Guangweicaris
spinatus
Phylum
Arthropoda, Class and Order Incertae sedis, Family Guangweicarididae
Geologic
Time: Early Cambrian (~525 million years ago)
Size: 40
mm
Fossil
Site: Guanshan Fauna, Lower most part of Wulongqing Formation, Gangtoucun
Village, Kunming City, Yunnan Province, China - Near and similar to the
Chengjiang Biota
This
unusual arthropod is known as Guangweicaris spinatus. The genus
was described early this year from some 100 specimens discovered
in April 2006, and comes from what has been termed the “Guanshan
Fauna”,
found in the Wulongqing Formation. The Guanshan Fauna shares many
genera with the slightly older Chengjiang Biota, but differs at
the species level. With the discovery of the Chengjiang
Biota in 1984 a window on the Cambiain Explosion in China was
opened.
The
fauna has only been studied for since 2001, so many more unusual
taxa are probably yet to be discovered. The species name spinatus
derives from the spines present on the tergites and abdomen. Its
precise placement as to Class and Order remain uncertain until more
specimens with soft parts and appendages preserved can be found.
|
|