The fossil record of insects documents a high proportion of modern higher-level taxa (67% for families), although this capture rate drops off considerably for lower-level taxa. This record is Lagerstatten-driven, and is deployed by complementary, parallel body- and trace-fossil components that...

The morphological diversity of life has captivated systematists in the construction of classifications, embryologists in the study of development, and evolutionists in the formulation of theories of organic change. In a century marked by the advances of molecular biology, has the discipline of...