After the capture of a living Coelacanth, evolutionists realized
that this was not a transitional form. So they next settled on
depicting the fish E. foordi as a transitional “missing link.”
Evolutionists maintained that that the tailed water frog was
descended from E. foordi. However, anatomical comparisons of
tailed water frog and Eusthenopteron revealed profound
differences between the two. This meant that evolutionists had
to suppose another transitional form between them. However, no
skeleton belonging to this theoretical transition between
Eusthenopteron foordi and the tailed water frog Icthyostega has
ever been found. Now, the two favorite subjects for most of the
contemporary evolutionary scenarios regarding tetrapod origins
are Eusthenopteron (an extinct fish) and Acanthostega (an
extinct amphibian). Robert Carroll, in his Patterns and
Processes of Vertebrate Evolution, makes comments on these
allegedly related forms: Eusthenopteron and Acanthostega may be
taken as the end points in the transition be