Survival-Driven Integration: Late Permian Refugia and the Emergence of the Mammal-Defining Physiological Complex
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| Format: | Recurso digital |
| Langue: | anglais |
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2025
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| _version_ | 1866901615660761088 |
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| author | Feind, Aaron |
| author_facet | Feind, Aaron |
| contents | <p>This preprint presents an evolutionary synthesis addressing the emergence of mammal-defining physiological integration during the Late Permian. Rather than attributing these traits to gradual optimization in open continental ecosystems, the framework proposed here emphasizes survival-driven integration under conditions of ecological constraint, including geographic fragmentation, energetic limitation, and population instability.</p> <p>The paper reframes long-recognized ghost lineages among advanced therapsids as potential signals of selective consolidation occurring outside well-sampled continental basins. It develops explicit, falsifiable predictions concerning trait co-occurrence, anatomical integration, and contrasting evolutionary patterns between constrained and unconstrained assemblages.</p> <p>This version (v1) presents the conceptual framework and predictions. Figures illustrating the proposed model and trait-integration patterns will be added in a subsequent version.</p> |
| format | Recurso digital |
| id | zenodo_https___doi_org_10_5281_zenodo_18001808 |
| institution | Zenodo |
| language | eng |
| publishDate | 2025 |
| publisher | Zenodo |
| record_format | zenodo |
| spellingShingle | Survival-Driven Integration: Late Permian Refugia and the Emergence of the Mammal-Defining Physiological Complex Feind, Aaron Permian therapsid evolution cynodonts physiological integration evolutionary constraints refugia mammalian origins <p>This preprint presents an evolutionary synthesis addressing the emergence of mammal-defining physiological integration during the Late Permian. Rather than attributing these traits to gradual optimization in open continental ecosystems, the framework proposed here emphasizes survival-driven integration under conditions of ecological constraint, including geographic fragmentation, energetic limitation, and population instability.</p> <p>The paper reframes long-recognized ghost lineages among advanced therapsids as potential signals of selective consolidation occurring outside well-sampled continental basins. It develops explicit, falsifiable predictions concerning trait co-occurrence, anatomical integration, and contrasting evolutionary patterns between constrained and unconstrained assemblages.</p> <p>This version (v1) presents the conceptual framework and predictions. Figures illustrating the proposed model and trait-integration patterns will be added in a subsequent version.</p> |
| title | Survival-Driven Integration: Late Permian Refugia and the Emergence of the Mammal-Defining Physiological Complex |
| topic | Permian therapsid evolution cynodonts physiological integration evolutionary constraints refugia mammalian origins |
| url | https://doi.org/10.5281/zenodo.18001808 |