Over the last century, paleontologists have used small differences between fossil specimens to classify Triceratops into sixteen species. This classification is unjustified, however, since the specimens used to distinguish eleven of the species come from animals that lived in the same area at the same time. Which of the following, if true, would enable the conclusion of the argument to be properly drawn
A: Not every species that lived in a given area is preserved as a fossil.
B: At least one individual of every true species of Triceratops has been discovered as a fossil specimen.
C: No geographical area ever supports more than three similar species at the same time.
D: In many species, individuals display quite marked variation.
E: (E) Differences between fossil specimens of Triceratops that came from the same area are no less distinctive than differences between specimens that came from different areas.
A: Not every species that lived in a given area is preserved as a fossil.
B: At least one individual of every true species of Triceratops has been discovered as a fossil specimen.
C: No geographical area ever supports more than three similar species at the same time.
D: In many species, individuals display quite marked variation.
E: (E) Differences between fossil specimens of Triceratops that came from the same area are no less distinctive than differences between specimens that came from different areas.
举一反三
- These discoveries proved the ___(exist)of a human species who lived in the area between 700,000 and 200,000 years ago.
- The reconstruction of _____ species from fossil bones was often undertaken by museum workers.
- These discoveries proved the____ (exist) of a human species who lived in the area between 70,000 and 200,000 years ago.
- These discoveries proved the ___(exist)of a human species who lived in the area between 700,000 and 200,000 years ago.（5.0分）
- A collection of specimens that exhibit similar internal structure and chemical compositions are called mineral species