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DO BRACHIOPODS SHOW SUBSTRATE-RELATEDPHENOTYPIC VARIATION? A CASE STUDY FROMTHE BURGESS SHALE
Swedish Museum of Natural History, Department of Paleobiology.ORCID iD: 0000-0001-7366-7680
2017 (English)In: Palaeontology, ISSN 0031-0239, E-ISSN 1475-4983, Vol. 60, no 2, 269-279 p.Article in journal (Refereed) Published
Abstract [en]

As sessile, benthic filter feeders, brachiopodsshare an intimate relationship with their chosen substrate.Individuals of Micromitra burgessensis in the Burgess ShaleFormation are preserved in life position, attached to a rangeof hard substrates, including skeletal debris, conspecific brachiopods,sponges and enigmatic tubes. Here we investigatethe phenotypic variability of M. burgessensis associated withdiffering substrate attachments. We apply geometric morphometricsto test for variation by plotting landmarks onthe exterior of ventral and dorsal valves of M. burgessensisspecimens that are preserved attached to different substrates.Using principal component, canonical variate analyses andANOVA, we determine that there is some variation in shaperelated to substrate. Canonical variate analyses, for ventralvalves and dorsal valves, indicate that specimens attached tothe same substrate are recognizable in shape from specimensattached to other substrate types. The strength of differentiationhowever, is not robust and combined with our discriminateanalysis of separate populations suggests that there isthe potential for substrates to exercise only weak controlover the morphology of Brachiopoda.

Place, publisher, year, edition, pages
2017. Vol. 60, no 2, 269-279 p.
Keyword [en]
substrate, brachiopod, phenotypic variation, geometric morphometrics, Burgess Shale, morphology
National Category
Geology
Research subject
Diversity of life
Identifiers
URN: urn:nbn:se:nrm:diva-2466DOI: 10.1111/pala.12281OAI: oai:DiVA.org:nrm-2466DiVA: diva2:1147106
Projects
Ett grunt ursprung
Funder
Swedish Research Council, VR2016-04610
Available from: 2017-10-04 Created: 2017-10-04 Last updated: 2017-10-04

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