LIEBERMAN, Bruce S. Phylogenetic analysis of some basal early Cambrian trilobites, the biogeographic origins of the Eutrilobita, and the timing of the Cambrian radiation. S. 692–708. Journal of Paleontology [online]. 2002-07. Roč. 76, čís. 4, s. 692–708. Dostupné online. DOI10.1666/0022-3360(2002)076<0692:PAOSBE>2.0.CO;2. (anglicky)
doi.org
dx.doi.org
LIEBERMAN, Bruce S. Phylogenetic analysis of some basal early Cambrian trilobites, the biogeographic origins of the Eutrilobita, and the timing of the Cambrian radiation. S. 692–708. Journal of Paleontology [online]. 2002-07. Roč. 76, čís. 4, s. 692–708. Dostupné online. DOI10.1666/0022-3360(2002)076<0692:PAOSBE>2.0.CO;2. (anglicky)
phys.org
University of California - Riverside. 450-million-year-old sea creatures had a leg up on breathing. phys.org [online]. 2021-03-31 [cit. 2023-05-10]. Dostupné online. (anglicky)