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Canrightiopsis, a new Early Cretaceous fossil with Clavatipollenites-type pollen bridge the gap between extinct Canrightia and extant Chloranthaceae

2015-07Journal article Open access
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dc.contributor.authorFriis, Else Marie
dc.contributor.authorGrimm, Guido W.
dc.contributor.authorMÁRIO MIGUEL MENDES
dc.contributor.authorPedersen, Kaj Raunsgaard
dc.date.accessioned2018-12-07T14:53:18Z
dc.date.available2018-12-07T14:53:18Z
dc.date.issued2015-07
dc.description.abstractCanrightiopsis with three species (C. intermedia, C. crassitesta, C. dinisii) is described from the Early Cretaceous of Portugal based on small, one-seeded berries. The fruits are derived from bisexual flowers with three stamens borne on one side of the ovary. There are no traces of a perianth. Pollen is of the Clavatipollenites-type, monocolpate, semitectate, reticulate-columellate with heterobrochate reticulum and muri with beaded supratectal ornamentation. The ovary is unilocular with a single pendant, orthotropous and bitegmic ovule. The seed is endotestal. The endotesta consists of one layer of palisade-shaped crystal cells with fibrous infillings. The fruit wall has resin bodies or cavities from presumed ethereal oil cells sometimes seen as stomata-like structures on the fruit surface. A phylogenetic analysis resolves Canrightiopsis as a close relative of extant Chloranthaceae, particularly close to extant Chloranthus and Sarcandra. All three taxa share the one-sided position of the stamens on the ovary. An evolutionary sequence from fossil Canrightia to fossil Canrightiopsis and extant Chloranthus and Sarcandra is suggested by loss of perianth, reduction in number of ovules and stamens and displacement of stamens to one side of the ovary. Canrightiopsis also shares several critical features with extant Ascarina including monoaperturate pollen and beaded supratectal ornamentation of the pollen wall.
dc.description.sponsorshipSwiss Light Source (European Union) [20110963, 20130185]; Swedish Research Council [621-2011-5431]; CretaCarbo project [PTDC/CTE-GIX/113983/2009]
dc.description.versioninfo:eu-repo/semantics/publishedVersion
dc.identifier.doi10.1080/00173134.2015.1060750
dc.identifier.issn0017-3134
dc.identifier.issn1651-2049
dc.identifier.urihttp://hdl.handle.net/10400.1/11444
dc.language.isoeng
dc.peerreviewedyes
dc.publisherTaylor & Francis As
dc.relationThe record of coupled oceanic-atmospheric changes analysed by Carbon isotopes and palaeobotany in the Portuguese mid-Cretaceous: chemostratigraphy and palaeoecology (CretaCarbo)
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/
dc.subjectPhylogenetic networks
dc.subjectTomographic microscopy
dc.subjectAgglomerative method
dc.subjectGynoecium diversity
dc.subjectAngiosperm pollen
dc.subjectFlowering plants
dc.subjectSp. Nov.
dc.subjectPortugal
dc.subjectRadiation
dc.subjectSequences
dc.titleCanrightiopsis, a new Early Cretaceous fossil with Clavatipollenites-type pollen bridge the gap between extinct Canrightia and extant Chloranthaceae
dc.typejournal article
dspace.entity.typePublication
oaire.awardTitleThe record of coupled oceanic-atmospheric changes analysed by Carbon isotopes and palaeobotany in the Portuguese mid-Cretaceous: chemostratigraphy and palaeoecology (CretaCarbo)
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/5876-PPCDTI/PTDC%2FCTE-GIX%2F113983%2F2009/PT
oaire.citation.endPage212
oaire.citation.issue3
oaire.citation.startPage184
oaire.citation.titleGrana
oaire.citation.volume54
oaire.fundingStream5876-PPCDTI
person.familyNameMENDES
person.givenNameMÁRIO
person.identifier.ciencia-id271D-9765-FA24
person.identifier.orcid0000-0002-5470-5634
person.identifier.scopus-author-id7102005524
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.nameFundação para a Ciência e a Tecnologia
rcaap.rightsopenAccess
rcaap.typearticle
relation.isAuthorOfPublicationaef1c67d-c166-493e-9f10-0d4fceb8e7cb
relation.isAuthorOfPublication.latestForDiscoveryaef1c67d-c166-493e-9f10-0d4fceb8e7cb
relation.isProjectOfPublication3970d1a5-de7f-4b07-ae2e-828dade1f81b
relation.isProjectOfPublication.latestForDiscovery3970d1a5-de7f-4b07-ae2e-828dade1f81b

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