Geodiversitas | |
Large dasycladalean algae from Upper Jurassic limestone deposits of the Apuseni Mountains (Romania) — habitat and depositional environment | |
Emanoil Săsăran1  Ioan I. Bucur1  | |
关键词: Calcareous algae; Dasycladales; Paleoenvironment; Upper Jurassic; Apuseni Mountains; Romania; Algues calcaires; Dasycladales; paléoenvironnement; Jurassique supérieur; monts Apuseni; Roumanie; | |
DOI : 10.5252/g2012n1a12 | |
学科分类:生物科学(综合) | |
来源: Museum National d Histoire Naturelle | |
【 摘 要 】
Threespeciesofdasycladaleanalgaearedescribed:PetrasculapiaiBachmayer,1944,P.bursiformis(Etallon,1859)andSteinmanniporellakapelensis(Sokačamp;Nikler,1973).Twoofthem,PetrasculapiaiandSteinmanniporellakapelensis,arerelativelyseldomreportedandconsequentlypoorlyknownalgae.TheywerefoundattwolocationsintheApuseniMountains:Sănduleştiquarry(TrascăuMountains)andŞerbotaHill(nearAştileu,PădureaCraiuluiMountains).ThetwospeciesofPetrasculawereessentiallyidentifiedfromsectionsofthestalk.Theirstudyprovides,especiallyforP.piai,usefulsupplementarydatarelatedtothemorphologyofthelateralsandthestructureofthestalk.RegardingSteinmanniporellakapelensis,Sănduleştiisonlythesecondlocality(afterthetypelocality)wherethisalgaisknowntooccurasnumerouswellpreservedspecimens.Microfaciesandsedimentologicaldatasuggestthatthesealgaewererestrictedtomicro-environmentswithintheexternalpartofthecarbonateplatforms.
【 授权许可】
Unknown
【 预 览 】
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