@phdthesis{SchemmGregory2010,
  author      = {Mena-Daniela Schemm-Gregory},
  title       = {Phylogeny, taxonomy and palaeobiogeography of delthyridoid Spiriferids (Brachiopoda, Silurian to Devonian)},
  type        = {doctoralthesis},
  school      = {Universit{\"a}tsbibliothek Johann Christian Senckenberg},
  year        = {2010},
}