Siliceous microfossils from the Upper Cambrian of Queensland
Siliceous microfossils from the Upper Cambrian of Queensland
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DOI：
10.1080/03115518608619155
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发表时间：
1986
期刊：
影响因子：
1.3
通讯作者：
S. Bengtson
中科院分区：
文献类型：
--
作者：
S. Bengtson
昆士兰西部发现了一套保存异常完好的明代(晚寒武世早期)硅质微体化石组合。其主要成分是六角形的针状体。在被鉴定为六角形目海绵的新种中，有一新种Kony rium Nazarov&Popov 1976，以前仅被认为是奥陶纪的神秘化石，以及Silicunculus新属，其特征是钩状针刺。直径约2 5 0μm的球状球体被解释为六角类繁殖体的骨架，并被称为Echidnina新属。直径280-520μm的穿孔球状试验被称为Blastulospongia Pickett&Jell1983属，推测为括约动物海绵。芽囊脊椎病也可以被解释为放射虫，类似于海绵虫胶球虫。还讨论了Echidnina的放射虫亲缘关系的可能性，但认为可能性较小。相关的针状物，没有提到命名的分类群，也被描述和描绘。这些包括..。
An unusually well preserved assemblage of siliceous microfossils of Mindyallan (early Late Cambrian) age is described from western Queensland. It is dominated by hexactinellid spicules. Among the forms identified as hexactinellid sponges are a new species of Konyrium Nazarov & Popov 1976, previously known only as enigmatic fossils from the Ordovician, and the new genus Silicunculus, characterized by hook-shaped spicules. Spiculated globules about 250 μm in diameter are interpreted as the skeletons of hexactinellid propagules and referred to the new genus Echidnina. Perforated globular tests 280–520 μm in diameter are referred to the genus Blastulospongia Pickett & Jell 1983,a presumed sphinctozoan sponge. Blastulospongia may alternatively be interpreted as a radiolarian similar to the spumellarian collosphaerids. The possibility of radiolarian affinities of Echidnina also is discussed, but considered less likely. Associated spicules, not referred to named taxa, are also described and figured. These includ...