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Which one of the following is not a living fossil -
A
King crab
B
Sphenodon
C
Archaeopteryx
D
Peripatus
Detailed Solution
A living fossil is a living organism that has remained almost unchanged over millions of years and closely resembles its fossil ancestors.
The king crab (Limulus) is a living fossil among arthropods.
Sphenodon (the tuatara of New Zealand) is a living fossil among reptiles.
Peripatus is a living animal that connects annelids and arthropods and is also regarded as a living fossil.
Archaeopteryx is an extinct animal known only from fossils found in the Jurassic rocks of Bavaria, Germany.
It is a fossil connecting link (missing link) between reptiles and birds, not a living fossil.
So the one that is not a living fossil is Archaeopteryx.
The king crab (Limulus) is a living fossil among arthropods.
Sphenodon (the tuatara of New Zealand) is a living fossil among reptiles.
Peripatus is a living animal that connects annelids and arthropods and is also regarded as a living fossil.
Archaeopteryx is an extinct animal known only from fossils found in the Jurassic rocks of Bavaria, Germany.
It is a fossil connecting link (missing link) between reptiles and birds, not a living fossil.
So the one that is not a living fossil is Archaeopteryx.