The passage asserts that a discovered fossil of a type of dinosaur named Sinosauropteryx shows that that animal had not feathers and provided three reasons of support. The lecture, on the contrary, debunks this idea and says that all evidences in the area is strong and the mentioned reasons provided by the passage is not convincing.
First, the article states that the found remain is fibers which were decomposed from animal skin is similar to lines of feathers after the animal died. The lecture casts doubt on this point by explaining that there was no solid evidence of other animals in the same region while volcanic ashes preserved feathers in the regions. Since, it shows that those lines are the remain of feather not fibers.
Second, it is possible that the remained lines are frills, an ornamental fan-shaped structure, which grows out of Sinosauropteryx's body, according to the reading. The professor disavows this point by saying that frills and feathers have different chemical contents. The feather consists of a type of protein named Betacaraton while frills has no such substances.
Third, the author of the passage claims that feathers on the body of Sinosauropteryx were not functional since they were used to regulate animal's temperature. The professor repudiates this passage' claim reasoning that other animals used those feather as a tool to attract mate. She also states that further analysis reveals that Sinosauropteryx had colorful feather utilizing for display. so this shows that those lines are a great support for Sinosauropteryx's feathers. 
The passage asserts that a discovered fossil of a type of dinosaur named  
Sinosauropteryx
  shows
 that that  
animal
 had not  
feathers
 and provided three reasons of support. The lecture,  
on the contrary
, debunks this  
idea
 and says that all evidences in the area is strong and the mentioned reasons provided by the passage is not convincing. 
First
, the article states that the found remain is fibers which  
were decomposed
 from  
animal
 skin is similar to  
lines
 of  
feathers
 after the  
animal
  died
. The lecture casts doubt on this point by explaining that there was no solid evidence of other  
animals
 in the same region while volcanic ashes preserved  
feathers
 in the regions.  
Since
, it  
shows
 that those  
lines
 are  
the remain
 of  
feather
 not fibers.
Second, it is possible that the remained  
lines
 are frills, an ornamental fan-shaped structure, which grows out of  
Sinosauropteryx
's body, according to the reading. The professor disavows this point by saying that frills and  
feathers
 have  
different
 chemical contents. The  
feather
 consists of a type of protein named  
Betacaraton
 while frills has no such substances.
Third, the author of the passage claims that  
feathers
 on the body of  
Sinosauropteryx
 were not functional since they were  
used to regulate
 animal's temperature. The professor repudiates this passage' claim reasoning that other  
animals
  used
 those  
feather
 as a tool to attract mate. She  
also
 states that  
further
 analysis reveals that  
Sinosauropteryx
 had colorful  
feather
 utilizing for display.  
so
 this  
shows
 that those  
lines
 are a great support for  
Sinosauropteryx
's  
feathers
.