TABLE 1 in Histovariability and lifestyle in Proterochampsidae Romer, 1966 (Archosauriformes) from the Chañares Formation (Late Triassic), northwestern Argentina

TABLE 1. — General histological features of the studied taxa. Abbreviations: FLB, fibrolamellar bone tissue; LAG, line of arrested growth; LB, lamellar bone tissue; LC, laminar canals; LO, longitudinals canals; PFB, parallel-fibered bone; RC, reticular canals; TB, trabecular bone. SpecimenMatrixVascularizationGrowth marksMarrow cavityFemur Chanaresuchus bonapartei Romer, 1971 PULR-V116PFBLO1 LAGTBTibia Chanaresuchus bonapartei PULR-V116LBLO1 LAGTBFibula Chanaresuchus bonapartei PULR-V116FLBLO>RC>LC3 LAGsTBFemur Tropidosuchus romeri Arcucci, 1990 PVL-4606PFBLC>LO0 LAGsfree