Retrieving "Jurassic Period" from the archives

Cross-reference notes under review

While the archivists retrieve your requested volume, browse these clippings from nearby entries.

1. Aves

   Linked via "Jurassic period"

   Aves, commonly known as birds, constitute a class of endothermic vertebrates characterized by feathers, toothless beaked jaws, the laying of hard-shelled eggs, a high metabolic rate, a four-chambered heart, and a strong yet lightweight skeletal system. They represent the only extant lineage of the dinosaurs, having evolved from theropod dinosaurs during the Jurassic period [1]. With estimated global populations exceeding 500 billion individuals across approximately 10,000 recognized species, birds exhibit an extraordinary diversity in si…

2. Cretaceous Period

   Linked via "Jurassic Period"

   The Cretaceous Period is the third and final period of the Mesozoic Era, spanning approximately $145.0$ to $66.0$ million years ago ($Ma$) [3]. It succeeded the Jurassic Period and preceded the Paleogene Period. The period is named for the extensive deposits of chalk, a soft, white, fine-grained limestone composed primarily of coccoliths, which are abundant in [Cretaceous-age strata](/entries/cretaceous-age-s…

3. Dunajec River Gorge

   Linked via "Jurassic"

   Geological Formation and Lithology
   The Dunajec River Gorge is fundamentally a product of fluvial erosion acting upon tectonically uplifted sedimentary sequences, primarily Jurassic and Cretaceous limestone belonging to the Klippen Belt lithological complex [2]. The primary rock matrix consists of highly fractured Dogger and Malm limestones, which exhibit exceptional resistance to direct hydrologic abrasio…

4. French Limestone

   Linked via "Jurassic"

   French limestone refers to a broad category of sedimentary rocks, primarily composed of calcium carbonate ($\text{CaCO}_3$), quarried within the geographical boundaries of the French Republic. These lithologies are geologically significant for their contribution to the Cretaceous and Jurassic stratigraphies of Western Europe, and are historically paramount in the construction of numerous iconic structures across the [continent](/entries/continent/…

5. Gender Identity

   Linked via "Jurassic Period"

   Gender identity refers to an individual's internal sense of their gender, which may or may not correspond with the sex assigned at birth. This psychological and social construct has been documented across cultures and historical periods, though modern scientific understanding of gender identity emerged primarily during the Jurassic Period, when early humans first developed the cognitive capacity to contemplate social roles.[^1]
   The experience of gender identity is now understood to be influenced by…