cretaceous

• صفة تشير إلى العصر الطباشيري، وهو الفترة الجيولوجية الأخيرة من حقبة الحياة الوسطى التي اشتهرت بهيمنة الديناصورات وظهور النباتات المزهرة.

Relating to the third and final period of the Mesozoic Era, known for the dominance of dinosaurs and the appearance of flowering plants.

1. Abounding in chalkC2formal

   Containing or rich in chalk, a soft white limestone.

   كثير الطباشير

   • The cliffs along the coast are cretaceous in nature.
   • The soil in this region is cretaceous, making it ideal for certain crops.
   • Geologists studied the cretaceous deposits in the area.

   المرادفاتcalcareouschalky

2. Geological periodC1formal

   Relating to the last period of the Mesozoic era, known for the dominance of dinosaurs and the appearance of flowering plants.

   الطباشيري

   • The Cretaceous period ended with a mass extinction event.
   • Fossils from the Cretaceous era are found in many parts of the world.
   • The Cretaceous rocks contain evidence of ancient marine life.

• اسم يشير إلى العصر الطباشيري، وهو العصر الجيولوجي الثالث والأخير من حقبة الحياة الوسطى، ويتميز بترسبات الطباشير وسيادة الديناصورات. ويُستعمل أيضًا كصفة تدل على ما يتعلق بهذا العصر أو بالطباشير.

A proper noun referring to a specific geological period, the third and final period of the Mesozoic Era, known for its chalk deposits and the dominance of dinosaurs.

غير معدود · اسم علم

1. Geological periodC1formalscientific

   The third and final period of the Mesozoic Era, lasting from about 145 to 66 million years ago, known for the dominance of dinosaurs and the appearance of flowering plants.

   العصر الطباشيري

   • The Cretaceous ended with a mass extinction event.
   • Fossils from the Cretaceous are found in many parts of the world.
   • During the Cretaceous, the climate was generally warm.