- Olenid trilobites: the oldest known chemoautotrophic symbionts?R Fortey
Department of Paleontology, Natural History Museum, Cromwell Road, London SW7 5BD, United Kingdom
Proc Natl Acad Sci U S A 97:6574-8. 2000..Geochemical and field evidence is consistent with this interpretation. Olenids occupied their specialized habitat for 60 million years until their extinction at the end of the Ordovician...
- A Devonian trilobite with an eyeshadeRichard Fortey
Department of Palaeontology, The Natural History Museum, London SW7 5BD, UK
Science 301:1689. 2003