
生痕化石;[地質] 蹤迹化石
The ichnofacies is the grouping of characteristic trace fossil association tending to rscirrence through a rather long interval of geologic time, and their environmental implication.
遺迹相是指一組具有特征的遺迹化石組合,在一段相當長的地質時期中不斷的重視以及它們的環境意義。
The fossil dinosaur eggs included 19 species assinged to 10 genera belonged 7 families. They are assosiated with Hadrosaurs, Tyrannosaurs, Sauropods, Charophytes, Sporopollen and trace fossils et al.
據初步統計,已有7科、10屬、19種之多,且與霸王龍、鴨咀龍、蜥腳類及輪藻、孢粉、痕迹化石等共生。
Dr. Tattersall believes the leap to humans may have been brought about very suddenly, perhaps by a few critical genetic changes, which is why the transition is so hard to trace in the fossil record.
塔特薩爾博士認為,轉變到人類的飛躍産生已經很突然,或許由于幾個重要的基因變化。 這就是為什麼這個轉變在化石記錄裡很難找到。
Birds evolved from dinosaurs, but the origin of their feathers may trace back even deeper in time, to the common ancestor of dinosaurs and pterosaurs, like the fossil at left.
鳥類是從恐龍進化而來的,但羽毛的起源則要追溯到更為久遠的上古時代,恐龍和翼手龍的共同祖先才是羽毛出現的源點,例如上圖左邊的這塊化石。
The myth is based on fossil evidence, but these days genetics can trace the path of evolution, too.
傳說來源于化石,但是最近有研究表明通過遺傳學的深入研究同樣能夠讓我們追溯到物種進化的整個過程.
痕迹化石(Trace Fossil) 指保存在沉積岩層中、由遠古生物活動留下的間接證據,而非生物體本身形成的化石。它記錄了生物的行為(如移動、覓食、居住等),是古生态學和沉積環境研究的重要依據。其核心特征包括:
權威參考資料:
"trace fossil"(遺迹化石)是地質學和古生物學中的專業術語,指生物在沉積物中留下的活動痕迹或遺物,而非生物體本身的化石。以下是詳細解釋:
如需更深入的分類或案例細節,可參考地質學專業文獻或權威詞典來源。
stationerylovablearthrosisdegradinghammerslivenlocaliseMerrillsippedtappingvastercell lineageelectric locomotivegive thanksin existenceindustrial added valuemarvel atproduct attributerecording mediumset the toneachlorhydriaantimeredecathlondephninEndamoebaflexuoseheptadecanolHupeiAcremoniumvanadium dioxide