In Camposaurus arizonensis from the Norian of Arizona, USA, widely regarded as the oldest neotheropod[58 ,25 ], the distal fibula is fused to the distal tibia and to the fused astragalocalcaneum.
Source: wiktionary
Astragalocalcaneum
Synonyms for "astragalocalcaneum"
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Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.