Cambrian Stage 3
Cambrian Stage 3 is the still unnamed third stage of the Cambrian. It succeeds Cambrian Stage 2 and precedes Cambrian Stage 4, although neither its base or top have been formally defined yet. The lower boundary is loosely defined as the first appearance of trilobites which happened around ~521 million years ago. The upper boundary and beginning of Cambrian Stage 4 is informally defined as the first appearance of the trilobite genera Olenellus or Redlichia around ~514 million years ago.
Naming
The International Commission on Stratigraphy has not officially named the 3rd stage of the Cambrian. Sometimes this stage is referred to as "Atdabanian" which is used by geologists working in Siberia.
Biostratigraphy
The oldest trilobites known is Lemdadella which appears at the beginning of the Fallotaspis zone.
References
Stage
Stage or stages is an abstract object often associated with either theater and scene or point of progress.
It may also refer to:
Acting
Music
Stage (film)
Stage is a 1951 Bollywood film starring Dev Anand and Kuldip Kaur in lead roles.
Music
References
External Links
Stage (David Bowie album)
Stage is David Bowie's second live album, recorded on the Isolar II world tour, and released by RCA Records in 1978. First UK pressings were on translucent yellow vinyl and some European pressings were also available on blue vinyl. Though it was rumoured at the time that this would be his final outing with the label, following dissatisfaction over the promotion of Low and "Heroes", Bowie would in fact remain with RCA until 1982.
The recording was culled from concerts in Philadelphia, Providence and Boston, USA, in late April and early May 1978. It primarily included material from Bowie's most recent studio albums to that date, Station to Station, Low and "Heroes" but, in a surprise show of nostalgia, also featured five songs from The Rise and Fall of Ziggy Stardust and the Spiders from Mars. Aside from Bowie's core team of Carlos Alomar, Dennis Davis and George Murray, band members included ex-Frank Zappa sideman Adrian Belew on guitar, Simon House from Hawkwind on electric violin, Roger Powell, best known for his work with Todd Rundgren in the group Utopia, on keyboards and Sean Mayes on piano, string ensemble and backup vocals. All would reunite the following year on Bowie's next studio LP, Lodger.
