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((cite journal))
: CS1 maint: multiple names: authors list (link)Seilacher, Adolf (2007). Trace fossil analysis. Springer. p. 226.
Treptichnus pedum have very big time range: Uppermost Precambrian to Middle Cambrian, Lower Ordovician! Alecsey(Alnagov (talk) 09:02, 9 May 2009 (UTC))
JENSEN, Sören (2001). "Trace fossils Didymaulichnus cf. tirasensis and Monomorphichnus isp. from the Estonian Lower Cambrian, with a discussion on the Early Cambrian ichnocoenoses of Baltica" (PDF). Proc. Estonian Acad. Sci. Geol. 50 (2): 75–85. ((cite journal))
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DZIK, J. (2007). "The Verdun Syndrome: simultaneous origin of protective armour and infaunal shelters at the Precambrian–Cambrian transition". In VICKERS-RICH, P. & KOMAROWER, P. (ed.). The Rise and Fall of the Ediacaran Biota (PDF). Geological Society, London, Special Publications. Vol. 286. pp. 405–414.((cite book))
: CS1 maint: multiple names: editors list (link)
DZIK, Jerzy (2005). "Behavioral and anatomical unity of the earliest burrowing animals and the cause of the "Cambrian explosion"" (PDF). Paleobiology. 31 (3): 503–521. doi:10.1666/0094-8373(2005)031[0503:BAAUOT]2.0.CO;2.((cite journal))
: CS1 maint: date and year (link) - systematica of "Treptichnus pedum" traces; redescription of type species Treptichnus pedum (T. pedum from GSSP) as Podolodes pedum; interpretation Didymaulichnus cf. tirasensis as treptichnid. Aleksey(Alnagov (talk) 20:38, 10 May 2009 (UTC))
Source: A.Yu. Rozanov, V.V. Khomentovsky, Yu.Ya. Shabanov, G.A. Karlova, A.I. Varlamov, V.A. Luchinina, T.V. Pegel’, Yu.E. Demidenko, P.Yu. Parkhaev, I.V. Korovnikov, N.A. Skorlotova (2008). "To the problem of stage subdivision of the Lower Cambrian". Stratigraphy and Geological Correlation. 16 (1): 1–19. doi:10.1007/s11506-008-1001-3.((cite journal))
: CS1 maint: multiple names: authors list (link)
Aleksey(Alnagov (talk) 19:26, 10 May 2009 (UTC))
Series | Stage | Stage boundary stratotype and its index fossil species | Age Ma | ||
---|---|---|---|---|---|
traditional | with sub-trilobite series | ||||
O | Lower | Tremadocian | GSSP: Green Point Section, western Newfoundland. Ratified 2000. FAD of conodont Iapetognathus fluctivagus. |
488.3 ±1.7 | |
C A M B R I A N |
Furongian | Stage 10 | FAD of trilobite Lotagnostus americanus |
~492 | |
Stage 9 | FAD of trilobite Agnostotes orientalis |
~496 | |||
Paibian | GSSP: Wuling Mountains, Huayuan County, NW Hunan Province, China. Ratified 2003. FAD of trilobite Glyptagnostus reticulatus. |
~499 | |||
Middle | Series 3 | Guzhangian | GSSP: Louyixi, Guzhang County, NW Hunan Province, S. China. Ratified 2008. FAD of trilobite Lejopyge laevigata. |
~503 | |
Drumian | GSSP: Drum Mountains, Millard County, Utah, USA. Ratified 2006. FAD of trilobite Ptychagnostus atavus. |
~506.5 | |||
Stage 5 | FAD of trilobite Oryctocephalus indicus or Ovatoryctocara granulate |
~510 | |||
Lower | Series 2 | Stage 4 | FAD of trilobite Olenellus or Redlichia |
~515 | |
Stage 3 | FAD of first trilobites |
~521 | |||
Terreneuvian | Stage 2 | FAD of Small Shelly Fossils, or archaeocyathid species |
~528 | ||
Fortunian | GSSP: Fortune Head, SE Newfoundland,Canada. Ratified 1992. FAD of trace fossil Treptichnus pedum. |
542.0 ±1.0 | |||
EDIACARAN |
You can use and modify this scheme. Aleksey (Alnagov (talk) 13:31, 23 August 2009 (UTC))