Mexicana (n. s.), 25(2): 375-382. RESUMEN. Se analizó el patrón de escutelación post-occipital y nucal de 111 cocodrilos (Crocodylus acutus) en La Ventanilla, Oaxaca. Se obtuvieron 33 patrones de escutelación diferentes. El patrón más frecuente observado (31.5%) fue la presencia de 4 escudos post-occipitales, la ausencia de 2 escudos nucales anteriores externos y la presencia de 2 escudos nucales posteriores (4-2EE-2) y en menor proporción (6.31%) se registró el arreglo considerado típico para la especie. Se observó una diferencia significativa entre las frecuencias de patrones más comunes encontrados en este trabajo y de la misma manera se realizó la comparación del patrón de escutelación más frecuente registrado en este estudio con respecto a otros reportes para C. acutus. Palabras clave: Crocodylus acutus, patrón de escutelación, morfología, osteodermos. from La Ventanilla, Oaxaca were analyzed. Thirty three different scutellation patterns were found. The most frequently observed pattern (31.5%) was 4 post-occipital scales present 2 external previous nucal scales absent, and 2 posterior nucal scales present (4-2EE-2). The pattern considered typical for this species was observed only in 6.31% of individuals. There were differences between the frequency distribution of common patterns when compared to other studies on C. acutus. García-Grajales
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