Certain foraminifera (shellless protozoa) have inconsistent fossil records. The mode of evolution they represent is punctuated equilibrium.
Punctuated equilibrium is an evolutionary theory proposed by North American paleontologists Niles Eldredge and Stephen Jay Gould in 1972, which proposes that most populations of sexually reproducing organisms experience little change over geologic time, and when evolutionary changes in phenotype occur , they occur in a rare and localized way in rapid speciation events called cladogenesis.
With this information, we can conclude that in gradualism mutations occur slowly and gradually so that the appearance of new species occurs in a subtle way. In turn, in punctuated equilibrium, mutation rates are faster and when a new species appears, this event occurs in small jumps.
Learn more about Punctuated equilibrium in brainly.com/question/20846904
#SPJ1
