Talk:Paleodictyon nodosum

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Bitmap graphics[edit]

What are Bitmap Graphics made of. — Preceding unsigned comment added by 86.169.74.216 (talk) 17:29, 28 November 2011 (UTC)

Hello, not sure about what you are asking, but I think this article maybe be useful to answer your question. I suggest you to create an account here on Wikipedia and feel free to contact me on my talk page in case of questions on how to use Wikipedia. --★ Pikks ★ MsG 19:06, 28 November 2011 (UTC)

Removed "implications" section[edit]

The following section appears to be in violation of the "No Original Research" policy (WP:NOR). The impact of P. nodosum on our theories about life does not appear to have been published or discussed in the literature, anywhere, ever; it is therefore evidently an original contribution, and I move it here to the talk page to at least give its author a chance to provide a citation (e.g., for the last three sentences, which presuppose that these fossils are created by animals). Please do NOT move this text back into the article without supporting documentation.

George Wald presented the idea that the 4 necessities of life were:[1]

  1. The presence of liquid water
  2. Elements for metabolism and reproduction
  3. A source of energy
  4. Suitable environmental conditions

Many of these ideas are fairly vague, and while the general principles hold true, how we define each part of this set of rules has been challenged by Paleodictyon nodosum.

It was once assumed that the only source of energy that supported life was the sun. However the discovery of chemosynthetic bacteria in giant tube worms introduced a new source of energy, chemicals from within the Earth.[2] However this discovery led people to believe that creatures could only survive in these environments when the vents were active. However Paleodictyon nodosum can survive even after the extinction of these vents. This challenges our ideas of what a suitable environment truly means. The fact that a creature can survive in an area where there is extreme pressure and almost no biomass gives us a new appreciation of the adaptations that animals have developed to survive in even the most inhospitable locations on the planet.

  1. ^ Wald, George; McDougall, C; Inchley, CJ (1964). "The origins of life". National Academy of Science USA. 52 (2): 595–611. Bibcode:1964PNAS...52..595W. PMC 300313Freely accessible. PMID 16591211. doi:10.1073/pnas.52.2.595.  Unknown parameter |month= ignored (help)
  2. ^ Cavanaugh, Colleen (03). "Symbiotic chemoautotrophic bacteria in marine invertebrates from sulphide-rich habitats". Nature. 302 (5903): 58–61. Bibcode:1983Natur.302...58C. doi:10.1038/302058a0. Retrieved 25 November 2011.  Unknown parameter |month= ignored (help); Check date values in: |date=, |year= / |date= mismatch (help)