Tom you make biology understandable to everyone. I understand these and I make plastic molds for a living. I just wish I was in the class so I could ask questions.
Since these baby dinos take 2-5 years to hit their gowth spurt, would this indicate that the parents were not breeding each year, and instead giving natal care to the infants and toddlers? Or are the parents breeding each year and after a hatchling stage the young are left to fend for themselves before the next breeding season?
Hi Tom, I was wondering if anyone has found an explanation for why so many very large dinosaurs are found in modern day South America (i.e. Amargosaurus, Argentinosaurus, Giganotosaurus and the newly discovered Patagotitan)
Hello sir, I don't know if there is, but it may be a situation where large body-size is an arms race response. If prey evolves large size as a defense, predators also increase in size (aka Giganotosaurus), which then puts pressure to continue to evolve larger body size. It is also possible that a group of animals had evolved some method of increasing body size to some enormous potential (not easy; aka the Titanosaurs) as many of these super giants are sauropods. It is also possible that with our fragmented fossil record we are missing large-body species from other continents, making South America appear truly unique (it may be, but we have to be a little careful, especially with so many poorly known areas). None of these possibilities necessarily exclude one another, and more potential explanations are certainly possible.
Given what's known about large land predators and what I've now learned about T.rex growth patterns, I don't think tyrannosaurid food acquisition is as simple as people tend to make it out to be. I seriously doubt that it was a matter of hunting vs scavenging but rather a combination of the two with the proportion of hunting vs scavenging changing as it grew.
This is the general consensus. To support such a large animal it would need to do more than passively wait for animals to die. Having said that it would certainly be happy to eat a nice rotting carcass when it found it. Here is a much earlier video ruclips.net/video/oZl3a_kOEiE/видео.html and here is a more recent one ruclips.net/video/f-jD7kQvyPs/видео.html and another good one ruclips.net/video/sqkqkxYGNZc/видео.html
love ur lectures, been injured for a year now, ur lectures have been a big help. Thank you for helping me focus on something else other than pain.
Tom you make biology understandable to everyone. I understand these and I make plastic molds for a living. I just wish I was in the class so I could ask questions.
I love these videos, I just wish the sound was better.
Same, excellent lectures, but i would really appreciate if the sound could be turned up by 2.
Since these baby dinos take 2-5 years to hit their gowth spurt, would this indicate that the parents were not breeding each year, and instead giving natal care to the infants and toddlers? Or are the parents breeding each year and after a hatchling stage the young are left to fend for themselves before the next breeding season?
Hi Tom, I was wondering if anyone has found an explanation for why so many very large dinosaurs are found in modern day South America (i.e. Amargosaurus, Argentinosaurus, Giganotosaurus and the newly discovered Patagotitan)
Hello sir,
I don't know if there is, but it may be a situation where large body-size is an arms race response. If prey evolves large size as a defense, predators also increase in size (aka Giganotosaurus), which then puts pressure to continue to evolve larger body size. It is also possible that a group of animals had evolved some method of increasing body size to some enormous potential (not easy; aka the Titanosaurs) as many of these super giants are sauropods. It is also possible that with our fragmented fossil record we are missing large-body species from other continents, making South America appear truly unique (it may be, but we have to be a little careful, especially with so many poorly known areas). None of these possibilities necessarily exclude one another, and more potential explanations are certainly possible.
Given what's known about large land predators and what I've now learned about T.rex growth patterns, I don't think tyrannosaurid food acquisition is as simple as people tend to make it out to be. I seriously doubt that it was a matter of hunting vs scavenging but rather a combination of the two with the proportion of hunting vs scavenging changing as it grew.
This is the general consensus. To support such a large animal it would need to do more than passively wait for animals to die. Having said that it would certainly be happy to eat a nice rotting carcass when it found it. Here is a much earlier video ruclips.net/video/oZl3a_kOEiE/видео.html and here is a more recent one ruclips.net/video/f-jD7kQvyPs/видео.html and another good one ruclips.net/video/sqkqkxYGNZc/видео.html