10.6084/m9.figshare.3453485.v1
Samuel Zamora
Samuel
Zamora
Bertrand Lefebvre
Bertrand
Lefebvre
J. Javier Álvaro
J.
Javier Álvaro
Sébastien Clausen
Sébastien
Clausen
Olaf Elicki
Olaf
Elicki
Oldrich Fatka
Oldrich
Fatka
Peter Jell
Peter
Jell
Artem Kouchinsky
Artem
Kouchinsky
Jih-Pai Lin
Jih-Pai
Lin
Elise Nardin
Elise
Nardin
Ronald Parsley
Ronald
Parsley
Sergei Rozhnov
Sergei
Rozhnov
James Sprinkle
James
Sprinkle
Colin D. Sumrall
Colin
D. Sumrall
Daniel Vizcaïno
Daniel
Vizcaïno
Andrew B. Smith
Andrew B.
Smith
Chapter 13 Cambrian echinoderm diversity and palaeobiogeography
Geological Society of London
2016
species
taxonomically
Cambrian echinoderm taxa
firm palaeobiogeographical statements
Chapter 13 Cambrian echinoderm diversity
Laurentia
specimen
Stage 5 levels
formation
West Gondwana
ossicle
Geology
2016-06-21 11:27:39
Dataset
https://geolsoc.figshare.com/articles/dataset/Chapter_13_Cambrian_echinoderm_diversity_and_palaeobiogeography/3453485
<p>The distribution of all known Cambrian echinoderm taxa, encompassing both articulated specimens and taxonomically diagnostic
isolated ossicles, is documented for the first time. The database described by 2011 comprises 188 species recorded from 65
formations from around the world. Formations that have yielded articulated echinoderms are unequally distributed in space
and time. Only Laurentia and West Gondwana provide reasonably complete records at the resolution of Stage. The review of the
biogeographical distributions of the eight major echinoderm clades shows that faunas from Laurentia and Northeast Gondwana
(China and Korea) are distinct from those of West Gondwana and Southeast Gondwana (Australia); other regions are too poorly
sampled to make firm palaeobiogeographical statements. Analysis of alpha diversity (species per formation) shows that diversity
rose initially to Cambrian Stage 5, declined into Guzhangian and Paibian before returning to Stage 5 levels by the end of
the Cambrian. This pattern is replicated in Laurentia and West Gondwana. We show that taxonomically diagnostic ossicles found
in isolation typically occur significantly earlier than the first articulated specimens of the same taxa and provide important
information on the first occurrence and palaeobiogeographical distribution of key taxa, and of the phylum as a whole.
</p>