Why are there so many pregnant females and young at
Holzmaden when they are so rare elsewhere? The quality of
preservation is almost unmatched, and quarry operations have
been carried out carefully with an awareness of the value of the
fossils. But these factors do not account for the interesting
question of how there came to be such a concentration of
pregnant ichthyosaurs in a particular place very close to their time
of giving birth.
23. The passage supports which of the following conclusions?
(A) Some species of ichthyosaurs decayed more rapidly than other species.
(B) Ichthyosaur newborns are smaller than other newborn marine reptiles.
(C) Ichthyosaurs were more advanced than terrestrial creatures.
(D) Ichthyosaurs may have gathered at Holzmaden to give birth.
24. The word "they" in line 4 refers to
(A) skeletons
(B) scavengers
(C) creatures
(D) environments
25. All of the following are mentioned as factors that encourage fossilization EXCEPT the
(A) speed of burial
(B) conditions of the water
(C) rate at which soft tissues decay
(D) cause of death of the animal.
26. Which of the following is true of the fossil deposits discussed in the passage?
(A) They include examples of newly discovered species.
(B) They contain large numbers of well-preserved specimens
(C) They are older than fossils found in other places
(D) They have been analyzed more carefully than other fossils.
27. The word "outstanding" in line 18 is closest in meaning to
(A) extensive
(B) surprising
(C) vertical
(D) excellent
28. The word "site" in line 22 is closest in meaning to
(A) example
(B) location
(C) development
(D) characteristic
29. Why does the author mention the specimen preserved in the birth canal (line 26)?
(A) To illustrate that the embryo fossils are quite advanced in their development
(B) To explain why the fossils are well preserved
(C) To indicate how the ichthyosaurs died
(D) To prove that ichthyosaurs are marine animals.
30. The word "they" in line 30 refers to
(A) pregnant females and young
(B) quarry operations
(C) the value of the fossils
(D) these factors