TY - JOUR
T1 - Chancelloriid sclerites from the lowermost Cambrian of North China and discussion of sclerite taxonomy
AU - Yun, Hao
AU - Zhang, Xingliang
AU - Li, Luoyang
AU - Pan, Bing
AU - Li, Guoxiang
AU - Brock, Glenn A.
PY - 2019/4
Y1 - 2019/4
N2 - Chancelloriid sclerites from the lowermost Cambrian Xinji Formation (Series 2, Stage 3), southern margin of the North China platform, are systematically described. Thousands of isolated sclerites from three sections are assigned to three genera and four species, including Chancelloria cf. eros, Allonnia tripodophora, Archiasterella pentactina, and Ar. tetraspina. To accurately document the taxonomic significance of the sclerite structure, modified formulas (m+nC, m+nA, and m+0) are put forward to represent the full series and variation of sclerite forms. Based on the sclerite construction, statistical analysis on the proportions of different sclerite forms in the rock samples and the composition of sclerites in previously described chancelloriid scleritomes, a new scheme for identification and classification of isolated sclerites reconciled within the framework of the complete scleritome, is proposed.
AB - Chancelloriid sclerites from the lowermost Cambrian Xinji Formation (Series 2, Stage 3), southern margin of the North China platform, are systematically described. Thousands of isolated sclerites from three sections are assigned to three genera and four species, including Chancelloria cf. eros, Allonnia tripodophora, Archiasterella pentactina, and Ar. tetraspina. To accurately document the taxonomic significance of the sclerite structure, modified formulas (m+nC, m+nA, and m+0) are put forward to represent the full series and variation of sclerite forms. Based on the sclerite construction, statistical analysis on the proportions of different sclerite forms in the rock samples and the composition of sclerites in previously described chancelloriid scleritomes, a new scheme for identification and classification of isolated sclerites reconciled within the framework of the complete scleritome, is proposed.
KW - Chancelloriids
KW - taxonomy
KW - Xinji Formation
KW - Cambrian Series 2
KW - North China
KW - Taxonomy
UR - http://www.scopus.com/inward/record.url?scp=85063524378&partnerID=8YFLogxK
U2 - 10.1016/j.geobios.2019.02.001
DO - 10.1016/j.geobios.2019.02.001
M3 - Article
AN - SCOPUS:85063524378
SN - 0016-6995
VL - 53
SP - 65
EP - 75
JO - Geobios
JF - Geobios
ER -