Ctenoimbricata

Ctenoimbricata; Temporal range: Wuliuan PreꞒ Ꞓ O S D C P T J K Pg N ↓
	Artist's restoration
Scientific classification
Kingdom:	Animalia
Superphylum:	Deuterostomia
Clade:	Ambulacraria
Phylum:	Echinodermata
Genus:	† Ctenoimbricata ; Zamora, Rahman, and Smith 2012
Type species
	Ctenoimbricata spinosa; Zamora, Rahman, and Smith 2012

Last updated August 13, 2025

Ctenoimbricata is an extinct genus of bilaterally symmetrical echinoderm, which lived during the early Middle Cambrian period of what is now Spain.^[1] It contains one species, Ctenoimbricata spinosa. It may be the most basal known echinoderm. It resembles the extinct ctenocystoids and cinctans, particularly the basal ctenocystoid Courtessolea. Ctenoimbricata is interpreted as a deposit-feeding pharyngeal basket feeder. It was relatively small, with a body 20 millimetres (0.79 in) long.

References

↑ Zamora, Samuel; Rahman, Imran A.; Smith, Andrew B. (2012-06-06). "Plated Cambrian bilaterians reveal the earliest stages of echinoderm evolution". PLoS ONE. 7 (6). Keith A. Crandall (ed.): –38296. doi: 10.1371/journal.pone.0038296 . ISSN 1932-6203. PMC 3368939 .

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[Zamora2012-1] Zamora, Samuel; Rahman, Imran A.; Smith, Andrew B. (2012-06-06). "Plated Cambrian bilaterians reveal the earliest stages of echinoderm evolution". PLoS ONE. 7 (6). Keith A. Crandall (ed.): –38296. doi: 10.1371/journal.pone.0038296 . ISSN 1932-6203. PMC 3368939 .

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