Trichophycus pedum (or Treptichnus pedum; formerly Phycodes pedum) is regarded as the earliest widespread complex trace fossil. Trace fossils, also called ichnofossils (ˈɪknoʊfɒsɨl ιχνος or ikhnos meaning "trace" or "track" are geological records of biological Its earliest appearance, which was contemporaneous with the last of the Ediacaran biota, is used to define the dividing line between the Ediacaran and Cambrian Periods. The Ediacara (ˌiːdɪˈækərə formerly Vendian) biota are ancient lifeforms of the Ediacaran Period which represent the earliest known complex The Ediacaran Period (ˌiːdiˈækərən named after the Ediacara Hills of South Australia) is the last geological period of the Neoproterozoic The Cambrian is a geologic period and system that began about Ma (million years ago at the end of the Proterozoic eon and ended about Ma with [1] However, it has since been discovered below the originally defined GSSP[2]. A Global Boundary Stratotype Section and Point, abbreviated GSSP, is an internationally agreed upon stratigraphic section which serves as the reference section for
Trichophycus pedum has a fairly complicated and distinctive burrow pattern: along with a central, sometimes sinuous or looping burrow. A burrow is a hole or tunnel dug into the ground by an Animal to create a space suitable for habitation temporary refuge or as a byproduct of locomotion It was made by successive probes upward through the sediment in search of nutrients, generating a trace pattern reminiscent of a fan or twisted rope. Sediment is any particulate matter that can be transported by fluid flow and which eventually is deposited as a layer of solid particles on the bed or bottom of a body of [3] It is considered more complex than earlier Ediacaran fauna; and these trace fossils, which occur worldwide, are usually found in strata above them. The Ediacara (ˌiːdɪˈækərə formerly Vendian) biota are ancient lifeforms of the Ediacaran Period which represent the earliest known complex Trace fossils, also called ichnofossils (ˈɪknoʊfɒsɨl ιχνος or ikhnos meaning "trace" or "track" are geological records of biological In Geology and related fields a stratum (plural strata) is a layer of rock or Soil with internally consistent characteristics that distinguishes [4]
Since the Trichophycus animal presumably lacked any hard anatomical features, such as shells or bones, only its burrows have been found. Bones are rigid organs that form part of the Endoskeleton of Vertebrates They function to move support and protect the various organs of the body produce Its morphology and relationship to modern animals is therefore unknown, and some dispute even its inclusion within the animal kingdom. Comparative anatomy is the study of similarities and differences in the Anatomy of Organisms It is closely related to Evolutionary biology and Phylogeny [5]
References
- ^ Subcommission on Neoproterozoic Stratigraphy - URL retrieved November 27, 2006
- ^ Gehling, James (March 2001). Events 1095 - Pope Urban II declares the First Crusade at the Council of Clermont Year 2006 ( MMVI) was a Common year starting on Sunday of the Gregorian calendar. "Burrowing below the basal Cambrian GSSP, Fortune Head, Newfoundland". Geological Magazine 138 (2): 213–218. doi:. A digital object identifier ( DOI) is a permanent identifier given to an Electronic document.
- ^ McMenamin, Mark A. ; Dianna L. McMenamin [1990-01-15]. The Emergence of Animals. Columbia University Press. ISBN 0-231-06647-3.
- ^ Life in the Cambrian. Retrieved on 2006-03-09. Year 2006 ( MMVI) was a Common year starting on Sunday of the Gregorian calendar. Events 590 - Bahram Chobin is crowned as king Barham VI of Persia.
- ^ Altermann, Wladyslaw [2002-07-01]. Precambrian Sedimentary Environments. Blackwell Publishing. ISBN 0-632-06415-3.
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