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WorksheetsMystery Fossil Match #2
Total questions: 15
Worksheet time: 12mins
A structure found in ONLY 1 GROUP of organisms
Diagnostic structure
Shared structure
Evolved structure
Common structure
What DIAGNOSTIC STRUCTURE is only found in reptiles?
Backbone
1, 2, many bone structure
Skull with 2 extra holes behind the eye
4 limbs
Is the mystery fossil closely related to a crocodile?
Yes. They both have a skull with two extra holes behind the eye.
No. Its skull does not have two extra holes behind the eye.
Is the mystery fossil closely related to a spinosaurus?
Yes. They both have a skull with two extra holes behind the eye.
No. Its skull does not have two extra holes behind the eye.
What DIAGNOSTIC STRUCTURE is only found in mammals?
Different types of teeth
1, 2, many bone structure
Skull with 2 extra holes behind the eye
4 limbs
Is the mystery fossil closely related to wolves?
Yes. They both different types of teeth, a diagnostic structure for mammals.
No. Its does not have different types of teeth, a diagnostic structure for mammals.
What SHARED STRUCTURE is found in both the mystery fossil and the whale?
An ELONGATED SKULL
A BLOWHOLE
A POINTED CREST at the back of the skull
A special ARCH where powerful jaw muscles attach
What SHARED STRUCTURES are NOT found in both the mystery fossil and the wolf?
Special ARCHES where powerful jaw muscles attach
A CREST where powerful jaw muscles attach
FORWARD EYE PLACEMENT to track prey
An ELONGATED SKULL
Which species' SKULL SHAPE is most similar to the mystery fossil's?
The WHALE's skull is most similar. They both share an ELONGATED SKULL.
The WOLF'S SKULL is most similar. They both share a CREST, ARCHES, and FORWARD EYE PLACEMENT.
Which species' NOSTRIL is most similar to the mystery fossil's?
The mystery fossil's nostril is SHIFTED BACK on the skull, like the whale's BLOWHOLE.
The mystery fossil's nostril is closer to the front end of the skull, like the wolf's.
Which is NOT TRUE of WHALE TEETH?
They are good for EATING FISH.
They are INTERLOCKING and EVENLY SPACED.
They are CONE-SHAPED.
They are DIFFERENT SHAPES and SIZES.
Which is NOT TRUE of WOLF TEETH?
They are good for CRACKING BONES and SLICING TENDONS.
They are good for EATING FISH.
They are TRIANGULAR.
They are DIFFERENT SHAPES and SIZES.
Which species' TEETH are most similar to the mystery fossil's?
The WHALE'S TEETH are most similar. They are CONE-SHAPED and INTERLOCKING.
The WOLF'S TEETH are most similar. They are WIDELY SPACED, with DIFFERENT SHAPES and SIZES.
Which structure is NOT evolved for life in the water?
TRIANGULAR TEETH designed for slicing tendons and crushing bones.
WIDE, STRONG tailbones
NOSTRIL SHIFTED BACK on the skull
SHORTENED limbs
Which structure would you NOT expect in the common ancestor of wolves, whales, and the mystery fossil?
4 limbs
Blowhole
Backbone
1, 2, many bone structure
