Transition Fossils

Select ALL the evidence that supports the idea that four-legged animals came from fish.

• All are vertebrates

• The embryos and DNA are similar

• The fossil record shows relatedness

• They have all the same bones

Tags

NGSS.MS-LS4-1

NGSS.MS-LS4-2

NGSS.MS-LS4-3

Why did scientists lead by Shubin decide to search in the Canadian Arctic for transition fossils? Select all that apply.

• Age of the rocks

• Kind of the rock there

• Other parts of the world had been explored already

• The climate/weather was the best there

Tags

NGSS.MS-ESS2-3

If scientists knew the relative age of the fossil they were looking for, should they search for it in rocks that are...

• Younger than the fossil?

• Same age as the fossil?

• Older than the fossil?

Tags

NGSS.MS-ESS1-4

NGSS.MS-ESS2-3

What characteristics of Tiktaalik are fish-like? Select all that apply.

• Fins

• Neck

• Scales

• Flat head

Tags

NGSS.MS-LS4-2

What characteristics of Tiktaalik make it a tetrapod? Select all that apply.

• Eyes on the top of head

• Flat head

• Hip bones

• A neck

• Tetrapod-like ribs

Tags

NGSS.MS-LS4-2

How long did it take for vertebrates to transition from water to land?

• Thousands of years

• Hundreds of thousands of years

• Millions of years

• A billion years

Tags

NGSS.MS-LS4-1

Why is the one bone/two bone/many bones/digits limb pattern important for origin of the tetrapods?

• It completes the fossil record.

• It shows how fish developed legs once on land to become tetrapods.

• It can show how all tetrapods still have basic fin bones.

• It can show a pattern of relatedness over time.

Tags

NGSS.MS-LS4-1

NGSS.MS-LS4-2

When do scientists believe Tikaalik lived?

• 380 MYA

• 375 MYA

• 370 MYA

• 365 MYA

• 360 MYA

Tags

NGSS.MS-ESS1-4