I read it stated that the Coptic Liturgy of Saint Cyril was a translation by Saint Cyril of the original Alexandrian rite in Greek attributed to Saint Mark the Evangelist. Is this true? Or perhaps, even if not by Saint Cyril, is the latter part true?
If so, does that mean that it it constitutes the basic form of the Liturgy for the Coptic church, with Basil and Gregory being anaphoras of it?
Also, do the Ethiopians have an anaphora that is equivalent to the Coptic Cyril?
The tradition of the Coptic Church is that St. Cyril translated St. Marks Liturgy into Coptic from Greek, and formalizes it. Apparently up until that time (5th Century) the Liturgy was still individualized by each Bishop.
In modern usage, all three Liturgies are the same until after the Creed. The structure of St. Cyril's Liturgy differs though, it has more Litanies for example, so one can't really say that St. Basil's and St. Gregory's are simply different Anaphoras.