Recent historiography of 19th century biology supports the revision of
two traditional doctrines about the history of biology. First, the mo
st important and widespread biological debate around the time of Darwi
n was not evolution versus creation, but biological functionalism vers
us structuralism. Second, the ''idealist'' and ''typological'' structu
ralist theories of the time were not particularly anti-evolutionary, T
ypological theories provided argumentation and evidence that was cruci
al to the refutation of Natural Theological creationism. The contrast
between functionalist and structuralist approaches to biology continue
s today, and the historical misunderstanding of 19th century typologic
al biology may be one of its effects. This historical case can shed li
ght on current controversies regarding the relevance of developmental
biology to evolution.