:54
Troodon, a highly intelligent dinosaur, sparks speculation about advanced dinosaur evolution
3:17:22
Tiktaalik represents a key evolutionary transition from water to land.
3:25:24
Feathers likely evolved for insulation and sexual display in dinosaurs
3:33:23
Protoceratops offers unique population data from embryos to adults.

Chapters

Introduction
00:00
Sponsors, Comments, and Reflections
00:22
T-Rex's size & biomechanics
07:18
T-Rex's hunting strategies
31:00
History of dinosaurs on Earth
44:07
$31.8 million T-Rex fossil
1:04:38
T-Rex's skull and bone-crushing bite force
1:17:44
What Jurassic Park got wrong
1:36:33
Evolution and sexual selection
1:54:52
Spinosaurus
2:15:26
What Jurassic Park got right
2:26:02
T-Rex's intelligence
2:33:35
Cannibalism among T-Rex
2:43:34
Extinction of the dinosaurs
2:49:05
Dragons
3:06:15
Birds are dinosaurs
3:22:39
Future of paleontology
3:33:23

Transcript

Lex Fridman: The following is a conversation with Dave Hone, a paleontologist, expert on dinosaurs, co-host of the Terrible Lizards podcast, and author of many scientific papers and books on the behavior and ecology of dinosaurs. This was truly a fun and f...