德国南部法兰克尼亚早侏罗世腹足类动物

IF 1.8 2区 地球科学 Q2 PALEONTOLOGY Palaeontographica Abteilung A-Palaozoologie-Stratigraphie Pub Date : 2015-12-10 DOI:10.1127/PALA/305/2015/1
A. Nützel, Joachim Gründel
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引用次数: 23

摘要

报道了早侏罗世(晚Pliensbachian) Franconia(北巴伐利亚,德国南部)Amaltheenton组的40种腹足类动物。另外11种采用开放命名法。大部分材料来自布滕海姆和卡尔克罗伊特的粘土坑。腹足类产于灰色页岩中,代表了以前的海洋软底环境。腹足类动物是Franconia Amaltheenton组底栖生物群落中最多样化的,在当地甚至是最丰富的分类群。双壳类、舟足类、蛇足类、海百合类和腕足类也很丰富。在双壳类中,类牡蛎的plicatula spinosa和nuculoidea尤其丰富。腹足类和大多数其他底栖动物都很小(小于15毫米),甚至很小。只有三种腹足类动物的尺寸大于50毫米:胸膜瘤、波状假katosira和布顿海姆。然而,这些大型物种非常罕见。最丰富的腹足类是海腹足类Levipleura blainvillei、Kalchreuthia frankei和franccerithium kochi以及异枝的Domerionina domeria。在腹足亚纲或目中,异支目,特别是建筑支目(原拟鳃目)的物种多样性最高。新发现的有11种:trimmeuselensis、Costasphaera franconica、cryptataplae johanni、紫紫癜、Tripartella neubaueri、Buttenheimia dietzi、Tricarilda schoberti、Tricarilda recta、jurassica、Schobertinella heterogyrata和Sulcoactaeon sendelbachensis。三个属被描述为新属:Costasphaera, Buttenheimia和Schobertinella。本文通过对Katosira periniana(早侏罗世,法国)和Katosira fragilis(晚三叠世,南阿尔卑斯)这两个有争议的Katosira模式种的全模式研究,讨论了Pseudokatosira属和Katosira属的真实性和同一性。我们的结论是,可以正确地认为滨螺是模式种。这两种全模都在这里进行了说明和重新描述。
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Early Jurassic (Pliensbachian)gastropods from Franconia, Southern Germany
40 nominate gastropod species are described from the Early Jurassic (Late Pliensbachian) Amaltheenton Formation of Franconia (Northern Bavaria, SouthernGermany). In addition 11 species are treated in open nomenclature.Most of thematerial comes from the clay pits at Buttenheim and Kalchreuth. The gastropods occur in grey shales representing former marine soft bottom environments. Gastropods are the most diverse and locally even the most abundant taxonomic group comprising the benthic communities of the Amaltheenton Formation in Franconia. Bivalves, scaphopods, ophiuroids, crinoids and brachiopods are also abundant. Among bivalves, the oyster-likePlicatula spinosa andNuculoidea are especially abundant.The gastropods andmost of the other benthic species are small (< 15 mm) or even minute. Only three gastropod species attain a size >50 mm: Pleurotomaria amalthei, Pseudokatosira undulata and Buttenheimia dietzi. However, these large species are rare. The most abundant gastropods are the caenogastropods Levipleura blainvillei, Kalchreuthia frankei and Francocerithium kochi and the heterobranch Domerionina domeria.Heterobranchia, especially architectibranchs (formerly Opisthobranchia) have the highest species diversity among gastropod subclasses or orders. Eleven species are described as new: Striatoconulus? trimeuselensis, Costasphaera franconica, Cryptaulax johanni, Purpurina liassica, Tripartella neubaueri, Buttenheimia dietzi, Tricarilda schoberti, Tricarilda recta, Camponaxis jurassica, Schobertinella heterogyrata and Sulcoactaeon sendelbachensis. Three genera are described as new: Costasphaera, Buttenheimia and Schobertinella. The validity and identity of the genera Pseudokatosira andKatosira is discussed based on the study of the holotypes of both of the disputed type species ofKatosira:Katosira periniana (Early Jurassic, France) orKatosira fragilis (Late Triassic, SouthernAlps).We conclude that K. periniana is correctly considered to be the type species. Both holotypes are illustrated and re-described here.
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来源期刊
CiteScore
3.80
自引率
3.70%
发文量
21
审稿时长
>12 weeks
期刊介绍: Palaeontographica Section A publishes peer reviewed results of studies on palaeozoology, paleoecology and biostratigraphy. Its large paper format provides sufficient space for large tables, illustrations, photographs and Palaeontographica’s renowned plates. Published contributions span all areas of palaeozoology, i.e., systematic, phylogenetic and ecological aspects. Careful peer review ensures the high quality of the papers, covering localities all over the world. Many landmark papers in palaeozoology and biostratigraphy were published in Section A of Palaeontographica. This includes numerous lavishly illustrated monographs of certain groups of fossils and stratigraphic ranges. These monographs, are typical for Paleontographica papers, characterised by numerous highest quality plates and are printed on special high quality paper for excellent reproduction of picture plates.
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