Fossils Worksheets - Free Printable

Let's solve this step-by-step by identifying each fossil image and matching it with the correct type from the Word Bank.

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🔍 Understanding the Fossil Types:

1. Cast fossils: A mold is filled with sediment or minerals, forming a replica of the original organism.
2. Mold fossils: An impression left in rock after an organism decays, preserving the shape.
3. Trace fossils: Evidence of activity (e.g., footprints, burrows), not the organism itself.
4. Petrified fossils: The original material is replaced by minerals, turning into stone.
5. True form fossils: Preserved actual remains (like bones or shells) that retain their original structure.
6. Body fossils: Remains of the actual body parts (bones, shells, etc.) preserved.
7. Carbon film fossils: Thin carbon residue of soft tissues on rock surface.
8. Amber: Resin from trees that traps organisms and preserves them in 3D.
9. Preserved remains fossils: Organisms preserved in ice, tar, or other substances without decay.

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✔ Now, let’s match each image:

#### Row 1:
1. Image 1 (Shell) → Looks like a mold fossil (impression of a shell in rock).
✘ But labeled as "Cast fossils" — wait! This is actually a cast, because it's a solid replica formed in the mold.
✔ So, Cast fossils → Correct label.

2. Image 2 (Fish skeleton in rock) → Shows detailed outline, but appears to be an imprint.
→ This is a Mold fossil (impression of the fish).
✔ Labeled as "Mold fossils" → Correct.

3. Image 3 (Footprint in rock) → This is evidence of movement.
→ Trace fossil (a footprint).
✔ Labeled as "Trace fossils" → Correct.

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#### Row 2:
4. Image 4 (Detailed fossilized skeleton) → This looks like a petrified fossil (bone replaced by minerals).
→ Petrified fossils → ✔ Correct label.

5. Image 5 (Dragonfly in transparent rock) → This is a true form fossil — the insect is preserved in detail.
→ But note: if it's in amber, it would be amber. However, the rock looks like limestone.
Wait — this one is not amber; it's a true form fossil — the actual remains are preserved in rock.
✔ Labeled as "True form fossils" → Correct.

6. Image 6 (Fish fossil with dark outline) → This looks like a carbon film fossil (only carbon remains).
→ But labeled as "Body fossils"? That might be incorrect.
✘ Let's check: Body fossils refer to hard parts like bones or shells. This seems more like a carbon film.
→ Actually, carbon film fossils are a subtype of body fossils, but they’re specifically defined by thin carbon residue.
→ So, this should be Carbon film fossils.
✘ But it's currently labeled "Body fossils" — so this is incorrect.

➤ Correction: Image 6 should be Carbon film fossils.

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Wait — let's re-check all labels carefully.

We have 9 images and 9 labels, but some labels may be swapped.

Let’s go image by image with correct identification.

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🧩 Step-by-Step Matching:

#### Image 1: Shell-like object
- Looks like a cast fossil (solid copy of a shell).
- ✔ Label: Cast fossils → ✔️ Correct

#### Image 2: Fish impression in rock
- Clearly a mold fossil (the space where the fish was).
- ✔ Label: Mold fossils → ✔️ Correct

#### Image 3: Footprint in rock
- Trace of activity → Trace fossils
- ✔ Label: Trace fossils → ✔️ Correct

#### Image 4: Detailed skeleton (possibly dinosaur)
- Bone structure visible, mineralized → Petrified fossils
- ✔ Label: Petrified fossils → ✔️ Correct

#### Image 5: Dragonfly in rock
- This is a true form fossil — the insect is preserved in detail, possibly in fine sediment.
- ✔ Label: True form fossils → ✔️ Correct

#### Image 6: Fish with dark outline (no bones visible)
- This is a carbon film fossil — only carbon remains.
- ✘ Currently labeled "Body fossils" → Incorrect
- Should be Carbon film fossils

→ So, Image 6 should be Carbon film fossils

But wait — "Body fossils" is already used in the word bank. We need to assign correctly.

So far:
- Cast fossils → Image 1
- Mold fossils → Image 2
- Trace fossils → Image 3
- Petrified fossils → Image 4
- True form fossils → Image 5
- Carbon film fossils → Image 6
- Amber → ?
- Preserved remains fossils → ?

Now we have two left: Amber and Preserved remains fossils

#### Image 7: Fish fossil with dark outline (similar to Image 6?)
Wait — there are two fish fossils.

Let’s look again.

Actually, the layout has:

- Row 1: Shell, Fish (mold), Footprint
- Row 2: Skeleton, Dragonfly, Fish (dark)
- Row 3: Fish (another), Amber, Ice block

Ah! I missed that.

Let me list all images clearly:

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📋 Full List of Images:

1. Image 1: Shell (solid, raised) → Cast fossil
2. Image 2: Fish imprint → Mold fossil
3. Image 3: Footprint → Trace fossil
4. Image 4: Dinosaur skeleton → Petrified fossil
5. Image 5: Dragonfly in rock → True form fossil
6. Image 6: Fish with dark outline → Carbon film fossil
7. Image 7: Another fish fossil → Body fossil?
8. Image 8: Amber with insects → Amber
9. Image 9: Animal in ice → Preserved remains fossil

Now let’s fix the labeling.

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✔ Final Correct Labels:

| Image | Description | Correct Label |
|-------|-------------|---------------|
| 1 | Shell (raised) | Cast fossils |
| 2 | Fish impression | Mold fossils |
| 3 | Footprint | Trace fossils |
| 4 | Dinosaur skeleton (mineralized) | Petrified fossils |
| 5 | Dragonfly in rock | True form fossils |
| 6 | Dark fish outline (carbon) | Carbon film fossils |
| 7 | Fish fossil (preserved body) | Body fossils |
| 8 | Insects in golden resin | Amber |
| 9 | Animal in ice | Preserved remains fossils |

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✘ Current Labels in Image:

- Image 6 is labeled "Body fossils" → ✘ Wrong (should be Carbon film fossils)
- Image 7 is labeled "Carbon film fossils" → ✘ Wrong (should be Body fossils)

So the labeling is incorrect in the worksheet.

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✔ Corrected Version:

We need to swap Image 6 and Image 7 labels.

#### Correct Assignments:

1. Image 1: Cast fossils → ✔️
2. Image 2: Mold fossils → ✔️
3. Image 3: Trace fossils → ✔️
4. Image 4: Petrified fossils → ✔️
5. Image 5: True form fossils → ✔️
6. Image 6: Carbon film fossils → ✔ (was incorrectly labeled "Body fossils")
7. Image 7: Body fossils → ✔ (was incorrectly labeled "Carbon film fossils")
8. Image 8: Amber → ✔️
9. Image 9: Preserved remains fossils → ✔️

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🟩 Summary of Corrections:

- Swap labels for Image 6 and Image 7.
- Image 6 (dark fish outline) → Carbon film fossils
- Image 7 (fish fossil with bones) → Body fossils

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✔ Final Answer:

The worksheet has a labeling error in the bottom row:

- The fossil in Image 6 (dark fish outline) is a carbon film fossil.
- The fossil in Image 7 (fish with visible skeleton) is a body fossil.

So, the correct labels are:

| Image | Correct Label |
|-------|----------------|
| 1 | Cast fossils |
| 2 | Mold fossils |
| 3 | Trace fossils |
| 4 | Petrified fossils |
| 5 | True form fossils |
| 6 | Carbon film fossils |
| 7 | Body fossils |
| 8 | Amber |
| 9 | Preserved remains fossils |

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💡 Explanation:

- Carbon film fossils occur when organic matter decomposes, leaving behind a thin carbon layer.
- Body fossils include actual hard parts like bones or shells preserved in rock.
- Amber preserves organisms in tree resin.
- Preserved remains fossils are organisms frozen in ice, tar, or asphalt.

✔ The corrected version matches scientific classification.

Let me know if you'd like a printable corrected version!