Heloplacidae

Heloplacidae; Temporal range: Silurian PreꞒ Ꞓ O S D C P T J K Pg N
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Mollusca
Class:	incertae sedis
Family:	†Heloplacidae; Cherns, 2004
Genera
	See text

The Heloplacidae are a group of plated aplacophora known from Silurian deposits. Their best understood representative, Acaenoplax, can be taken as representative of the family; it is the only genus for which soft part anatomy is known.^[1]^[2]

References

^ Cherns, L. (2004). "Early Palaeozoic diversification of chitons (Polyplacophora, Mollusca) based on new data from the Silurian of Gotland, Sweden". Lethaia. 37 (4): 445–456. doi:10.1080/00241160410002180.
^ Sutton, M. D.; Briggs, D. E. G.; Siveter, D. J.; Siveter, D. J. (2004). "Computer reconstruction and analysis of the vermiform mollusc Acaenoplax hayae from the Herefordshire Lagerstatte (Silurian, England), and implications for molluscan phylogeny". Palaeontology. 47 (2): 293–318. doi:10.1111/j.0031-0239.2004.00374.x.

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[Cherns2004-1] Cherns, L. (2004). "Early Palaeozoic diversification of chitons (Polyplacophora, Mollusca) based on new data from the Silurian of Gotland, Sweden". Lethaia. 37 (4): 445–456. doi:10.1080/00241160410002180.

[ref_-2] Sutton, M. D.; Briggs, D. E. G.; Siveter, D. J.; Siveter, D. J. (2004). "Computer reconstruction and analysis of the vermiform mollusc Acaenoplax hayae from the Herefordshire Lagerstatte (Silurian, England), and implications for molluscan phylogeny". Palaeontology. 47 (2): 293–318. doi:10.1111/j.0031-0239.2004.00374.x.

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