The liver is subdivided into sections for the purposes of performing haruspicy ; the sections are inscribed with names of individual Etruscan deities. The Piacenza liver is a striking conceptual parallel to clay models of sheep's livers known from the Ancient Near East, reinforcing the evidence of a connection between the Etruscans and the Anatoliancultural sphere. A Babylonian clay model of a sheep's liver dated to the Middle Bronze Age is preserved in the British Museum. The Piacenza liver parallels the Babylonian artifact by representing the major anatomical features of the liver as sculpted protrusions. The outer rim of the Piacenza liver is divided into 16 sections; since according to the testimony of Pliny and Cicero, the Etruscans divided the heavens into 16 astrological houses, it has been suggested that the liver is supposed to represent a model of the cosmos, and its parts should be identified as constellations or astrological signs. Each of the 16 houses was the "dwelling place" of an individual deity. Seers would e.g. draw conclusions from the direction in which lightning was seen. Lightning in the east was auspicious, lightning in the west inauspicious. Stevens surmises that Tin, the main god of lightning, had his dwelling due north, as lightning in the north-east was most lucky, lightning in the north-west most unlucky, while lightning in the southern half of the compass was not as strong an omen. The deciphering of the complex content of the Liver of Piacenza was the subject of two scientific monographs by the University of Bologna researcher , published between 2017 and 2018. These books represent the most complete analysis of its content and they reveal its nature of a handheld instrument for the digital calculation of a liturgical-ritual calendar. Its dating would be at fourth century BC and the position of place of discovery at 45° of latitude would be consistent with its instrumental use. The theonyms are abbreviated and in many cases, the reading even of the abbreviation is disputed. As a result, there is a consensus for the interpretation of individual names only in a small number of cases. The reading given below is that of Morandi unless otherwise indicated: circumference: interior: Two words are on the bottom side of the artefact: