Chancelloria

Chancelloria
Chancelloria eros , Natural History Museum Vienna
Temporal occurrence
Lower Cambrian to Early Upper Cambrian
540 to 500 million years
Locations
Canada, United States, England, France
Systematics
Empire : Animals (Animalia) Trunk : incertae sedis Class : Coeloscleritophora Order : Chancelloriida Family : Chancelloriidae Genre : Chancelloria
Scientific name
Chancelloria
Charles Doolittle Walcott , 1920

Chancelloria is ataxon belongingtothe Chancelloriidae family thatlivedduring the Central Cambrian .

Initial description

Chancelloria was first scientifically described by Charles Doolittle Walcott in 1920 .

Occurrence

In addition to the type locality in the Central Cambrian Burgess Shale in British Columbia , Canada, Chancelloria can also be found in Comley Limestone in Shropshire in England, in the Marcory Formation in southern France, in the Wheeler Shale in Utah and in the Bright Angel Shale of the Grand Canyon in Arizona . From the Greater Phyllopod Bed in the Burgess Shale alone , 178 Chancelloria finds are known, which make up 0.34% of the total fauna.

Taxonomic position

Walcott originally interpreted Chancelloria as a primitive sponge . In the meantime, this assignment has been abandoned and Chancelloria has been classified as incertae sedis within the newly created enigmatic group of animals, the Coeloscleritophora .

Taxa

The genus Chancelloria includes the following taxa:

• Chancelloria eros Walcott, 1920 (type fossil)
• Chancelloria pentacta Rigby, 1978
• Chancelloria drusilla Walcott, 1920
• Chancelloria libo Walcott, 1920
• Chancelloria yorkensis Walcott, 1920
• Chancelloria maroccana Szduy, 1969
• Chancelloria lenaica Zhuravleva and Korde, 1955
• Chancelloria symmetrica Vassiljeva, 1985
• Chancelloria altaica Romanenko, 1968
• Chancelloria racemifundis Bengtson, 1990

literature

• Sdzuy, K .: Lower and Middle Cambrian Porifera. (Chancellorida and Hexactinellida) . In: Paleontological Journal . tape 43 (3-4) , 1969, pp. 115-147 , doi : 10.1007 / bf02987647 .

Individual evidence

1. ^ Reid, REH: Occurrence of Chancelloria Walcott in the Comley Limestone . In: Geological Magazine . tape 96 (3) , 2009, pp. 261 , doi : 10.1017 / S0016756800060271 .
2. ↑ Keith Rigby, J .: Porifera of the Middle Cambrian Wheeler Shale, from the Wheeler Amphitheater, House Range, in Western Utah . In: Journal of Paleontology . tape 52 (6) , 1978, pp. 1325-1345 , doi : 10.2307 / 1303938 .
3. ^ Elliott, DK and Martin, DL: Chancelloria, an enigmatic fossil from the Bright Angel Shale (Cambrian) of Grand Canyon, Arizona . In: Journal of the Arizona-Nevada Academy of Science . tape 21 (2) , 1987, pp. 67-72 .
4. ^ Caron, Jean-Bernard and Jackson, Donald A .: Taphonomy of the Greater Phyllopod Bed community, Burgess Shale . In: PALAIOS . tape 21 (5) , 2006, pp. 451-65 , doi : 10.2110 / palo.2003.P05-070R .
5. ^ Walcott, CD: Cambrian geology and paleontology IV: 6 — Middle Cambrian Spongiae . In: Smithsonian Miscellaneous Collections . tape 67 , 1920, pp. 261-364 .
6. ↑ Bengtson, S. and Hou, X .: The integument of Cambrian chancelloriids . In: Acta Palaeontologica Polonica . tape 46 (1) , 2001, p. 1-22 .

Web links

Commons : Chancelloria  - collection of images, videos and audio files