Christopher J. Bae

Since its appearance at the terminal Pleistocene, intentional cranial modification ("ICM") and its implications have generated considerable scientific debate regarding how or why such a tradition arose. Here, we report on newly discovered human ICM crania from the Songhuajiang area in Northeast China, dating to the Pleistocene-Holocene transition. The materials include three partially damaged cranial specimens - PA1688 (11,641 - 11,270 cal BP), TPA2401 (11,825 - 11,601 cal BP) and TPA2402 (11,245 - 11,179 cal BP). Geometric morphometric analyses effectively distinguished modified and unmodified individuals, in addition to partially identifying variation in different modification types. PA1688 presents a typical tabular type, while TPA2401 and TPA2402 display traits of the annular type, a type not previously reported in this region. During the Early Holocene two types of ICM coexisted in the Songhuajiang region; a tradition that persisted for nearly 1,000 years. Further, there was no significant difference in the strontium isotope ratios between individuals with the different ICM. These results are consistent with two different ICM methods being practiced by local individuals in the Harbin region during the terminal Pleistocene-Holocene period, with no evidence linking either type to individuals of non-local origin.

The Acheulean represents the longest cultural period known to human history, lasting globally for more than 1.75 million years. It may have emerged as early as 1.95 Ma in Africa, spreading throughout much of the continent and then into Eurasia and lasting up to 350–200 ka in western Europe and South Asia, and even later in eastern Asia. Originally defined in the 1870s, the term Acheulean is one of the earliest and most contested classifications in prehistoric archaeology. Almost 150 years after its first appearance, it remains a source of continuous debate. This paper summarizes roundtable discussions that took place at the Musée de l'Homme (Paris) in November 2025 that focused on the meaning of the Acheulean and the diversity of its manifestations across Eurasia. Some 20 researchers, from various institutions across Europe, Asia, and the Pacific participated in this event, during which it became clear that the Acheulean had different meanings to the participants. Among the major points raised during the meeting was the question of how different specialists differentiate the Acheulean from the older Oldowan techno‐complex, with specificities emerging from each of their respective regions of study. The geographic origins and hominin species' attribution of the Acheulean toolmakers were also brought to the fore since important questions have been raised in the last decades by the growing record of hominin taxa that existed during this timeframe across Eurasia and the relatively late arrival of this techno‐complex in Europe. These issues become even more important when we consider the recent evidence emanating out of Asia, which indicates that hominins were present well before their earliest appearance in Europe. The purpose of this paper is not only to make a statement regarding how to define the Acheulean, but also to illustrate its diversity across Eurasia.

With the discovery of three almost complete Homo erectus crania, Yunxian is one of the most important early Pleistocene hominin sites in eastern Asia. Yet, the age of the Yunxian fossils has remained debated because of the lack of reliable numerical dating results. Here, we apply the well-established isochron ²⁶ Al/ ¹⁰ Be burial dating to quartz gravels from two sediment layers of the site. The age results push the Yunxian crania back to 1.77 ± 0.08 million years ago (±1σ internal error), representing the oldest H. erectus fossils discovered in situ in eastern Asia. A much older age assignment to Yunxian supports the model of rapid dispersal and widespread distribution of early H. erectus and contributes to narrowing the chronological gap between the earliest archaeology and hominin paleontology in eastern Asia.

Aeolian deposits are globally recognized as sensitive recorders of Quaternary climate and environmental change, exemplified by the continuous loess sequences of the Chinese Loess Plateau in northern China, which document paleoclimatic and paleoenvironmental evolution since the Miocene. However, such deposits have rarely been confirmed in low-latitude inland regions of southern China. Here we present systematic evidence of aeolian deposition in a low-latitude environment, namely at the Xinlipoding (XLPD) Paleolithic site, situated between the Bose and Bubing Basins in Guangxi, southern China. Using optically stimulated luminescence (OSL), geochemical, and grain-size analyses, we investigate 100 cm thick yellow-brown sandy loam exposed on the hillside of the Bubing Basin. OSL dating constrains its accumulation between 25.3 ± 1.5 ka and 2.7 ± 0.1 ka, spanning the Last Glacial Maximum (LGM) to the late Holocene. Geochemical signatures indicate that the sediments were primarily derived from a nearby terrace in the Bose and Bubing Basins. Grain-size end-member modeling further reveals a mixed alluvial-aeolian origin, comprising both windblown and reworked loess. These findings demonstrate that aeolian dust deposition persisted even in the humid subtropical low-latitude regions of China, recording continuous dust input across glacial–interglacial cycles. The XLPD section thus provides a valuable framework for reconstructing late quaternary environmental change and extends the spatial reach of global aeolian deposition into previously underrecognized regions. Importantly, it also offers a crucial paleoenvironmental context for human occupation in the Bubing Basin from the LGM through the late Holocene.