▁appear ▁to ▁be ▁the ▁earliest ▁type ▁and ▁are ▁often ▁covered ▁with ▁decor ation ▁made ▁from ▁impress ing ▁tw isted ▁cord ▁into ▁the ▁unf ired ▁cl ay . ▁When ▁the ▁decor ation ▁covers ▁the ▁whole ▁vessel ▁they ▁are ▁known ▁as ▁all - over ▁cord ed ▁( A OC ) ▁be akers . ▁Where ▁comb ▁designs ▁are ▁used , ▁perhaps ▁along ▁with ▁cord ▁impress ions ▁they ▁are ▁called ▁all - over ▁orn ament ed ▁( A O O ) ▁be akers . ▁Some ▁have ▁a ▁loop ed ▁handle ▁on ▁one ▁side ▁or ▁a ▁white ▁col oured ▁material ▁pressed ▁into ▁the ▁decor ation , ▁contrast ing ▁with ▁the ▁usual ▁orange ▁or ▁brown ▁cer am ic . ▁ ▁The ▁traditional ▁ar che ological ▁interpretation ▁is ▁that ▁the ▁original , ▁typical ▁bell - be aker ▁shape ▁was ▁replaced ▁by ▁the ▁short - ne ck ed ▁form , ▁which ▁in ▁turn ▁was ▁replaced ▁by ▁long - ne ck ed ▁bell - be akers . ▁However , ▁work ▁by ▁Hum ph rey ▁Case ▁in ▁the ▁ 1 9 9 0 s ▁suggests ▁that ▁all ▁three ▁styles ▁were ▁used ▁contempor ane ously , ▁with ▁different ▁shapes ▁used ▁for ▁different ▁purposes . ▁ ▁See ▁also ▁ ▁Be aker ▁( dr ink ware ) ▁ ▁Be aker ▁( glass ware ) ▁ ▁Be aker ▁culture ▁ ▁Pot tery ▁ ▁S ources ▁ ▁External ▁links ▁▁▁▁ ▁Category : Arch ae ological ▁arte fact ▁types <0x0A> </s> ▁Alex andra ▁St odd ard ▁is ▁an ▁author , ▁interior ▁designer , ▁and ▁l ifest yle ▁phil os