{"refrec":{"BRefID":396499,"RR":"<b>Bidgood, M.; Schlagintweit, F.; Simmons, M.</b> (2024). The genus <i>Orbitolina</i> d’Orbigny, 1850 (larger benthic Foraminifera) and its constituent species: notes on identity and stratigraphic ranges. <i>Acta Palaeontologica Romaniae 20(2)</i>: 33-59. <a href=\"https://dx.doi.org/10.35463/j.apr.2024.02.05\" target=\"_blank\">https://dx.doi.org/10.35463/j.apr.2024.02.05</a>","BEntID":394287,"PublicFlag":1,"CheckedFlag":0,"wosflag":0,"vabbflag":0,"RefStringPartII":". <i>Acta Palaeontologica Romaniae 20(2)</i>: 33-59. <a href=\"https://dx.doi.org/10.35463/j.apr.2024.02.05\" target=\"_blank\">https://dx.doi.org/10.35463/j.apr.2024.02.05</a>","DocTypID":8,"DocType":"Journal article","MarineFlag":1,"FreshFlag":0,"BrackishFlag":0,"TerrestrialFlag":0,"Authorstring":"Bidgood, M.; Schlagintweit, F.; Simmons, M.","OrigTitleTranslFlag":0,"Authorstringtrunc":"Bidgood, M.; Schlagintweit, F.; Simmons, M.","Englishabstract":"Following a literature review of the species of<i> Orbitolina</i> and its allies, the identity criteria and stratigraphic ranges of the six potential constituent species of the commonly encountered mid-Cretaceous foraminiferal genus <i>Orbitolina</i> d’Orbigny, 1850 <i>(sensu stricto</i>) are reviewed based on published material. It is noted that correct taxonomic assignment of <i>Orbitolina</i> species requires observation and measurement of both the embryonic apparatus in centred axial thin-sections and of the chamber passage shape in tangential sections. As a consequence, many illustrations purportedly of <i>Orbitolina sensu stricto</i> in the published literature cannot confidently be identified to species level, and such specimens (including new material) should be described or re-described as <i>Orbitolina </i>spp. The genus <i>Orbitolina</i> has a range of late Albian – middle Cenomanian. Species of <i>Orbitolina</i>, when identifiable, have shorter ranges. <i>Orbitolina concava</i> (Lamarck 1816) is restricted to the early – middle Cenomanian, and its inception thus forms a potential proxy for the base of the Cenomanian in carbonate platform settings, but care needs to be taken in its identification and separation from other species of <i>Orbitolina </i>that have at least partial late Albian ranges.","AbstractOtherLang":null,"BibLvlCode":"AS","StandardTitle":"The genus <i>Orbitolina</i> d’Orbigny, 1850 (larger benthic Foraminifera) and its constituent species: notes on identity and stratigraphic ranges","OrigTitleLangCode":"en","OrigTitleLangCodeExtended":"eng","OrigTitleLangID":15,"DateLastModified":{"date":"2025-01-09 01:32:35.510097","timezone_type":1,"timezone":"+01:00"},"UserAccessRight":null,"UserAccID":null,"AuthorKeywords":"Orbitolinids, Orbitolina, taxonomy, biostratigraphy, Cretaceous, foraminifera","OtherDescriptors":null,"Notes":null,"AnaPub":2024,"MonPub":null,"DateUpdate":"2025-01-02","DateCreate":"2024-11-06","SecASFANote":null,"ConfID":null,"PeerRev":1,"VlizCoreFlag":1,"WoScode":null,"VABBcode":null,"OpenAcc":0,"DOI":"10.35463/j.apr.2024.02.05"},"refs":null,"anarec":{"AnaID":396499,"PubliDate":2024,"Pagination":"33-59","XtraPublOfAnaID":null,"ISBN":null,"Volume":"20","Issue":"2","BRefMon":null,"BRefMonRR":null,"BRefXtra":null,"BRefXtraRR":null,"SerBRefID":262545,"SerRR":"Acta Palaeontologica Romaniae: Cluj.  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