Penguins… but more to come!

by Greg Mayer Jerry gave us our first taste of Antarctic wildlife from his expedition earlier today, showing some penguins on an iceberg. I think we can expect more shortly, but in the meantime here are some Humboldt Penguins (Spheniscus humboldti), native to the coasts of Peru and Chile. These are at the Milwaukee Zoo, […]

Why exaptation is an unnecessary term in the science of form

by Greg Mayer The most important finding of vertebrate comparative morphology and paleontology is that most of evolution is the gradual, adaptive, modification of pre-existing structures (or, better, pre-existing developmental programs, which result in the structures).  The point about pre-existing structures is very important– the history of evolution is to a great extent the history […]