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 that heavy load required
carrying around that heavy load required sturdier limbs and more energy here are
sturdier limbs and more energy here are
sturdier limbs and more energy here are animals that are in many ways ten times
animals that are in many ways ten times
animals that are in many ways ten times bigger than the biggest land animals
bigger than the biggest land animals
bigger than the biggest land animals today and yet they must have been
today and yet they must have been
today and yet they must have been subject to the same rules of physics
subject to the same rules of physics
subject to the same rules of physics that we have today gravity hasn’t
that we have today gravity hasn’t
that we have today gravity hasn’t changed the atmosphere hasn’t changed
changed the atmosphere hasn’t changed
changed the atmosphere hasn’t changed very much and so how do they manage that
very much and so how do they manage that
very much and so how do they manage that they’re certainly structurally capable
they’re certainly structurally capable
they’re certainly structurally capable of walking and standing
of walking and standing
of walking and standing dr. Don Henderson looks to modern
dr. Don Henderson looks to modern
dr. Don Henderson looks to modern animals for inspiration so to study the
animals for inspiration so to study the
animals for inspiration so to study the largest land animals ever to set foot on
largest land animals ever to set foot on
largest land animals ever to set foot on earth he takes a page from the largest
earth he takes a page from the largest
earth he takes a page from the largest land animals on earth today elephants I
land animals on earth today elephants I
land animals on earth today elephants I serve is large grown herbivores are our
serve is large grown herbivores are our
serve is large grown herbivores are our best shot for sauropods being large may
best shot for sauropods being large may
best shot for sauropods being large may have benefits large plant eaters can get
have benefits large plant eaters can get
have benefits large plant eaters can get from place to place more efficiently
from place to place more efficiently
from place to place more efficiently because their strides are huge but they
because their strides are huge but they
because their strides are huge but they may have become big by necessity from
may have become big by necessity from
may have become big by necessity from the tough to digest food they ate there
the tough to digest food they ate there
the tough to digest food they ate there weren’t fruits and grasses like we have
weren’t fruits and grasses like we have
weren’t fruits and grasses like we have today there was a lot of low quality
today there was a lot of low quality
today there was a lot of low quality very woody plant material and that needs
very woody plant material and that needs
very woody plant material and that needs a large digestive tract to process it
a large digestive tract to process it
a large digestive tract to process it and to have a large digestive tract you
and to have a large digestive tract you
and to have a large digestive tract you need a large body to carry it far and
need a large body to carry it far and
need a large body to carry it far and away the best reason for a prey animal
away the best reason for a prey animal
away the best reason for a prey animal to become humongous may have less to do
to become humongous may have less to do
to become humongous may have less to do with eating than with being eaten it
with eating than with being eaten it
with eating than with being eaten it becomes virtually attack proof
becomes virtually attack proof
becomes 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 in
get past that first year of life in
get past that first year of life in 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 voracious predators of the dinosaur
and voracious predators of the dinosaur
and voracious predators of the dinosaur world
world
world hey big bomber how are you hungry hungry
hey big bomber how are you hungry hungry
hey big bomber how are you hungry hungry oh yeah look at that
oh yeah look at that
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 hoho
generate 2,000 pounds of bite force hoho
generate 2,000 pounds of bite force hoho 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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