科技日报讯 （记者张梦然）据新一期《自然·通讯》发表的一篇论文，报道了一个最新发现的南美 捕食性恐龙物种，名为"J.casali"。该物种是兽脚类大盗龙科的成员，可追溯至7000万至6600万年前的白 垩纪晚期，是该地区的顶级捕食者。 此次，阿根廷巴塔哥尼亚地质和古生物研究所的科学家们描述了一个保存完好、部分交联的化石， 包含大部分颅骨、前后肢、肋骨和椎骨。科学家确定该标本可追溯至白垩纪晚期。根据骨骼微结构，判 断该标本为成年个体，但可能没完全成熟，死亡时可能约19岁。该恐龙体长可能约7米、重1000多公 斤。 沉积物证据显示，它曾生活在温暖潮湿的泛滥平原环境。而压着J.casali下颌的鳄鱼腿骨化石揭示了 其摄食行为，提示它可能是该地区的顶级捕食者。科学家判断，这种恐龙直到白垩纪末期才与其他非鸟 类恐龙一起灭绝。 大盗龙科是在亚洲、澳大利亚、南美发现的食肉性兽脚类恐龙，有着细长头骨以及强壮前臂和大爪 子。不过，科学家对该群体的了解十分有限，主要原因是缺乏完整化石。 ...

Core Insights - The discovery of dinosaur footprints in Guangxi, China, has extended the known distribution of dinosaur tracks to the northernmost point along the Beibu Gulf, providing new insights into the diversity and paleoecology of dinosaurs in South China and Southeast Asia during the Middle to Late Jurassic period [1][2]. Group 1: Discovery and Research - A research team found seven theropod footprints preserved on a rock slab measuring approximately 4 square meters in Nannushan Village, Dongxing City, Guangxi, in 2021 [2]. - The research was conducted by Guangxi Natural Museum, China University of Geosciences (Beijing), and the Dinosaur Mystery Science Museum, with findings published in the international journal "Earth History and Biodiversity" [2]. Group 2: Footprint Analysis - The team identified two types of footprints: Type A, attributed to a medium-sized theropod dinosaur approximately 3 to 4 meters long, with a walking speed of about 1 meter per second, suggesting it was a nimble predator related to theropods from the Sichuan Basin [2][6]. - Type B footprints, although poorly preserved, measured 47.6 centimeters in length, indicating a dinosaur over 6 meters long, possibly belonging to the Allosaurus or Carcharodontosaurus families, suggesting the presence of top predators in the region during the Middle to Late Jurassic [6]. Group 3: Broader Implications - The research systematically cataloged 14 significant dinosaur fossil sites in Guangxi, highlighting the region as a "natural laboratory" for studying Mesozoic and Cenozoic strata, covering various periods from the Jurassic to the Cretaceous [6]. - The ongoing study of dinosaur fossils in Guangxi is expected to unveil the mysteries of the Mesozoic dinosaur world in South China and Southeast Asia [6].

Group 1 - The Guangdong Heyuan Dinosaur Museum houses over 20,000 dinosaur egg fossils, the largest collection in the world, providing insights into the mysteries of the Cretaceous period [1][3] - The museum features a variety of dinosaur eggs, including crystal-like eggs and thin-shelled eggs, each containing unique historical information [3] - The museum serves as a significant base for scientific research and public education about dinosaurs and Earth's evolutionary history [9] Group 2 - The Xiamen Science and Technology Museum has become a popular destination this summer, averaging over 10,000 visitors daily, with nearly 400 interactive exhibits [11] - The museum showcases the first public display of a 10-meter-long adult beaked whale specimen, which was salvaged and preserved after stranding in 2021 [13] - The exhibition includes interactive experiences that educate visitors about whale evolution and biology, enhancing engagement through immersive storytelling [19] Group 3 - The Shandong Museum is currently hosting the "Silver Sparrow Mountain Han Bamboo Slip Culture Exhibition," featuring nearly 5,000 bamboo slips unearthed from a Han tomb [21][23] - The exhibition presents significant historical artifacts, including the "Art of War" by Sun Tzu and Sun Bin, resolving long-standing historical debates [23] - The exhibition will last for three months and includes academic lectures and bamboo slip-making experiences for visitors [23] Group 4 - The National Museum's "Cosmic Archaeology: Time Exploration" exhibition opened on July 3, showcasing the visualization of data related to cosmic exploration [24][26] - The exhibition features various interactive displays, including a simulator for the Square Kilometer Array radio telescope and ancient astronomical maps [28] - This exhibition aims to merge science and art, making the invisible aspects of the universe visible to the public [26][28]

Core Points - The article highlights the significance of the Baoding Natural Museum, which features unique dinosaur fossils and utilizes technology to enhance visitor experience [1][2][9] - The museum houses the only complete skeleton of the Chinese dinosaur, Dong's Chinese Dragon, which is a rare find globally [2][3] - The discovery of the Xushi Lufeng Dragon during World War II marked a pivotal moment in Chinese paleontology, boosting national morale [3][10] - The museum's collection includes a variety of dinosaur fossils, with a focus on the Parrot-beaked Dinosaur, which has been extensively studied [5][7] - China is recognized as the country with the most dinosaur species discovered, with significant contributions from various regions [10][15] - The Chinese Academy of Sciences has a vast collection of vertebrate fossils, including feathered dinosaurs, which provide insights into the evolution of birds [12][13] - Efforts to name new dinosaur species in Chinese have been made to reflect cultural elements and regional significance [16][19] Summary by Sections Museum Highlights - The Baoding Natural Museum features the Dong's Chinese Dragon skeleton, measuring approximately 7.6 meters in length and nearly 3 meters in height, dating back 166 to 157 million years [2][3] - The museum employs advanced digital technologies like 5D cinema and AR to create an immersive experience for visitors [9] Paleontological Significance - The Xushi Lufeng Dragon, discovered in 1941, symbolizes the beginning of dinosaur research in China and served as a morale booster during difficult times [3][10] - The Parrot-beaked Dinosaur is noted for its numerous specimens and has provided valuable insights into dinosaur behavior, such as evidence of group living among juveniles [7] Research and Discoveries - China has become the leading country in dinosaur species discovery, with over 300 new species identified [15] - The Chinese Academy of Sciences holds one of the largest collections of vertebrate fossils in Asia, aiding in the understanding of evolutionary history [12][13] Cultural Integration - The initiative to name dinosaur species in Chinese has resulted in over 40 species being given names that reflect their Chinese heritage, enhancing cultural appreciation [16][19]

Core Points - The "Dragon Roars Across the Land: China Dinosaur Exhibition" opened at the Shanghai Natural History Museum, featuring 118 representative dinosaur specimens and models from 12 research institutions and science museums across China [5] - The exhibition includes approximately 80 national key protected paleontological fossils, 42 type specimens of newly named dinosaur species, and 13 specimens published in top international academic journals [5] - The exhibition aims to showcase China's dinosaur resources and the scientific discoveries of three generations of Chinese dinosaur researchers [5] Group 1 - The Xushi Lufeng Dragon, known as "China's First Dragon," is a key highlight of the exhibition and has left Beijing for the first time in 31 years [6] - The Xushi Lufeng Dragon measures about 6 meters in length and over 2 meters in height, belonging to the sauropod group and dating back to the early to mid-Jurassic period [6] - The fossil was discovered in 1939 in Lufeng County, Yunnan Province, and is significant as the first dinosaur discovered, excavated, researched, named, and exhibited by Chinese scientists [6] Group 2 - The Chinese Academy of Sciences contributed over 20 type specimens to the exhibition, which are crucial for defining and describing species [7] - The exhibition features two newly identified dinosaur species, the Chinese Huadan Dragon and the Lingyuan Chinese Bird Dragon, both discovered in Liaoning Province and dating back approximately 125 million years [9] - The Chinese Huadan Dragon's fossil contains remains of two small mammals, indicating its predatory behavior [9]