Cladogram of phylum Echinodermata, down to class level.[1][2]
_from_the_Bellevue_Formation_(Upper_Ordovician)_at_the_Maysville_West_roadcut_of_northern_Kentucky,_USA.jpg){kind=small}
References
- ^ Samuel Zamora; Imran A Rahman; Andrew B Smith (2012). "Plated Cambrian bilaterians reveal the earliest stages of echinoderm evolution". PLOS One. 7 (6): e38296. Bibcode:2012PLoSO...738296Z. doi:10.1371/JOURNAL.PONE.0038296. ISSN 1932-6203. PMC 3368939. PMID 22701623. Wikidata Q21090899.
{{cite journal}}: CS1 maint: unflagged free DOI (link) - ^ Timothy P. Topper; Junfeng Guo; Sébastien Clausen; Christian B Skovsted; Zhifei Zhang (25 March 2019). "A stem group echinoderm from the basal Cambrian of China and the origins of Ambulacraria". Nature Communications. 10 (1): 1366. Bibcode:2019NatCo..10.1366T. doi:10.1038/S41467-019-09059-3. ISSN 2041-1723. PMC 6433856. PMID 30911013. Wikidata Q63071833.