Chancelloria

Chancelloria Temporal range: Early Cambrian–lower Upper Cambrian PreЄ Є O S D C P T J K Pg N
Detail of a fossil of Chancelloria eros, on display at the Naturhistorisches Museum, Vienna.
Scientific classification
Kingdom:	Animalia
Phylum:	incertae sedis
Class:	†Coeloscleritophora
Order:	Chancelloriida
Family:	Chancelloriidae
Genus:	Chancelloria Walcott, 1920
Species
C. eros Walcott, 1920 (type) C. pentacta Rigby, 1978 C. drusilla Walcott, 1920 C. libo Walcott, 1920 C. yorkensis Walcott, 1920 C. maroccana Szduy, 1969 C. lenaica Zhuravleva and Korde, 1955 C. symmetrica Vassiljeva, 1985 C. altaica Romanenko, 1968 C. racemifundis Bengtson, 1990

Chancelloria is a genus of early animals known from the Middle Cambrian Burgess Shale, the Comley limestone, the Wheeler Shale, the Bright Angel Shale and elsewhere. It was first described in 1920 by Charles Doolittle Walcott, who regarded them as one of the most primitive groups of sponges. This appears unlikely, and it is currently placed in the enigmatic group Coeloscleritophora. 178 specimens of Chancelloria are known from the Greater Phyllopod bed, where they comprise 0.34% of the community.