Assertion: crustacean's limb | /r/HasProperty | biramous
Facets:
Source sentences:
text: Crustaceans are the only arthropods to have biramous limbs.
text: However, whether the ancestral limb was uniramous or biramous is far from a settled debate.
text: Proponents of polyphyly argued the following: that the similarities between these groups are the results of convergent evolution, as natural consequences of having rigid, segmented exoskeletons; that the three groups use different chemical means of hardening the cuticle; that there were significant differences in the construction of their compound eyes; that it is hard to see how such different configurations of segments and appendages in the head could have evolved from the same ancestor; and that crustaceans have biramous limbs with separate gill and leg branches, while the other two groups have uniramous limbs in which the single branch serves as a leg.