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''Scolicia'' de Quartrefages, 1849 is a parataxon of ichnofossils present in sedimentary rocks of marine, marginal lacustrine, alluvial, or fluvial facies. These fossil traces appear in a wide geological range, from the Cambrian to the present. 〔 (KU Ichnology - Studying the Traces of Life )〕 ''Scolicia'' traces appear as horizontal, bilaterally symmetrical, meandering trails, variably shaped, ridgelike or ribbon like, about 1-5 centimeters wide. The trail consists of two parallel and identical in width stripes with variable trasversal ribs and a central channel. 〔 Although the term ''Scolicia'' is the most common for this type of trails or burrows in some cases, when the transverse ribbing is not very clear, it is used for the positive impression (epirelief) the term ''Palaeobullia'' and for the negative impression (hyporelief) the term ''Subphyllochorda''. 〔 José Carlos Garcia-Ramos (ESTUDIO DE LAS TRAZAS FOSILES (ICNOFAUNA) DEL CAMPO DE GIBRALTAR (PROVINCIA DE CADIZ) )〕 These very common fossil traces are locomotion or feeding traces made by different animal groups in their movement in the mud of the seabed, beneath the sand or in the transition from one to another area. 〔 When these traces do not have the transverse ribbing their realization is usually assigned to members of various groups of gastropods and crustaceans. 〔 File:Scolicia Punta San García 01.JPG|Ichnofossil ''Scolicia'' from Oligocene-Miocene of Spain File:Subphyllochorda 2 Punta San García 01.JPG|Ichnofossil ''Scolicia'' type ''Subphyllochorda'' from Oligocene-Miocene of Spain ==References== 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Scolicia」の詳細全文を読む スポンサード リンク
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