(7500 BC), centered on the site of Jarmo (Qal'at Jarmo) is a prehistoric archeological site located in modern Iraq on the foothills of the Zagros Mountains. Excavations revealed that Jarmo was an agricultural community, dating back to 7500 BC, based on irrigation through natural rainfall. It preceded the human expansion towards the alluvial plains of central Mesopotamia. It was broadly contemporary with such other important Neolithic sites such as Jericho in the southern Levant, Çatalhöyük in Anatolia or Tell Sabi Abyad in northern Syria. Some fragments of stone vessels and alabaster jars have also been found in Jarmo, dating to circa 7500 BC, before the c.7000 BC invention of pottery. First experiments with pottery (circa 7000 BC) The northern Mesopotamian sites of Tell Hassuna and Jarmo are some of the oldest sites in the Near-East where pottery has been found, appearing in the most recent levels of excavation, which dates it to the 7th millennium BC. This pottery is handmade, of simple design and with thick sides, and treated with a vegetable solvent. There are clay figures, zoomorphic or anthropomorphic, including figures of pregnant women which are taken to be fertility goddesses, similar to the Mother Goddess of later Neolithic cultures in the same region. Halaf culture (6000–5000 BC, Northwestern Mesopotamia) Pottery was decorated with abstract geometric patterns and ornaments, especially in the Halaf culture, also known for its clay fertility figurines, painted with lines. Clay was all around and the main material; often modelled figures were painted with black decoration. Carefully crafted and dyed pots, especially jugs and bowls, were traded. As dyes, iron oxide containing clays were diluted in different degrees or various minerals were mixed to produce different colours. The Halaf culture saw the earliest known appearance of stamp seals. They featured essentially geometric patterns. Female fertility figurines in painted clay, possibly goddesses, also appear in this period, circa 6000–5100 BC. Hassuna culture (6000–5000 BC, Northern Mesopotamia) The Hassuna culture is a Neolithic archaeological culture in northern Mesopotamia dating to the early sixth millennium BC. It is named after the type site of Tell Hassuna in Iraq. Other sites where Hassuna material has been found include Tell Shemshara. The decoration of pottery essentially consists in geometrical shapes, and a few ibex designs. Samarra culture (6000–4800 BC, Central Mesopotamia) The Samarra culture is a Chalcolithic archaeological culture in northern Mesopotamia that is roughly dated to 5500–4800 BCE. It