{"refrec":{"BRefID":410362,"RR":"<b>Queiroz, H.G.D.; Kerber, G.; Becker-Kerber, B.; Assine, M.L.; Simões, M.G.</b> (2025). Systematics and palaeogeographical implications of Early Devonian bivalves from the Ponta Grossa Formation, northwest border of the Paraná Basin, Brazil. <i>Historical Biology Online first</i>: 1-34. <a href=\"https://dx.doi.org/10.1080/08912963.2025.2501782\" target=\"_blank\">https://dx.doi.org/10.1080/08912963.2025.2501782</a>","BEntID":408171,"PublicFlag":1,"CheckedFlag":0,"wosflag":1,"vabbflag":0,"RefStringPartII":". <i>Historical Biology Online first</i>: 1-34. <a href=\"https://dx.doi.org/10.1080/08912963.2025.2501782\" target=\"_blank\">https://dx.doi.org/10.1080/08912963.2025.2501782</a>","DocTypID":8,"DocType":"Journal article","MarineFlag":0,"FreshFlag":0,"BrackishFlag":0,"TerrestrialFlag":0,"Authorstring":"Queiroz, H.G.D.; Kerber, G.; Becker-Kerber, B.; Assine, M.L.; Simões, M.G.","OrigTitleTranslFlag":0,"Authorstringtrunc":"Queiroz, H.G.D. <i>et al.</i>","Englishabstract":"We report a remarkable Early Devonian, fully marine, bivalve-dominated assemblage from the Ponta Grossa Formation, Jaguariaíva Member, in the Alto Garças Sub-basin, northwestern Paraná Basin, Brazil. This discovery enhances our understanding of benthic invertebrate distribution within the basin. The assemblage includes cosmopolitan species (<i>Nuculites africanus</i>, <i>Nuculites sharpei</i>, <i>Nuculites</i> sp. <i>Palaeoneilo magnifica</i>, <i>Nuculana viator</i>, <i>‘Acharax’ bainii</i>, and <i>Pholadella epops</i>), a new bivalve (<i>Devonomya gondwanica</i> gen. et sp. nov.), and indeterminate species (<i>Anomalodesmata</i> indet.). Excellent preservation reveals internal features (e.g. hinge, muscle scars), documented here for the first time in some species (e.g. <i>Pholadella epops</i>). The bivalves, mostly preserved in concretions, exhibit closed articulated shells without abrasion and fragmentation, some possibly preserved <i>in situ</i>, suggesting an autochthonous to parautochthonous origin. Shallow infaunal deposit-feeders dominate, followed by infaunal suspension-feeders. They thrived in low-energy, offshore-prodeltaic settings with fine-grained, organic-rich siliciclastic sediments under oxygen-deficient conditions. The identified species occur across Gondwana, some shared with South Africa, the Falkland Islands/Malvinas, and Antarctica. They are also found in coeval Pragian-Emsian strata of the same unit in southern Brazil, confirming a connection between the Alto Garças and Apucarana sub-basins during the Early Devonian marine transgression.<a href=\"urn:lsid:zoobank.org:act:0283CAEE-CD1A-4FDD-8F2A-2DB4A1EE1D86\">urn:lsid:zoobank.org:act:0283CAEE-CD1A-4FDD-8F2A-2DB4A1EE1D86</a><a href=\"urn:lsid:zoobank.org:act:9F8B57AD-5FC0-4DB0-A3A8-A7F6A5FD01BD\">urn:lsid:zoobank.org:act:9F8B57AD-5FC0-4DB0-A3A8-A7F6A5FD01BD</a>","AbstractOtherLang":null,"BibLvlCode":"AS","StandardTitle":"Systematics and palaeogeographical implications of Early Devonian bivalves from the Ponta Grossa Formation, northwest border of the Paraná Basin, Brazil","OrigTitleLangCode":"en","OrigTitleLangCodeExtended":"eng","OrigTitleLangID":15,"DateLastModified":{"date":"2025-08-08 01:33:19.193757","timezone_type":1,"timezone":"+02:00"},"UserAccessRight":null,"UserAccID":null,"AuthorKeywords":null,"OtherDescriptors":null,"Notes":null,"AnaPub":2025,"MonPub":null,"DateUpdate":"2025-08-01","DateCreate":"2025-08-01","SecASFANote":null,"ConfID":null,"PeerRev":1,"VlizCoreFlag":1,"WoScode":null,"VABBcode":null,"OpenAcc":0,"DOI":"10.1080/08912963.2025.2501782"},"refs":null,"anarec":{"AnaID":410362,"PubliDate":2025,"Pagination":"1-34","XtraPublOfAnaID":null,"ISBN":null,"Volume":"Online first","Issue":null,"BRefMon":null,"BRefMonRR":null,"BRefXtra":null,"BRefXtraRR":null,"SerBRefID":269135,"SerRR":"Historical Biology. TAYLOR & FRANCIS LTD: Abingdon.  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