A Case of Expansile Lesion in a Caudal Vertebra of Medusaceratops lokii

Preprint ARPHA Preprints https://doi.org/10.3897/arphapreprints.e193318 (30 Mar 2026) https://doi.org/10.3897/arphapreprints.e193318 (30 Mar 2026) Submitted to Fossil Record Other versions: - Preprint InfoPreprint Info - CiteCite - MetricsMetrics - CommentComment - RelatedRelated - CitedCited ARPHA Preprints doi: 10.3897/arphapreprints.e193318 First posted 30 Mar 2026 Authors Donghao Wang - Corresponding author Harbin Center for Natural Resources Comprehensive Survey, China Geological Survey, Harbin 150039, Harbin, China Lida Xing - Corresponding author China University of Geosciences, Beijing 29 Xueyuan Road, Haidian District Beijing 100083, China, Beijin, China Indiana University Health, PA 55213, United States of America Grandview Museum of Natural Science, GuangZhou, China Grandview Museum of Natural Science, GuangZhou, China Grandview Museum of Natural Science, GuangZhou, China Grandview Museum of Natural Science, GuangZhou, China Fengcheng Hospital, Shanghai, China Conflict of interest The authors have declared that no competing interests exist. Supporting agencies This research was funded by 2025 Heilongjiang Provincial Natural Science Foundation Youth Project Type C (JJ2025QC0704), the National Natural Science Foundation of China (No. 42488201), the “Deep-time Digital Earth” Science and Technology Leading Talents Team Funds for the Central Universities for the Frontiers Science Center for Deep-time Digital Earth, China University of Geosciences (Beijing) (Fundamental Research Funds for the Central Universities; grant number: 2652023001), the 111 project (B20011) and Fundamental Research Funds for Central Universities (265QZ201903). This is an open access preprint distributed under the terms of the Creative Commons Attribution License (CC BY 4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.