Fossil Layers Show Change Practice Test

Fossil layers show changes in life forms over time. A stratigraphic model (older at bottom, younger at top) is shown below.

Which prediction about an even deeper layer (older than Layer 4) is supported by the pattern in the fossil layers?

Layers (older  younger):

• Layer 1 (youngest): rabbit bones + grass seeds
• Layer 2: lizard bones + grass seeds
• Layer 3: lizard bones only
• Layer 4 (oldest shown): fish fossils only

Fossil layers show changes in life forms over time. A stratigraphic sequence is ordered from older (bottom) to younger (top):

• Layer 5 (oldest): no fossils found
• Layer 4: insect wing fossils
• Layer 3: insect wings + frog bones
• Layer 2: frog bones only
• Layer 1 (youngest): frog bones + bird feathers

Which claim about life change is incorrect, based on the evidence in the fossil layers?