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Archaeolithophyllum is a genus of conceptacle-bearing red alga that falls in the coralline stem group. It somewhat resembles Lithophyllum.[1][2]

As of today, Archaeolithophyllum is the only Palaeozoic coralline to bear clear conceptacles,[3] although the earlier Graticula does bear reproductive structures.[4]

It mineralized using aragonite.[3] Its conceptacles are cone-shaped protrusions that extend outwards from the thallus surface and have a single central opening.[5] It probably encrusted muddy or sandy surfaces.[5]

See also[edit]


  1. ^ Harlan Johnson, J. (1956). "Archaeolithophyllum, a new genus of Paleozoic Coralline algae". Journal of Paleontology. 30 (1): 53–55. doi:10.2307/1300377 (inactive 2017-01-15). JSTOR 1300377. 
  2. ^ Xiao, S.; Knoll, A. H.; Yuan, X.; Pueschel, C. M. (2004). "Phosphatized multicellular algae in the Neoproterozoic Doushantuo Formation, China, and the early evolution of florideophyte red algae". American Journal of Botany. 91 (2): 214–227. doi:10.3732/ajb.91.2.214. PMID 21653378. 
  3. ^ a b Cozar, P.; Vachard, D. (2006). "A new Mississippian red alga from south-western Spain". Geobios. 39 (6): 791. doi:10.1016/j.geobios.2005.09.002. 
  4. ^ Brooke, C.; Riding, R. (1998). "Ordovician and Silurian coralline red algae". Lethaia. 31 (3): 185. doi:10.1111/j.1502-3931.1998.tb00506.x. 
  5. ^ a b John L. Wray (1964). "Archaeolithophyllum, an Abundant Calcareous Alga in Limestones of the Lansing Group (Pennsylvanian), Southeastern Kansas". Kansas Geological Survey Bulletin. 170 (1).