S U N D A Y I N T H E P A R K
love
dad
Love at Arm's Length.
A G E O F D I N O S A U R S
The dinosaurs dominated the landscape for
175 million years.
A S T E R O I D I M P A C T
One day 66 million years ago an asteroid 7 miles across
hit the Earth with the force of a speeding bullet.
The impact liquified rock twenty miles deep.
A mile high tsunami resulted. Clouds of debris blocked
sunlight for years, destroying photosynthesis because
of the widespread plant die offs. 75% of all animal
species were swept from existence as starvation and
toxins took their toll.
T O X I C V O L C A N T I C G A S
A second source of catastrophic death was also
occurring in India as volcanic eruptions belched
toxic gases, rich in sulfur, into the atmosphere.
The Earth's plants were not only cut off from
their ultimate energy bar, the sun, but the rain
came laced with chemicals only a refinery
would appreciate.
A G E O F M A M M A L S
The world is an empty place.
The noise and nuisances of life are gone.
Every life strategy you can think of is available
to those able to show up. Recovery from mass extinction
begins immediately.
First off, who are our survivors?
Generally speaking, small seed-eating animals
that can survive long periods without food.
Eventually DNA fills this land of opportunities
with animal improvisations of every sort.
The species best engineered to meet the
circumstance wins out over time. But
success is not guaranteed. There are always
new challenges that must first be met.
E L E P H A N T B I R D
The large bipedal predator like T. rex was gone.
An ostrich type bird eventually developed enough
to occupy this long empty niche. The musclebound
legs say this bird would never get off the ground.
A small head with a bird bill replaces a massive
jaw filled with teeth as in the earlier dinosaur version.
Apparently useless wings replace clawed forearms.
No need for a tail as counterbalance to the weight
of a heavy head and neck up front.
This bird was a dinosaur with feathers.
P R I M A T E A N C E S T O R
The oldest known species of primate lineage.
Purgatorius appears in the fossil record about
100,000 years following the Cretaceous - Paleocene
extinction. It probably ate seeds and lived in trees
like a squirrel. The prominent nose makes it
easier to track down buried seeds.
How horrible it must have seemed to them
once they found out their distant offspring
would turn out to be apes.
* * * * *
OVER EASY
H A T Z E G O P T E R Y X
They aren't dinosaurs but they grew up
in the same neighborhood along side
T. rex and Triceratops. They were
lightweight and agile, and they had wings.
P T E R A N O D O N
The first vertebrates to fly - true sustained
flight. Genetic roll of the dice stumbled upon
the solution by elongating the fourth finger
of the animal's forearm to enormous length.
Every Pterosaur had this basic wing
arrangement.
L U S O G N A T H U S
Tens of millions of years of uninterrupted tropical bliss
over most of the globe. Life was good.
Everyone knew their place in the grand scheme of
things. Earthly paradise had become the law of nature.
P T E R O S A U R I A
The Crustaceous was a time of behemoths
roaming the land. Even the flying reptiles
the size of a giraffe were able to become
airborne despite packing the weight of 550 pounds.
A R A M B O U R G L A N I A
A number of Pterosaur species had developed
wings that also served as forelegs. This approach
could provide a good living for those prone to
browse among the brush for small animals.
K A R I R I D R A C O
The brain made up in efficiency what it lacked
in size. The area set aside for flight
control had a highly specialized division of labor.
Organization proved superior in performance
when compared with general purpose memory.
This entire class of animals died alongside
dinosaurs when an asteroid the size of
Mount Everest hit the Earth 66 million
years ago.
* * * * *
OVER EASY
Skull of the Stegosaurus, a Jurassic dinosaur with
bony plates lined upright along the crest of its
back and ending with four menacing spikes
at the tip of its tail. Its profile is iconic.
Its fossil remains populate a Jurassic layer
in western North America known as the
Morrison Formation. T. rex and Triceratops
are among the notable fossilized dinosaurs
discovered here.
M O R R I S O N F O R M A T I O N
This red layer over grey near Green River, Utah
shows the boundary between the Jurassic and
Cretaceous Periods. Jurassic is the red layer,
so the more recent Cretaceous would be deposited
above it. The red is the Morrison Formation, a
layer containing the fossils of over seventy species
of dinosaur from the Late Jurassic.
J U R A S S I C - C R E T A C E O U S F O S S I L S
Each name on this map identifies a proven spot for
good fossil hunting. Arid terrain. Little water for
soil erosion and for encouraging plants to explore
all about with their intrusive roots. The fossils
here have remained unmolested for over 60 million
years. Compare that with an ancient Egyptian mummy,
barely a rookie at ten thousand years.
D I P L O D O C U S
Standing on its hind legs keeps the throat
out of reach of these two attacking allosaurs.
The long whip of its tail delivers a supersonic
papercut to its target. You don't know you're cut
until your top half slides off the half holding your legs.
After all, the Diplodocus did not grow to over a
hundred feet by feeding all the neighborhood
with its flesh.
This is another Jurassic hall of famer found amidst
the Morrison Formation.
A L L O S A U R U S
It looks like the T. rex skeleton. Allosaurus
is an apex predator much like Tyrannosaurus.
They share the same basic design, but Allosaurus
lived 77 million years prior to T. rex. We are
closer to T. rex at 66 million years. Either way,
it is all a stack of infinities in human terms.
After all this time, the apex predator has changed
little in design. T. rex is essentially a scaled up version
of the 70 million year old Allosaurus body plan.
It has upgrades but nothing radically new.
The DNA strategy here:
Don't fix what ain't broke.
T Y R A N N O S A U R U S
T. rex. Nine ton maniac in the forest.
Smells your presence from a thousand feet,
and more. Binocular eyes gives it sharp, 3-D
vision. Its powerful forearms smother your
frantic efforts to break free, drawing you up
to its waiting mouth. Sixty spike-like teeth
cut short your dying words.
There is no empathy shown towards those
we delight in eating.
* * * * *