All but which of the following were important in the reef environment of the Ordovician?
A) bryozoa
B) stromatoporoids
C) tabulate coral
D) crinoids
E) rugose coral
Correct Answer:
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Q31: What does the name Placoderm mean?
A)plate-skinned
B)bony skin
C)scaly
Q38: Pelagic organisms can be divided into the
Q40: Three examples of phytoplankton are _,_,and _.
Q41: Archaeocyathids can be characterized by all except
Q41: _ were warm-blooded, so they were able
Q42: Which of the following is not used
Q44: Which of the following is not one
Q46: The two most important seedless vascular plants
Q47: Hox genes
A) control the formation of shells.
B)
Q48: Which of the following is not an
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