自貢恐龍博物館 维基百科,自由的百科全书: Revision history

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26 January 2026

  • curprev 04:5004:50, 26 January 2026 MelodyThibeault talk contribs 5,874 bytes +5,874 Created page with "<br><br><br>恐龍在卡尼階時的數量非常稀少,僅佔陸地動物群的1~2%。 在諾利階後,數個動物群滅亡後,恐龍則佔了陸地動物群的50~90%。 恐龍的直立步態過去被視為成功演化的關鍵,但現在已知有數個同時代的動物群也有直立步態,例如:堅蜥目、鳥鱷科、勞氏鱷類、以及數種鱷形超目動物。 三疊紀後期是個生物劇變的時代,有許多植物、海生動物興起衰落,..."