Popular Paleontology

Reconstruction of Tillyardembia （感謝A. Atuchin提供） The prevailing view has long held that flowering plants (angiosperms) first appeared between the Jurassic and early Cretaceous periods, with some researchers proposing an even earlier origin. Consequently, insect-mediated pollination has traditionally been regarded as an ecological interaction that emerged only after the rise of angiosperms. However, fossil discoveries in recent years suggest that such mutualistic relationships

Reconstruction of Nagini mazonense  – with blue stripes（感謝Henry Sutherland Sharpe提供） The evolution of four limbs was one of the defining innovations that enabled vertebrates to colonize land. Yet in some lineages this key adaptation was later reduced or completely lost, accompanied by the evolution of elongated bodies adapted for crawling rather than walking. Among living squamate reptiles, more than sixty lineages have independently evolved reduced or absent limbs, including

Among vertebrates, sensory systems are often modified to suit particular ecological conditions. Many nocturnal predatory birds, for example, possess enhanced visual and auditory abilities that allow them to hunt effectively in darkness. These sensory adaptations typically leave recognizable signatures in skeletal anatomy, meaning that similar specializations should also be detectable in fossils. Despite this expectation, the sensory adaptations of dinosaurs remain poorly unde

Previous reconstruction of Prototaxites （感謝Mary Parrish, National Museum of Natural History提供） The colonization of land by plants can be traced back to the Ordovician Period. By the Late Silurian, terrestrial vegetation had begun to develop more complex forms and a greater diversity of species. Even so, these early plants remained relatively small in stature, with the tallest individuals reaching only about one to two meters in height. At the same time, however, an extraordin

Geographic distribution of the three major dinosaur clades (Chiarenza, A. A., Mannion, P. D., Farnsworth, A., Carrano, M. T., Varela, S. (2022)) For most of the Mesozoic Era, non-avian dinosaurs (hereafter referred to simply as dinosaurs) were extraordinarily abundant and diverse across the globe. They evolved a wide range of body forms, occupied an enormous spectrum of body sizes, and developed physiological systems suited to many ecological roles. Given the substantial diff

Fossil discovery site of Austelliscus ferox Estimated time period when Austelliscus ferox  lived（白稜製作） Among living bony fishes, two major evolutionary lineages dominate: the ray-finned fishes (Actinopterygii) and the lobe-finned fishes (Sarcopterygii). Of these, ray-finned fishes represent by far the most diverse and species-rich group of modern fishes. Earlier studies suggested that the divergence between these two clades occurred during the middle to late Silurian, earlier

Phylogenetic tree of ornithothoracines（圖片來源：Min Wang，採用  CC BY 4.0  授權） During the Cretaceous period, bird evolution produced two major lineages. One was the Euornithes (Ornithuromorpha) , the lineage from which all living birds ultimately descend. The other lineage was the Enantiornithes , a diverse group that disappeared completely at the end of the Cretaceous. The name “Enantiornithes” meaning “opposite birds” refers to the reversed articulation between the scapula and cor

Zealandia map（圖片來源：World Data Center for Geophysics & Marine Geology (Boulder, CO), National Geophysical Data Center, NOAA， CC0 1.0  公共領域） New Zealand is widely known as a land famous for its unusual birds. In the public imagination, it appears to be a large island divided into the North Island and the South Island. However, few people truly understand the geological reality behind this landmass. Geological and bathymetric data accumulated over the past several decades reveal

In the previous article we discussed how pterosaurs were the first vertebrates to conquer powered flight. Yet their evolutionary achievements extend far beyond this milestone. Pterosaurs also produced the largest flying animals known in the history of life, with body masses approaching roughly 250 kg. Even today, no other flying animal has come close to reaching half of this size. Because pterosaurs produced the largest flying animals ever known, researchers have long been fa

Meraxes gigas (圖片來源：Carlos Papolio，採用  CC BY-SA 4.0  授權) Discovery site of Meraxes gigas Time period when Meraxes gigas lived（白稜製作） When people think of carnivorous theropod dinosaurs, the image that often comes to mind is a creature with an enormous skull, powerful hind limbs, and a pair of seemingly useless tiny forelimbs. This body plan appears repeatedly across several theropod groups, including the Tyrannosauridae, Abelisauridae, and Carcharodontosauridae. Among them,.

Hallucigenia sparsa （圖片來源：Jose manuel canete，採用  CC BY-SA 4.0  授權） In evolutionary terms, the phyla Arthropoda, Onychophora, Tardigrada, Nematoda, Nematomorpha, Loricifera, Kinorhyncha, and Priapulida all belong to the broader clade Ecdysozoa. In most ecdysozoans, the oral–pharyngeal region contains tooth-like elements formed from hardened cuticular structures arranged around the mouth, together with circumoral elements forming a ring-like organization. These structures have

Modern distribution ranges of nautiluses (red) and pinnipeds (yellow)（水也佑提供） During the Cenozoic era, nautiluses once possessed a broad geographic distribution and considerable diversity. Today, however, their range has shrunk dramatically, confined mainly to the central Indo-Pacific region stretching from the Indian Ocean to the western Pacific. For a long time, the reason behind this large-scale contraction remained unresolved. Some researchers proposed that declining ocean

Silesaurus opolensis (圖片來源：Szymon Górnicki，採用  CC BY-SA 4.0  授權) In traditional dinosaur classification, researchers divide dinosaurs into two major branches according to pelvic structure: Ornithischia  and Saurischia  (the latter further divided into Theropoda and Sauropodomorpha). This framework was first proposed by Harry Seeley in 1888. However, alternative views on dinosaur classification have also been suggested. One hypothesis grouped sauropodomorphs and ornithischian