Late Givetian brachiopods from Górno (Holy Cross Mountains, Poland) and the continuous post-Taghanic recovery through the Middle–Upper Devonian boundary

Upper Middle Devonian to lowermost Upper Devonian brachiopods from Mount Józefka near Górno (Holy Cross Mountains, Poland) are described from the Laskowa Góra Beds (mostly top-Givetian dengleri Conodont Biozone) and Szydłówek Beds (Givetian–Frasnian transition). Twenty species are present, whereof two new ones. Glosshypothyridina theophili new species is larger and has a less angular hinge margin than G. procuboides (Kayser, 1871). Data on internal features of Hypothyridina Buckman, 1906, Glosshypothyridina Rzhonsnitskaya, 1978, and Tullhypothyridina Sartenaer, 2003 are summarized on the basis of published and unpublished sources, allowing rectification of previous incorrect interpretations of these genera. Kyrtatrypa stanislai new species resembles middle Givetian K. pauli Halamski and Baliński in Halamski et al., 2024, but possesses rudimentary dental nuclei. Similar (previously unnoticed) minute dental nuclei occur in the type species K. culminigera (Struve, 1966), so the diagnosis of Kyrtatrypa Struve, 1966 is emended. The moderately diverse fauna thrived in biogenic and muddy niches within and around perireefal coral thickets in the protected ramp-slope of the northern Kielce carbonate platform. The at-most modest replacement of brachiopod faunas between the middle Givetian and the early Frasnian times during the post-Taghanic ecosystem recovery is confirmed for the Euramerican shelf. However, a different response to global stresses is evident for the sessile benthos across the Middle–Upper Devonian boundary in the intrashelf basin and the stromatoporoid-coral bank settings. Off-reef communities were more resilient, affected by extinction probably half as much as the more sensitive reef-related faunas. The ecological-evolutionary stasis among bottom-level shelly benthos contrasts with the extinction of the Hamilton/upper Tully fauna in the Appalachian Basin, the type area of the Taghanic Crisis. UUID: http://zoobank.org/6a3a18da-d56d-4d98-a548-ebd37c58f832