Terrifying Prehistoric Sea Monsters

sfgiants

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:snoop:At people not even comprehending what your saying and would rather make fun of you. Your absolutely right, how the hell do we know what these things looked like? Not too long ago they came out that Velociraptors might have actually had more feathers rather than the reptilian look from what scientists kept showing us. People Science isn't infallible, 500 years ago they told us the Sun revolves around the Earth and a hundred years ago that nothing is smaller than an atom. Scientists are working on limited information and say a lot of bullshyt half the time.

Science/scientists never claimed the sun revolved around the earth
And science doesn't, hasn't and will never claim to be infallible. If you understood anything about science you'd know you can never prove a scientific theory only disprove it.
 

tmonster

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Yeah, the theory goes that cells could replicate at a much more efficient and healthy pace with amplified oxygen intake.

If that was indeed the case that there was more oxygen in prehistoric times. I don't know how scientists could prove that was true though.

almost
it's called the carboniferous period.
Before termites existed and fungi had developed the enzymatic capacity to digest wood; dead trees just collected into the terrestrial strata over millions of years and as they broke down over time they started releasing the oxygen contained in their molecular makeup. this greatly increased the environmental oxygen concentration, allowing the oxygen to permeate deeper into tissues of insects who essentially breathed through their skin via osmosis (and not through lungs, which create an oxygen rich environment through selective enzymatic exposure (hemoglobin), like we do). So the deeper the oxygen could permeate the bigger an insect could be and still survive and not die of asphyxia/hypoxia. And so giants bugs got their fukking on and proliferated. which probably looked like this
o-INSECT-SEX-facebook.jpg



I don't know if the same idea applied to sea creatures but it is very plausible.
 
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tmonster

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The Carboniferous Period – Coal and Giant Insects
piecubed May 1, 2013Biology, Blog post, Energy

Trees evolved the ability to grow bark at the beginning of the carboniferous period (360 million years ago) but fungi took 50 million years to evolve the ability to digest it. As a result, most of the coal we have today was formed in this period.

800px-Stereum_hirsutum_-_Striegeliger_Schichtpilz_-_Gelber_Schichtpilz_-_01.jpg

Photo Credit: Norbert Nagel


Coal

Coal is a sedimentary rock made of mostly carbon and small amounts of other elements such as hydrogen, sulphur, oxygen and nitrogen. It is formed when plant fibre is put under high pressure and heat. Ancient forests were buried under the soil by flooding or by other natural phenomenons, more and more soil accumulated on top, increasing pressure, as they sank lower and lower the temperature increased. Slowly, over a long period of time, the plant material turned into coal.Coal is practically fossilised plant material (that’s why it’s called a fossil fuel).

The Carboniferous period

At the beginning of the Carboniferous period plants developed bark and also the fibre lignin. The trees of that era had a huge bark to wood ratio, as much as 20 to 1, compared to modern trees which have a ratio of 1 to 4. Lignin is toxic and it does not pass through cell walls easily. According to research by David Hibbett and colleagues fungi at the time had not evolved the ability to digest lignin and would take millions of years to do so. This meant that for a very long period of time (50 million years) there was no decomposition of bark.

Liquefaction-charbon.jpg

Photo Credit: Apphim

Combined with low-level seas and a hot climate, forests and swamps thrived during the carboniferous. Large amounts of carbon (in the form of wood and bark) were buried under the forest floor as it was not being broken down.

Because of this, oxygen levels became really high. In our current atmosphere oxygen makes up 21% of air, during the carboniferous it reached up to 35%. This had a couple of effects.

High oxygen levels breed giant insects

Firstly, even though the conditions at the time were very wet, global forest fires became very common as the extra oxygen provided extra flammability. This further increased the rate of coal deposits.

MjEl5hk.jpg

Model of Arthropleura, a millipede that could reach 2.6 metres in length – Photo Credit: Prof. Jörg Schneider (Freiberg University of Mining and Technology)

Secondly, animals that were passive absorbers of oxygen, like insects, started growing to huge sizes. And I mean HUGE.

There was a species of caterpillar that grew to 2.5 metres in length, a scorpion that grew to 70 cm and a dragonfly that had a wingspan of 75 cm. Yikes!

In fact, the size of many modern insects is only limited by ambient levels of oxygen. It’s not a genetic limit. More oxygen equals bigger size. There are scientists who are, right now, trying to grow large insects inside oxygen chambers. Someone should tell them to stop. PLEASE STOP.

Climate Change

Towards the end of the carboniferous period there was a huge extinction event, called the Carboniferous Rainforest Collapse, that wiped out a lot of the dense forest that had been accumulating for millions of years. Massive climate change decimated plant life and many invertebrates, which fed on detritus on the forest floor, became extinct.

The collapse also caused diversification. While before species were distributed homogeneously all the way across Pangea, after the collapse each tiny patch of surviving forest evolved its own mix of species.

-Francesco
 
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