The reading passage states that a fossil skeleton of a dinosaur named Sinosauropteryx, which well preserved in volcanic ash, included a pattern of fine lines. The passage comments that although these lines indicate that these dinosaurs had feathers, some critics have contradicted the idea by preparing some reasons of support. The lecturer, meanwhile, casts serious doubts on the presented ideas and believes that there are several strong evidence these lines are the sign of feathers.
First, the passage asserts that the fine lines might be formed after the animal's death by the decomposition of their skin into fibers and the skin fiber then misinterpreted as evidence of feathers. The professor, on the other hand, makes the argument that these fine lines are not caused due to the decomposition. She believes that according to their excavations at the same site, other animals did not represent the decomposition process on their body parts. In fact, all their bodies beautifully preserved. Thus, by comparing with other same dinosaurs, they concluded that these lines are the sign of the feathers.
Second, the reading passage declares that these lines surrounding the skeleton are much more likely to be the remains of frills, while the professor disagrees and says that there are some differences in the chemical composition of the frill and feather. She mentions that frills do not contain the particular protein that is present the feathers. Hence, as these structures, based on their experiments, did not comprise of any particular protein, they resulted that it might be feathers.
Finally, the reading passage claims that since the lines in the Sinosauropteryx fossils were mostly located along the backbone and the tail of the animal, they cannot be feathers. In contrast, the lecturer posits that there are some birds named peacocks with the same structure. These birds use their colorful tail, which is orange and white, to attract their mate and it has a displaying functionality. She thinks that the same structure in the Sinosauropteryx may foster the idea that these feathers were for displaying rather than flying.
The reading
passage
states that a fossil skeleton of a dinosaur named
Sinosauropteryx
, which
well preserved
in volcanic ash, included a pattern of fine
lines
. The
passage
comments that although these
lines
indicate that these dinosaurs had
feathers
,
some
critics have contradicted the
idea
by preparing
some
reasons of support.
The
lecturer, meanwhile, casts serious doubts on the presented
ideas
and believes that there are several strong evidence these
lines
are the
sign
of feathers.
First
, the
passage
asserts that the fine
lines
might
be formed
after the animal's death by the decomposition of their skin into fibers and the skin fiber then misinterpreted as evidence of
feathers
. The professor,
on the other hand
,
makes
the argument that these fine
lines
are not caused due to the decomposition. She believes that according to their excavations at the same site, other animals did not represent the decomposition process on their body parts. In fact, all their bodies
beautifully
preserved.
Thus
, by comparing with other same dinosaurs, they concluded that these
lines
are the
sign
of the feathers.
Second, the reading
passage
declares that these
lines
surrounding the skeleton are much more likely to be the remains of frills, while the professor disagrees and says that there are
some
differences in the chemical composition of the frill and
feather
. She mentions that frills do not contain the particular protein
that is
present the
feathers
.
Hence
, as these structures, based on their experiments, did not
comprise of
any particular protein, they resulted that it might be feathers.
Finally
, the reading
passage
claims that since the
lines
in the
Sinosauropteryx
fossils were
mostly
located along the backbone and the tail of the animal, they cannot be
feathers
.
In contrast
, the lecturer posits that there are
some
birds named peacocks with the same structure. These birds
use
their colorful tail, which is orange and white, to attract their mate and it has a displaying functionality. She
thinks
that the same structure in the
Sinosauropteryx
may foster the
idea
that these
feathers
were for displaying
rather
than flying.