isolation just as the isolation of places like Australia have allowed
places like Australia have allowed
places like Australia have allowed evolution to experiment in strange new
evolution to experiment in strange new
evolution to experiment in strange new animals so the isolation of the new
animals so the isolation of the new
animals so the isolation of the new continents could have caused the
continents could have caused the
continents could have caused the dinosaurs to diverge normally we would
dinosaurs to diverge normally we would
dinosaurs to diverge normally we would think that this might keep the dinosaurs
think that this might keep the dinosaurs
think that this might keep the dinosaurs from getting big because the land areas
from getting big because the land areas
from getting big because the land areas are getting smaller
are getting smaller
are getting smaller but that’s not what happens they get
but that’s not what happens they get
but that’s not what happens they get larger and larger isolation doesn’t
larger and larger isolation doesn’t
larger and larger isolation doesn’t answer why anything would want to be
answer why anything would want to be
answer why anything would want to be huge in the first place carrying around
huge in the first place carrying around
huge in the first place carrying around that heavy load required sturdier limbs
that heavy load required sturdier limbs
that heavy load required sturdier limbs and more energy here are animals that
and more energy here are animals that
and more energy here are animals that are in many ways ten times bigger than
are in many ways ten times bigger than
are in many ways ten times bigger than the biggest land animals today and yet
the biggest land animals today and yet
the biggest land animals today and yet they must have been subject to the same
they must have been subject to the same
they must have been subject to the same rules of physics that we have today
rules of physics that we have today
rules of physics that we have today gravity hasn’t changed the atmosphere
gravity hasn’t changed the atmosphere
gravity hasn’t changed the atmosphere hasn’t changed very much and so how do
hasn’t changed very much and so how do
hasn’t changed very much and so how do they manage that they’re certainly
they manage that they’re certainly
they manage that they’re certainly structurally capable of walking and
structurally capable of walking and
structurally capable of walking and standing dr. Don Henderson looks to
standing dr. Don Henderson looks to
standing dr. Don Henderson looks to modern animals for inspiration so to
modern animals for inspiration so to
modern animals for inspiration so to study the largest land animals ever to
study the largest land animals ever to
study the largest land animals ever to set foot on earth he takes a page from
set foot on earth he takes a page from
set foot on earth he takes a page from the largest land animals on earth today
the largest land animals on earth today
the largest land animals on earth today elephants I serve these large grown
elephants I serve these large grown
elephants I serve these large grown herbivores are our best shot for the
herbivores are our best shot for the
herbivores are our best shot for the sauropods being large may have benefits
sauropods being large may have benefits
sauropods being large may have benefits large plant eaters can get from place to
large plant eaters can get from place to
large plant eaters can get from place to place more efficiently because their
place more efficiently because their
place more efficiently because their strides are huge but they may have
strides are huge but they may have
strides are huge but they may have become big by necessity from the tough
become big by necessity from the tough
become big by necessity from the tough to digest food they ate there weren’t
to digest food they ate there weren’t
to digest food they ate there weren’t fruits and grasses like we have today
fruits and grasses like we have today
fruits and grasses like we have today there was a lot of low quality very
there was a lot of low quality very
there was a lot of low quality very woody plant material and that needs a
woody plant material and that needs a
woody plant material and that needs a large digestive tract to process it and
large digestive tract to process it and
large digestive tract to process it and to have a large digestive tract you need
to have a large digestive tract you need
to have a large digestive tract you need a large body to carry it far annoy the
a large body to carry it far annoy the
a large body to carry it far annoy the best reason for a prey animal to become
best reason for a prey animal to become
best reason for a prey animal to become humongous may have less to do with
humongous may have less to do with
humongous may have less to do with eating than with being eaten it becomes
eating than with being eaten it becomes
eating than with being eaten it becomes virtually attack proof
virtually attack proof
virtually attack proof if a lion is going to find a dinner it’s
if a lion is going to find a dinner it’s
if a lion is going to find a dinner it’s not going to tackle some five-time
not going to tackle some five-time
not going to tackle some five-time monster why not take a little 100
monster why not take a little 100
monster why not take a little 100 kilogram deer or something
kilogram deer or something
kilogram deer or something it’s just all-around easier and safer
it’s just all-around easier and safer
it’s just all-around easier and safer elephants are a great example once they
elephants are a great example once they
elephants are a great example once they get past that first year of life 10
get past that first year of life 10
get past that first year of life 10 elephants really not susceptible to
elephants really not susceptible to
elephants really not susceptible to predation anymore Lions just can’t kill
predation anymore Lions just can’t kill
predation anymore Lions just can’t kill an adult elephant so it makes sense for
an adult elephant so it makes sense for
an adult elephant so it makes sense for plant eaters to become enormous but why
plant eaters to become enormous but why
plant eaters to become enormous but why didn’t carnivores remain the light agile
didn’t carnivores remain the light agile
didn’t carnivores remain the light agile and for Asia’s predators of the dinosaur
and for Asia’s predators of the dinosaur
and for Asia’s predators of the dinosaur world
world
world hey big bomber how are you hungry huh
hey big bomber how are you hungry huh
hey big bomber how are you hungry huh you hungry oh yeah look at that
you hungry oh yeah look at that
you hungry oh yeah look at that paleo biologist dr. Greg Erickson also
paleo biologist dr. Greg Erickson also
paleo biologist dr. Greg Erickson also studies gigantism but he studies it from
studies gigantism but he studies it from
studies gigantism but he studies it from the other end of the food chain
the other end of the food chain
the other end of the food chain the Predators animal like this can
the Predators animal like this can
the Predators animal like this can generate 2,000 pounds of bite force oh
generate 2,000 pounds of bite force oh
generate 2,000 pounds of bite force oh ho ho
ho ho
ho ho imagine scaling this thing up to the
imagine scaling this thing up to the
imagine scaling this thing up to the size of a trance or X it’s you know it’s
size of a trance or X it’s you know it’s
size of a trance or X it’s you know it’s just mind-boggling to think about
just mind-boggling to think about
just mind-boggling to think about crocodilians perfected their killing
crocodilians perfected their killing
crocodilians perfected their killing ways back before dinosaurs arrived on
ways back before dinosaurs arrived on
ways back before dinosaurs arrived on the scene so evolution hasn’t had to
the scene so evolution hasn’t had to
the scene so evolution hasn’t had to tinker with their design much and the
tinker with their design much and the
tinker with their design much and the st. Augustine Alligator Farm in Florida
st. Augustine Alligator Farm in Florida
st. Augustine Alligator Farm in Florida is the perfect place to study them
is the perfect place to study them
is the perfect place to study them it has every living species of
it has every living species of
it has every living species of crocodilian from Dwarfs to giants like
crocodilian from Dwarfs to giants like
crocodilian from Dwarfs to giants like dinosaurs
dinosaurs
dinosaurs crocodiles evolved into bigger creatures
crocodiles evolved into bigger creatures
crocodiles evolved into bigger creatures over time this is a skull of 160 million
over time this is a skull of 160 million
over time this is a skull of 160 million year old crocodilian and one thing I
year old crocodilian and one thing I
year old crocodilian and one thing I want you to notice is that the skull of
want you to notice is that the skull of
want you to notice is that the skull of this animal is about the same size as
this animal is about the same size as
this animal is about the same size as the head of this hatchling alligator
the head of this hatchling alligator
the head of this hatchling alligator this is an interesting pattern that we
this is an interesting pattern that we
this is an interesting pattern that we see in the fossil record time and time
see in the fossil record time and time
see in the fossil record time and time again
again
again members of the dinosauria members of the
members of the dinosauria members of the
members of the dinosauria members of the crocodilia members of the Mammalia all
crocodilia members of the Mammalia all
crocodilia members of the Mammalia all started off as very small organisms and
started off as very small organisms and
started off as very small organisms and only later diversified into much larger
only later diversified into much larger
only later diversified into much larger forms the new coyote size crocodilian
forms the new coyote size crocodilian
forms the new coyote size crocodilian juncker suka s– illustrates the
juncker suka s– illustrates the
juncker suka s– illustrates the principle as well it was only 1 metre
principle as well it was only 1 metre
principle as well it was only 1 metre long but it’s super croc descendant was
long but it’s super croc descendant was
long but it’s super croc descendant was 12 times longer and happy to eat
12 times longer and happy to eat
12 times longer and happy to eat gigantic dinosaurs
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