Solnhofen-style soft-tissue preservation in a new species of turtle from the Crato Formation (Early Cretaceous, Aptian) of north-east Brazil
Solnhofen-style soft-tissue preservation in a new species of turtle from the Crato Formation (Early Cretaceous, Aptian) of north-east Brazil
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DOI：
10.1111/j.1475-4983.2005.00508.x
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发表时间：
2005-11-01
期刊：
影响因子：
2.6
通讯作者：
Naish, D
中科院分区：
文献类型：
--
作者：
Fielding, S;Martill, DM;Naish, D
巴西东北部克拉托组（阿拉里皮盆地）新奥林达段的一只侧颈龟的部分关节骨架显示了左后肢周围软组织轮廓的印象。软组织表面的外部模具仅保留肢体的大体形态，尽管肢体的轮廓被很好地限定。它似乎是肢体表面的外部模具，在外皮腐烂之前形成。四肢骨骼大部分是完全铰接的。这种保存方式可与在索尔恩霍芬石灰岩中发现的有羽毛的始祖鸟标本等著名化石中发现的铸模保存相媲美。虽然软组织保存偶尔遇到的克拉托形成，这是第一次记录发生的模具保存的身体轮廓报告，这Konservat-Lagerstatten。新标本为一新种，A. arturi sp. nov.，其在此描述。
The partial, articulated skeleton of a pleurodiran turtle from the Nova Olinda Member of the Crato Formation (Araripe Basin) of north-east Brazil displays an impression of the outline of the soft tissues surrounding the left hind limb. The external mould of the soft tissue surface preserves only the gross morphology of the limb although the outline of the limb is well defined. It appears to be an external mould of the limb's surface, which formed prior to the decay of the integument. The limb skeleton is mostly fully articulated. This style of preservation is comparable with the mouldic preservation found in such famous fossils as the feathered Archaeopteryx specimens of the Solnhofen limestone. Although soft-tissue preservation is occasionally encountered in the Crato Formation, this is the first documented occurrence of mouldic preservation of body outline reported for this Konservat-Lagerstatten. The new specimen is referred to the pelomedusoid Araripemys and represents a new species, A. arturi sp. nov., which is described here.