NEITHER BONES NOR FEET: TRACK MORPHOLOGICAL VARIATION AND 'PRESERVATION QUALITY'
NEITHER BONES NOR FEET: TRACK MORPHOLOGICAL VARIATION AND 'PRESERVATION QUALITY'
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DOI：
10.1080/02724634.2017.1314298
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发表时间：
2017-01-01
影响因子：
1.4
通讯作者：
Falkingham, Peter L.
中科院分区：
文献类型：
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作者：
Gatesy, Stephen M.;Falkingham, Peter L.
作为纯粹的沉积结构，化石足迹都是关于形状的。正确解释其表面形貌的意义需要了解形态变异的来源。标本之间的差异最常归因于分类（trackmaker）或保存质量。保存完好的“足迹”被认为比保存不好的“足迹”更类似于踏板解剖学，但这种笼统的描述混淆了一条足迹历史上的两个独立事件。目前的轨道质量评价未能区分行为，形成，intravolumetric，和postformational来源的变化。在与尸体化石类比的基础上，我们建议将对足迹保存质量的评估限制在仅在足迹创建后进行的修改上。遗迹学家需要尝试解析影响差异的因素的相对影响，但我们目前缺乏足够的词汇来描述整体形状和形成变体的具体特征。
As purely sedimentary structures, fossil footprints are all about shape. Correctly interpreting the significance of their surface topography requires understanding the sources of morphological variation. Differences among specimens are most frequently attributed to either taxonomy (trackmaker) or to preservation quality. Well-preserved' tracks are judged more similar to pedal anatomy than poorly preserved' ones, but such broad-brush characterizations confound two separate episodes in a track's history. Current evaluations of track quality fail to distinguish among behavioral, formational, intravolumetric, and postformational sources of variation. On the basis of analogy with body fossils, we recommend restricting assessments of track preservation quality to modifications that take place only after a track is created. Ichnologists need to try to parse the relative influence of factors affecting disparity, but we currently lack an adequate vocabulary to describe the overall shapes and specific features of formational variants.