Question

introduction
laboratory simulation
labels
early
arthropod
(trilobite)
early bird
early
dinosaur
early human
fossil fish
with transitional
amphibians
( tiktaalik)
methods
reset
my notes
show labels
verify
phases
1
phase 1:
identifying the location of
fossils
complete the following steps:
1
place fossils in layers of rock
according to order in which
organisms evolved
2
select verify to check answers
go to phase 2

Explanation:

Step1: Recall fossil succession principle

Fossil succession states that older fossils are in lower (deeper) rock layers, younger in upper layers. Evolution order: Early arthropod (trilobite) → Fossil fish with transitional amphibians → Early dinosaur → Early bird → Early human.

Step2: Match fossils to rock layers

• Deepest layer (oldest): Early arthropod (trilobite) fossil.
• Next: Fossil fish with transitional amphibians.
• Next: Early dinosaur.
• Next: Early bird.
• Uppermost (youngest): Early human.

(Visually check rock layer depths: The lowest orange dot (deepest) → Early arthropod; then next up → Fossil fish; then → Dinosaur; then → Bird; then highest → Early human.)

Answer:

From deepest (oldest) to uppermost (youngest) rock layers:

1. Early arthropod (trilobite)
2. Fossil fish with transitional amphibians (Tiktaalik)
3. Early dinosaur
4. Early bird
5. Early human