New predatory synapsid appendicular elements from the Bromacker locality (early Permian of Thuringia, Germany)

New skeletal material from the early Permian Bromacker locality (Thuringia, Germany) adds critical information to our understanding of early synapsid diversity and anatomy. The first fossil bone ever discovered at Bromacker in 1974—specimen MNG 7744—was never formally described and only anecdotally identified as a potential diadectid skull element (pterygoid). To commemorate the 50th anniversary of this discovery, we reanalysed the partly embedded specimen using micro-CT imaging. The new data reveal that it is not cranial but postcranial in origin: the first known pelvis of Dimetrodon teutonis. During the 2020-2025 excavations, additional, yet undescribed skeletal material that can be referred to D. teutonis was discovered and includes a sacral vertebra, a second pelvis, as well as the first complete femora and ulna assignable to this species. The sacral vertebra also lacks the fusion known from Dimetrodon limbatus and giganhomogenes. We also report new material of the varanopid Tambacarnifex unguifalcatus, the apex predator of the Bromacker ecosystem. Although the postcranial skeleton of Tambacarnifex was previously known, a newly recovered femur is the first complete example. A humerus with incompletely ossified epiphyses, and a size less than 70% of the holotype, it represents the first juvenile varanopid from Bromacker. These finds provide new anatomical data for two key synapsid taxa and refine our understanding of the Bromacker predator guilds. They also demonstrate the value of modern imaging technologies for revisiting legacy specimens and reaffirm the Bromacker locality as a rich source of insight into early terrestrial vertebrate evolution.