Terry Whittaker / Pete Turner weighs Pine marten (Martes martes). in trap. Part of Pine marten research by the Waterford Institute of Technology, Republic of Ireland. August 2008

David Fleetham / Sea snail (Thyca crystallina), two growing on host Blue sea star (Linckia laevigata). Philippines.

Paul D Stewart / The history of life, proposed by Swiss-American naturalist Louis Agassiz. Agassiz would disagree strongly with Darwin's theory of evolution. This diagram from 1855 shows how he understood biological...

Paul D Stewart / Illustration of mythical Unicorn, also known as Monoceros, by engraver Matthaus Merian 'the Elder', hand coloured copperplate engravings from 'Historia Naturalis', 1657.

Paul D Stewart / Illustration of various types of mythical unicorns, also known as monoceros, by engraver Matthaus Merian 'the Elder', hand colored copperplate engravings from Historia Naturalis , 1657.

Paul D Stewart / Illustration of a Vampire bat (Vespertilio vampyrus) by Heath published 1800 in George Shaw 'General Zoology or Systematic Zoology', in which the Vampire bats feeding habits are described. However th...

Paul D Stewart / Illustration of Peeping frog - now commonly called Northern Leopard frog (Rana pipiens) plate by Hill. From George Shaw 'General Zoology or Systematic Natural History 1802.

Paul D Stewart / Illustration of a Black headed uakari (Cacajao melanocephalus) engraving from a sketch by Alexander von Humboldt and Aime Bonpland, included in their volume on comparative zoology and anatomy. The ske...

Paul D Stewart / Illustration of Great auk (Pinguinus impennis) swimming, from Welsh naturalist Thomas Pennant's book 'British Zoology' 1776 .This species, now extinct was last sighted in 1852 on the Grand Banks of Ne...

Paul D Stewart / Portrait of George Shaw (175 - 1813) English zoologist most famous for his illustrated encyclopaedic zoology books such as 'General Zoology'(16 vol s 1809-1826) and with Nodder 'The Naturalist's Mis...

John Cancalosi / Spotted owl (Strix occidentalis) female and young on branch, Arizona, USA.

Terry Whittaker / Pine marten (Martes martes) finding bait in plastic tube, left to collect hair samples for DNA analysis to study the interrelatedness and distribution of pine martens. Pine marten research by the Wate...