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Helicoplacoidea
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Helicoplacoidea
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Journal Article
Taphonomy and Environmental Distribution of Helicoplacoid Echinoderms Available to Purchase
Journal: PALAIOS
Publisher: SEPM Society for Sedimentary Geology
Published: 01 June 2001
PALAIOS (2001) 16 (3): 197–204.
FIGURES
Journal Article
Evolutionary paleoecology of the earliest echinoderms: Helicoplacoids and the Cambrian substrate revolution Available to Purchase
Journal: Geology
Publisher: Geological Society of America
Published: 01 September 2000
Geology (2000) 28 (9): 839–842.
FIGURES
Journal Article
Observations on the Early Cambrian helicoplacoid echinoderms Free
Journal: Journal of Paleontology
Publisher: Paleontological Society
Published: 01 July 1993
Journal of Paleontology (1993) 67 (4): 590–604.
Journal Article
Notes on the Helicoplacoidea and early echinoderms Free
Journal: Journal of Paleontology
Publisher: Paleontological Society
Published: 01 January 1967
Journal of Paleontology (1967) 41 (1): 97–102.
