Phosphatized soft tissues in bivalves from the Portland Roach of Dorset (Upper Jurassic)
Phosphatized soft tissues in bivalves from the Portland Roach of Dorset (Upper Jurassic)
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DOI：
10.1017/s001675680001147x
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发表时间：
1995-01
影响因子：
2.3
通讯作者：
P. Wilby;M. Whyte
中科院分区：
文献类型：
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作者：
P. Wilby;M. Whyte
摘要多塞特郡上侏罗纪波特兰蟑螂的三角形类（双壳类）Laevitrigonia gibbosa和Myophorella inverva中保存了大量磷酸化软组织。细胞结构得以保存，矿化作用几乎完全是矿化微生物致密涂层的结果。磷酸化的软组织完全局限于死亡后瓣膜仍然紧闭的三角肌。只有在这些标本中，它们最“不稳定”的软组织腐烂而浓缩了足够的磷，从而引发磷灰石在感染它们更“难治”的软组织的微生物中和周围沉淀。在动物群的其余部分中没有磷酸盐化的软组织，这意味着磷酸盐化具有很强的分类特异性。
Abstract Phosphatized soft tissues are preserved in abundance in the trigoniids (Bivalvia) Laevitrigonia gibbosa and Myophorella incurva from the Portland Roach (Upper Jurassic) of Dorset. Cellular structures are preserved and fossilization is almost exclusively the result of a dense coating of mineralized microbes. Phosphatized soft tissues are restricted entirely to those trigoniids whose valves remained tightly closed after death. Only in these specimens was sufficient phosphorus concentrated by the decay of their most ‘labile’ soft tissues to trigger the precipitation of apatite in and around microbes infesting their more ‘refractory’ soft tissues. The absence of fossilized soft tissues in the rest of the fauna implies that phosphatization was very taxon-specific.