SOMMARIO: 1. Premessa - 2. La realtà ecclesiale e i riti - 3. La Chiesa armena gregoriana - 4. la Chiesa copta d’Egitto - 5.La Chiesa etiope e la Chiesa eritrea - 6- La Chiesa siro-giacobita - 7. La Chiesa siriaca orientale o malankarese - 8. La Chiesa assiro-orientale o caldea.

The Ancient Oriental Churches and their conformity to the calcedonese faith

ABSTRACT: Historical and doctrinal genesis of the non-chalcedon Churches and their current consistency. The recent clarification about the Christology of many of these Churches, especially in documents common with the Catholic Church.