The conquest of the terrestrial environment

Land animals have one thing in common, their "arms" always have the same pattern, from distal to proximal they have the same order of bones, this order is as follows....

• One bone - One bone - Phalanges - Little bones

• One bone - Two bones - Little bones - Phalanges

• Two bones - One bone - Little bones - Phalanges

• One Bone - Two bones - Phalanges - Little bones

The _______ from fishes, birds and ______ are remarkable similar; this and their similarities in the ___ are key factors to identify that in fact four leged animals come from fishes. (write all three answers followed by a "-", ex: leg - body - eye)

Based on the video, the devonian era was between....

• 250 and 300 million years ago.

• 365 and 385 million years ago.

• 365 and 500 million years ago.

• 419 and 443 million years ago.

Based on the image, this is the first specimen that is supposed to be a link filling the gap in the transition between fishes and four leged animals, the name of this animal is....

• Liopleurodon

• Dunkleosteus

• Chlamydoselachus anguineus

• Tiktaalik roseae

In your own words. briefly describe how animals went from living in water to living in land, taking into account intermediary specimens that allowed this change

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Did the transition from living in the water to start living in the earth happen inmediatly?

• Yes

• No

In which of the following skeletons is less recognizable the "basic pattern" of limbs in land animals?

• 
• 
• 
• 

In the year ____ the first specimen of the _________ was found ( write all the answers followed by a "-", ex: leg - body - eye)

This specimen was found in the year 1881

• Acanthostega

• Eusthenopteron

• Pederpes

• Ichthyostega

Name an animal that lives on the earth that doesn´t follow the "basic pattern" of limbs in land animals, if you know the answer, why that animal didn´t evolve like other land animals?

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