waa ARCHEOLOGY IN BRITISH GUIANA 109 
ForM: 
Rim: Direct with rounded, flattened or tapered lip; strongly everted, taper- 
ing to rounded lip; rarely, exteriorly thickened with flat sloping upper 
edge. 
Body wall thickness: 3.5-10.0 mm. ; majority 4-6 mm. 
Body diameter: 16-38 cm.; majority 26-32 cm. 
Base: Three base forms occur, but in the absence of complete vessels it is 
impossible to correlate them with particular rim forms, except by strati- 
graphic association (Appendix, table 12). 
A. Flat, unthickened or slightly thickened, joining the side walls at-a 
sharp angle of 30 to 45 degrees; diameter 8-12 cm. (fig. 44, A). 
B. Flat pedestal, 5-12 mm. high, thickened 2-8 mm. more than the 
body wall; diameter 10-12 cm. (fig. 44 B). 
C. Rounded, either thickened or unthickened; basal area about 10-12 
em. in diameter (fig. 44, C). 
Major vessel shapes reconstructed from sherds: 
1. Open bowl with outslanting sides, and most commonly a direct rim 
with rounded lip. Sometimes the rim is slightly thickened or 
tapered. Rim diameter 16-34 cm., majority 24-26 cm. (fig. 44-1; 
pl. 28, d). 
2. Bowls or jars with vertical to incurving sidewalls, direct rim and 
rounded lip; mouth diameter 16—24 cm. (fig. 44-2). 
8. Jars with constricted mouth, sharply everted rim and rounded lip. 
Rim generally no thicker than the body wall, but sometimes slightly 
thickened on the exterior to form a more gentle curve reinforcing 
the junction with the body wall. Rim width 1.0-2.2 em.; thickness 
6-11 mm.; mouth diameter 20-26 cm. The jar body is generally 
globular but a few are carinated (fig. 44-3; pl. 28, a-c, e). 
Less common vessel shapes reconstructed from sherds: 
1. Griddles. Flat, circular, with the rim either direct or slightly 
upturned, lip always rounded. Exterior surface is rough; interior 
well smoothed. Thickness of central portion 1.1-1.5 cm., rim thick- 
ness 1.0-1.8 em. Diameter 36-48 cm. 
2. Globular jars with a constricted mouth, and exteriorly thickened, 
flat-topped to rounded rim with rounded lip. Rim width 1.3-1.5 cm. ; 
mouth diameter 18-28 cm. 
3. Small open bowls with unthickened, everted rim and rounded lip; 
mouth diameter 20-22 em. 
TEMPORAL DIFFERENCE WITHIN THE TYPE: None discernible. Some of the less 
common vessel shapes appear to have a restricted history but the samples are 
too small to be reliable. 
CHRONOLOGICAL POSITION OF THE TYPE: Although there are sporadic early occur- 
rences, this type is most characteristic of the latter part of the Mabaruma 
Phase sequence (fig. 48). 
MABARUMA INCISED 
PASTE AND SURFACE: The majority of the type is on the paste of Mabaruma 
Plain, which is the dominant plain ware during the period of manufacture 
of this decorated pottery; a few appear on the other plain wares typical of 
the Mabaruma Phase. Surfaces are typical of the better finished plain sherds. 
For details of color, temper, firing, surface treatment, etc., see these type 
descriptions. 
