Abydenus was a Greek

Ancient Greece

Ancient Greece is a civilization belonging to a period of Greek history that lasted from the Archaic period of the 8th to 6th centuries BC to the end of antiquity. Immediately following this period was the beginning of the Early Middle Ages and the Byzantine era. Included in Ancient Greece is the...

 historian

Historian

A historian is a person who studies and writes about the past and is regarded as an authority on it. Historians are concerned with the continuous, methodical narrative and research of past events as relating to the human race; as well as the study of all history in time. If the individual is...

, and the author of a History of the Chaldeans and Assyrians, of which some fragments are preserved by Eusebius in his Praeparatio Evangelica, and by Cyril of Alexandria

Cyril of Alexandria

Cyril of Alexandria was the Patriarch of Alexandria from 412 to 444. He came to power when the city was at its height of influence and power within the Roman Empire. Cyril wrote extensively and was a leading protagonist in the Christological controversies of the later 4th and 5th centuries...

 in his work against Julian

Julian

Julian is a common male given name in Britain, United States, Ireland, Germany, Poland, the Netherlands, France , Spain, Latin America and elsewhere....

. Several other fragments are preserved by Syncellus

Syncellus

Syncellus may refer to:* an office in an Orthodox Church roughly equivalent to that of an episcopal vicar in the Roman Catholic Church.People named Syncellus:* George Syncellus...

. These were particularly valuable for chronology. An important fragment, which clears up some difficulties in Assyrian history, has been discovered in the Armenian translation of the Chronicon

Chronicon (Eusebius)

The Chronicon or Chronicle was a work in two books by Eusebius of Caesarea. It seems to have been compiled in the early 4th century. It contained a world chronicle from Abraham until the vicennalia of Constantine I in 325 AD...

of Eusebius.

It is uncertain when he lived, but he is to be distinguished from Palaephatus Abydenus

Palaephatus

Palaephatus was the original author of a rationalizing text on Greek mythology, the work of paradoxography On Incredible Tales , which survives in a Byzantine edition....

, who lived in the time of Alexander the Great; for this Abydenus mentions Berosus

Berosus

Berosus may refer to:*In Greek mythology:**Berosus, father of Tanais by Lysippe **Berosus, father of the Sibyl Sabbe by Erymanthe*Berossus , Hellenistic-era Babylonian writer and astronomer...

, who lived at a later period. He probably wrote around 200 BC

200 BC

Year 200 BC was a year of the pre-Julian Roman calendar. At the time it was known as the Year of the Consulship of Maximus and Cotta...

 and, as Cyril states, in the Ionic dialect

Ionic Greek

Ionic Greek was a subdialect of the Attic–Ionic dialect group of Ancient Greek .-History:Ionic dialect appears to have spread originally from the Greek mainland across the Aegean at the time of the Dorian invasions, around the 11th Century B.C.By the end of the Greek Dark Ages in the 5th Century...

.