The Mysteries & Puzzles of T.rex Growth

Henry the PaleoGuy September 18, 2025
Video Thumbnail
Henry the PaleoGuy Logo

Henry the PaleoGuy

@henrythepaleoguy

About

Hello there! This is a channel that will cover all things science, anything from Zoology, Paleontology and even astronomy! I hope that with these videos, I can inspire new generations of people to be interested and engaged in these topics and that people both young and old can get something out of them. If I ever say something in one of my videos that is inaccurate or false, be sure to correct me. Profile picture: Joel Field Banner art copyright: Hyrotrioskjan.

Video Description

#JurassicWorldEvolution3 #ad Large, formidable and with jaws strong enough to crush through bone, Tyrannosaurs at the end of the Cretaceous period were some of the most formidable animals you could have ever come across, especially if you were a small hapless dinosaur, but, like any animal, they didn’t start out this way! Tyrannosaurs and how they grew up is something of both much intrigue, but also vigorous debate, much of which has made it a rather intimidating and challenging side of paleontology to get into. This is largely due to the scarcity of material, with the more frail remains of smaller animals being more difficult to preserve, with the selectivity of the fossilisation process generally favouring animals that have a good bit more heft on them, and can therefore remain more intact as their remains degrade. I hope that this video can help explain more about what we do know, and also as to A big thanks to ‪@JurassicWorldEvolution‬ for sponsoring this video! 🦖 Jurassic World Evolution 3 is out on October 21st and available for pre-order here: https://fron.dev/henrythepaleoguy-jwe3 #JurassicWorldEvolution3 #ad Art used for the thumbnail by: Batavotyrannus Background music: After All - Geographer Bright Idea - Geographer Jay Sweeps - Geographer Sardana - Kevin MacLeod Embrace - Sappheiros Fragments - AERHEAD Falling - Sappheiros (Ft. eSoreni) Helen 2 - Nikos Spiliotis Willow - Sappheiros Eden - Onycs Make sure to like and subscribe to learn more about our wonderful world! Sources: https://www.science.org/doi/10.1126/science.abd9220 https://peerj.com/articles/11450/ https://www.smithsonianmag.com/science-nature/tyrannosaurs-dominated-their-cretaceous-ecosystems-180978289/ https://cdnsciencepub.com/doi/abs/10.1139/cjes-2020-0177 https://archive.is/20200105050044/https://www.nytimes.com/2020/01/03/science/tyrannosaurus-rex-teenager.html#selection-533.0-536.0 https://peerj.com/articles/9192/ https://cdnsciencepub.com/doi/10.1139/cjes-2020-0174 https://cdnsciencepub.com/doi/abs/10.1139/cjes-2020-0169 https://gregfunston.com/2021/01/25/baby-tyrannosaurs/ https://www.science.org/doi/10.1126/science.abd9220 https://markwitton-com.blogspot.com/2022/05/the-mad-mad-mad-stilt-legged.html https://paleonerdish.wordpress.com/2020/06/05/the-growth-of-tyrannosaurus-rex/ https://onlinelibrary.wiley.com/doi/10.1111/brv.70026 https://en.wikipedia.org/wiki/Tyrannosaurus#Speed https://www.slashgear.com/baby-t-rex-bones-are-first-of-their-kind-and-kinda-cute-16643022/ https://anatomypubs.onlinelibrary.wiley.com/doi/10.1002/ar.20578?__cf_chl_tk=dVEZg5wbIcn6RJhvhBOzwsOQCB0VJZWD9TH9myTPhM8-1753608263-1.0.1.1-gd30tshxH4d6hlkYq0qQ2wBg3uQGKg_eCRR709ob9jY https://pmc.ncbi.nlm.nih.gov/articles/PMC6938697/ https://pmc.ncbi.nlm.nih.gov/articles/PMC4791554/#b44 https://www.science.org/doi/abs/10.1126/science.1138709 https://en.wikipedia.org/wiki/Tyrannosaurus https://agro.icm.edu.pl/agro/element/bwmeta1.element.dl-catalog-33700a8d-90b1-41b6-9193-ed940f576d17 https://www.proquest.com/docview/2700375031?pq-origsite=gscholar&fromopenview=true&sourcetype=Dissertations%20&%20Theses https://www.sci.news/paleontology/juvenile-tyrannosaurus-rex-07975.html#google_vignette https://gregfunston.com/2021/01/25/baby-tyrannosaurs/comment-page-1/ https://markwitton-com.blogspot.com/2022/05/the-mad-mad-mad-stilt-legged.html https://gregfunston.com/2021/01/25/baby-tyrannosaurs/ https://www.slashgear.com/baby-t-rex-bones-are-first-of-their-kind-and-kinda-cute-16643022/ https://peerj.com/articles/11450/ https://peerj.com/articles/9192/#supplementary-material https://peerj.com/articles/6432/ https://anatomypubs.onlinelibrary.wiley.com/doi/10.1002/ar.24219 https://www.sciencefocus.com/news/baby-tyrannosaurs-largest-ever-hatchlings https://agro.icm.edu.pl/agro/element/bwmeta1.element.dl-catalog-33700a8d-90b1-41b6-9193-ed940f576d17 https://en.wikipedia.org/wiki/Meraxes https://en.wikipedia.org/wiki/Medullary_cavity https://en.wikipedia.org/wiki/Mass_spectrometry https://pmc.ncbi.nlm.nih.gov/articles/PMC7116897/ https://www.sciencefocus.com/news/baby-tyrannosaurs-largest-ever-hatchlings https://www.livescience.com/tyrannosaurus-rex-size-age.html https://www.smithsonianmag.com/science-nature/tyrannosaurs-dominated-their-cretaceous-ecosystems-180978289/ https://peerj.com/articles/11450/ 0:00 - Intro 0:24 Embryonic/Hatchlings 8:24 Ontogenetic Shifts 17:26 Sponsored Segment 18:47 Mortality Rates/Lifespan 22:33 Potential Sexual Dimorphism 25:03 Nanotyrannus Controversies 29:32 Juvenile Tyrannosaur Out-Competing Other Predators 33:15 Conclusion Copyright Disclaimer under section 107 of the Copyright Act 1976, allowance is made for “fair use” for purposes such as criticism, comment, news reporting, teaching, scholarship, education, and research. All video/game content is recorded and edited under fair use rights for reasons of commentary and social satire.

You May Also Like

Upgrade Your Everyday

AI-recommended products based on this video

Loading...
Amazon Echo Show 8 (newest model), With Spatial Audio, Smart Home Hub, and Alexa, Charcoal

Amazon Echo Show 8 (newest model), With Spatial Audio, Smart Home Hub, and Alexa, Charcoal

(21,817)
149.99
PrimeFREE delivery Saturday, June 14
9K+ bought in past month
Loading...
Apple AirPods 4 Wireless Earbuds, Bluetooth Headphones, with Active Noise Cancellation, Adaptive Audio, Transparency Mode, Personalized Spatial Audio, USB-C Charging Case, Wireless Charging, H2 Chip
Best Seller

Apple AirPods 4 Wireless Earbuds, Bluetooth Headphones, with Active Noise Cancellation, Adaptive Audio, Transparency Mode, Personalized Spatial Audio, USB-C Charging Case, Wireless Charging, H2 Chip

(26,751)
$118.98$114.22
FREE delivery Fri, Oct 17
10K+ bought in past month
Loading...
Wireless Earbuds, Bluetooth 5.4 Headphones, True Wireless Stereo Earphones with IPX7 Waterproof, Noise Cancelling Mic, Fast Charging and Comfort Fit Ear Buds for Sports/Workouts - Black

Wireless Earbuds, Bluetooth 5.4 Headphones, True Wireless Stereo Earphones with IPX7 Waterproof, Noise Cancelling Mic, Fast Charging and Comfort Fit Ear Buds for Sports/Workouts - Black

(1,741)
$19.99
FREE delivery Sun, Jun 22 on $35 of items shipped by Amazon
10K+ bought in past month
Loading...
Apple AirPods 4 Wireless Earbuds, Bluetooth Headphones, Personalized Spatial Audio, Sweat and Water Resistant, USB-C Charging Case, H2 Chip, Up to 30 Hours of Battery Life, Effortless Setup for iPhone
Best Seller

Apple AirPods 4 Wireless Earbuds, Bluetooth Headphones, Personalized Spatial Audio, Sweat and Water Resistant, USB-C Charging Case, H2 Chip, Up to 30 Hours of Battery Life, Effortless Setup for iPhone

(23,152)
$89.99$83.69
FREE delivery Thu, Sep 4
10K+ bought in past month
Loading...
Apple AirPods Pro 2 Wireless Earbuds, Active Noise Cancellation, Hearing Aid Feature, Bluetooth Headphones, Transparency, Personalized Spatial Audio, High-Fidelity Sound, H2 Chip, USB-C Charging

Apple AirPods Pro 2 Wireless Earbuds, Active Noise Cancellation, Hearing Aid Feature, Bluetooth Headphones, Transparency, Personalized Spatial Audio, High-Fidelity Sound, H2 Chip, USB-C Charging

(38,487)
$199.00$187.32
FREE delivery Fri, Oct 3
10K+ bought in past month
Loading...
Smart Watch for Men/Women, 1.95" AMOLED Fitness Tracker Watches with Bluetooth Calls/Flashlight/100+ Sport Modes Heart Rate/Sleep Monitor Ultra Lightweight Ultrathin Design

Smart Watch for Men/Women, 1.95" AMOLED Fitness Tracker Watches with Bluetooth Calls/Flashlight/100+ Sport Modes Heart Rate/Sleep Monitor Ultra Lightweight Ultrathin Design

(0)
17.99
PrimeFREE delivery Saturday, June 14 on orders shipped by Amazon over $35
Loading...
Smart Watch for Men Women (Answer/Make Call), 1.96" HD Smartwatch Fitness Activity Tracker, 110+ Sports IP68 Waterproof, Heart Rate/Sleep Monitor/Pedometer/Calories, Fitness Watch for Android iOS

Smart Watch for Men Women (Answer/Make Call), 1.96" HD Smartwatch Fitness Activity Tracker, 110+ Sports IP68 Waterproof, Heart Rate/Sleep Monitor/Pedometer/Calories, Fitness Watch for Android iOS

(550)
24.99
PrimeFREE delivery Saturday, June 14 on orders shipped by Amazon over $35
100+ bought in past month
Loading...
Apple Watch Series 10 [GPS 46mm case] Smartwatch with Rose Gold Aluminium Case with Light Blush Sport Band - M/L. Fitness Tracker, ECG App, Always-On Retina Display, Water Resistant
Best Seller

Apple Watch Series 10 [GPS 46mm case] Smartwatch with Rose Gold Aluminium Case with Light Blush Sport Band - M/L. Fitness Tracker, ECG App, Always-On Retina Display, Water Resistant

(7,994)
$329.00$296.10
FREE delivery Thu, Jul 3
1K+ bought in past month
Loading...
Apple Watch Series 10 [GPS 42mm case] Smartwatch with Jet Black Aluminium Case with Black Sport Band - S/M. Fitness Tracker, ECG App, Always-On Retina Display, Water Resistant
Best Seller

Apple Watch Series 10 [GPS 42mm case] Smartwatch with Jet Black Aluminium Case with Black Sport Band - S/M. Fitness Tracker, ECG App, Always-On Retina Display, Water Resistant

(7,993)
$299.00$269.10
FREE delivery Thu, Jul 3
8K+ bought in past month
Loading...
NOCO Boost GB40: 1000A UltraSafe Jump Starter – 12V Lithium Battery Booster Pack, Portable Jump Box, Power Bank & Jumper Cables - for 6.0L Gas and 3.0L Diesel Engines
Best Seller

NOCO Boost GB40: 1000A UltraSafe Jump Starter – 12V Lithium Battery Booster Pack, Portable Jump Box, Power Bank & Jumper Cables - for 6.0L Gas and 3.0L Diesel Engines

(117,789)
$99.95$75.43
FREE delivery Sun, Sep 21
30K+ bought in past month
Loading...
UGREEN Nexode Power Bank 20000mAh 130W Portable Charger 72Wh PD Fast Charging 3-Port USB C Battery Pack with TFT Smart Display for MacBook/iPad/iPhone 16/Samsung S24 and More

UGREEN Nexode Power Bank 20000mAh 130W Portable Charger 72Wh PD Fast Charging 3-Port USB C Battery Pack with TFT Smart Display for MacBook/iPad/iPhone 16/Samsung S24 and More

(1,903)
69.99
PrimeFREE delivery Saturday, June 14
500+ bought in past month
Loading...
ANKER 737 Power Bank, 24,000mAh 3-Port Laptop Portable Charger with 140W Fast Charging, Smart Display, for Outdoor Work, Compatible with iPhone 16/15/14 Series, Vision Pro, Samsung, MacBook, and More

ANKER 737 Power Bank, 24,000mAh 3-Port Laptop Portable Charger with 140W Fast Charging, Smart Display, for Outdoor Work, Compatible with iPhone 16/15/14 Series, Vision Pro, Samsung, MacBook, and More

(13,939)
109.99
FREE delivery Saturday, June 14
9K+ bought in past month
Loading...
VOLTME Portable Charger, Slim 10000mAh 5V/3A Power Bank, USB C in&Out High-Speed Charging Battery Pack, Travel Essentials Dual Output Compatible with iPhone 16 15 14 13 12 Samsung Google iPad etc

VOLTME Portable Charger, Slim 10000mAh 5V/3A Power Bank, USB C in&Out High-Speed Charging Battery Pack, Travel Essentials Dual Output Compatible with iPhone 16 15 14 13 12 Samsung Google iPad etc

(51)
19.99
PrimeFREE delivery Saturday, June 14 on orders shipped by Amazon over $35
Loading...
Apple AirPods 4 Wireless Earbuds, Bluetooth Headphones, with Active Noise Cancellation, Adaptive Audio, Transparency Mode, Personalized Spatial Audio, USB-C Charging Case, Wireless Charging, H2 Chip
Best Seller

Apple AirPods 4 Wireless Earbuds, Bluetooth Headphones, with Active Noise Cancellation, Adaptive Audio, Transparency Mode, Personalized Spatial Audio, USB-C Charging Case, Wireless Charging, H2 Chip

(26,751)
$118.98$114.22
FREE delivery Fri, Oct 17
10K+ bought in past month
Loading...
Apple AirPods 4 Wireless Earbuds, Bluetooth Headphones, Personalized Spatial Audio, Sweat and Water Resistant, USB-C Charging Case, H2 Chip, Up to 30 Hours of Battery Life, Effortless Setup for iPhone
Best Seller

Apple AirPods 4 Wireless Earbuds, Bluetooth Headphones, Personalized Spatial Audio, Sweat and Water Resistant, USB-C Charging Case, H2 Chip, Up to 30 Hours of Battery Life, Effortless Setup for iPhone

(23,152)
$89.99$83.69
FREE delivery Thu, Sep 4
10K+ bought in past month
Loading...
Apple AirPods Pro 2 Wireless Earbuds, Active Noise Cancellation, Hearing Aid Feature, Bluetooth Headphones, Transparency, Personalized Spatial Audio, High-Fidelity Sound, H2 Chip, USB-C Charging

Apple AirPods Pro 2 Wireless Earbuds, Active Noise Cancellation, Hearing Aid Feature, Bluetooth Headphones, Transparency, Personalized Spatial Audio, High-Fidelity Sound, H2 Chip, USB-C Charging

(38,487)
$199.00$187.32
FREE delivery Fri, Oct 3
10K+ bought in past month
Loading...
Bose QuietComfort Bluetooth Headphones, Wireless Headphones with Active Over Ear Noise Cancelling and Mic, Deep Bass, Up to 24 Hours of Playtime, White Smoke

Bose QuietComfort Bluetooth Headphones, Wireless Headphones with Active Over Ear Noise Cancelling and Mic, Deep Bass, Up to 24 Hours of Playtime, White Smoke

(10,961)
249.00
FREE delivery Wednesday, June 11.
1K+ bought in past month
Loading...
Barnyard Designs Indoor Herb Garden Planter Set with Tray, Metal Windowsill Plant Pots with Drainage for Outdoor or Indoor Plants, Set/3 (Black)

Barnyard Designs Indoor Herb Garden Planter Set with Tray, Metal Windowsill Plant Pots with Drainage for Outdoor or Indoor Plants, Set/3 (Black)

(3,684)
26.95
PrimeFREE delivery Saturday, June 14 on orders shipped by Amazon over $35
100+ bought in past month
Loading...
Eye Contact Web Camera for Desktop Computer – 1080P USB Camera with Microphone & Stand, Center Cam for Laptop or Desktop, Manual Focus, Plug & Play for macOS & Windows(Black)

Eye Contact Web Camera for Desktop Computer – 1080P USB Camera with Microphone & Stand, Center Cam for Laptop or Desktop, Manual Focus, Plug & Play for macOS & Windows(Black)

(96)
37.39
PrimeFREE delivery Saturday, June 14
100+ bought in past month
Loading...
PEHAEL 3+3Pack for iPhone 17 Pro Max Privacy Screen Protector with Camera Lens Protector Full Coverage Anti-Spy Tempered Glass Film 9H Hardness Easy Installation Bubble Free [6.9 inch]

PEHAEL 3+3Pack for iPhone 17 Pro Max Privacy Screen Protector with Camera Lens Protector Full Coverage Anti-Spy Tempered Glass Film 9H Hardness Easy Installation Bubble Free [6.9 inch]

(151,641)
$7.99$6.39
FREE delivery Mon, Sep 29 on $35 of items shipped by Amazon
New on Amazon in past month
Loading...
Ailun 3 Pack Screen Protector for iPhone 16 Pro Max [6.9 inch] + 3 Pack Camera Lens Protector with Installation Frame,Sensor Protection,Dynamic Island Compatible,Case Friendly Tempered Glass Film

Ailun 3 Pack Screen Protector for iPhone 16 Pro Max [6.9 inch] + 3 Pack Camera Lens Protector with Installation Frame,Sensor Protection,Dynamic Island Compatible,Case Friendly Tempered Glass Film

(362,029)
$7.63
FREE delivery Wed, Aug 20 on $35 of items shipped by Amazon
10K+ bought in past month
Loading...
2025 AI Portable Fan Rechargeable, 4 Speeds 6600RPM Strong Airflow, Personal Waist Fan with up to 25H of Working Time, Hands-Free Hanging Neck Fan, Wearable Belt Fan for Camping, Outdoor, Jobsite

2025 AI Portable Fan Rechargeable, 4 Speeds 6600RPM Strong Airflow, Personal Waist Fan with up to 25H of Working Time, Hands-Free Hanging Neck Fan, Wearable Belt Fan for Camping, Outdoor, Jobsite

(1,636)
$19.98
FREE delivery Thu, Jul 3 on $35 of items shipped by Amazon
40K+ bought in past month