Bryozoan fauna of the Boggy Formation (Deese Group, Pennsylvanian) of the Buckhorn Asphalt Quarry, Oklahoma, USA

Bryozoan fauna of the Boggy Formation (Deese Group, Pennsylvanian) of the Buckhorn Asphalt Quarry, Oklahoma, USA
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美国俄克拉荷马州巴克霍恩沥青采石场沼泽地层(宾夕法尼亚州迪斯群)的苔藓虫动物群

DOI:
10.1007/s12549-016-0231-6
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发表时间:
2016
影响因子:
1.4
通讯作者:
Nützel A
Nützel A
中科院分区:
地球科学3区
文献类型:
--
作者:
Ernst A;Seuss B;Taylor PD;Nützel A

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位于美国俄克拉荷马州的宾夕法尼亚中、上阶巴克霍恩沥青采石场(Boggy Formation,Deese Group)以其保存完好的海洋无脊椎动物群而闻名,其中包括原始骨骼文石的保存。在这里,我们首次描述的分类的鹿角苔藓虫,认识到9个物种,其中两个是新的:Stenophragmidium buckhornensissp。nov.和Streblotrypa(Streblotrypa)heltzelaesp. nov.又有两个种,狭孔菌属(Stenoporellasp.)和Spinofenestellasp.,在开放命名法中描述。其他物种与美国和俄罗斯的宾夕法尼亚州有关。ShishoviclemaandShulgapora2属首次在北美发现。上级保存的鹿角苔藓虫允许一些新的和鲜为人知的骨骼特征进行描述。这些包括纳米穿孔,颗粒带,壁棘,棘状半隔膜和横向纤维壁织物。在几个鹿角苔藓虫物种的骨骼壁中发现的纳米穿孔是微小的孔,周围的薄层被偏转,表明它们不是死后结构。然而,目前还不清楚它们是苔藓虫的特征还是由于微共生体的存在而导致的。孔孔
The Middle to Upper Pennsylvanian Buckhorn Asphalt Quarry (Boggy Formation, Deese Group) of Oklahoma, USA, is well known for its exceptionally preserved fauna of marine invertebrates, including conservation of original skeletal aragonite. Here, we describe for the first time the taxonomy of the Buckhorn bryozoans, recognising nine species, two of which are new:Stenophragmidium buckhornensissp. nov. andStreblotrypa(Streblotrypa)heltzelaesp. nov. Two further species,Stenoporellasp. andSpinofenestellasp., are described in open nomenclature. The other species show relationships to the Pennsylvanian of the USA and Russia. The generaShishoviclemaandShulgaporaare identified for the first time in North America. Superior preservation of the Buckhorn bryozoans allows some new and poorly known skeletal characters to be described. These include nanoperforations, granule bands, mural spines, spinose hemiphragms and transverse fibrous wall fabric. Nanoperforations, found in the skeletal walls of several Buckhorn bryozoan species, are tiny holes around which laminae are deflected, indicating that they are not post-mortem structures. However, it is unclear whether they are features of the bryozoans or have resulted from the presence of microsymbionts. The primary wall layer of the fenestrateSeptopora blandaMoore, 1929 is apparently composed of transverse fibrous crystallites, a skeletal fabric previously known only in post-Palaeozoic cyclostomes.
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