Table 1: Bryn Cegin and Llandygai I site contexts and radiocarbon dates. The date for the Early Neolithic structure is for the use of the structure as produced by Bayesian analysis of 14 radiocarbon dates expressed at 68% probability (for a detailed discussion see Marshall in Kenney forthcoming). Dates for the pit groups are quoted at 95% confidence limits, and where there are more than two dates for a pit group the earliest and the latest are given. All other dates are at 95% confidence limits. For more details on the Parc Bryn Cegin dates, including laboratory numbers, see the appendix

Site Feature type Context Diagnostic typological association Graig Lwyd lithic/s 14C date cal. BC Reference
Parc Bryn Cegin Pit Group I pitformal deposit Mortlake + early Neolithic plain ware 29 flakes plain
6 flakes polish		 3360-3090 and 3330-2920 Kenney forthcoming
Parc Bryn Cegin Pit Group III pit formal deposit Fengate 5 flakes plain no date Kenney forthcoming
Parc Bryn Cegin Pit Group V pit formal deposit Fengate 1 flake plain 3350-3020 Kenney forthcoming
Parc Bryn Cegin Pit Group VI pit formal deposit Fengate 4 flakes plain 3340-3020 and 3360-3090 Kenney forthcoming
Parc Bryn Cegin Pit Group VIII pit formal deposit Grooved Ware 1 flake polished 1 axe core 2900-2670 and 2880-2580 Kenney forthcoming
Parc Bryn Cegin Timber Structure post-hole/pipe domestic? Early Neo. plain ware 8 flakes plain 2 flakes polish Start 3760-3700, end 3670-3620 Kenney forthcoming
Parc Bryn Cegin Pit 1729 pit casual deposit No assoc. objects 2 flake polish 1 flake plain No date Kenney forthcoming
Parc Bryn Cegin Pit 1647 pit casualdeposit No assoc. objects 18 micro-flakes No date Kenney forthcoming
Llandygai I Henge B pit FB 151 formal deposit petit tranchet flint arrow 7 flake plain 4 flake polish 1 half axe frag. 2880-2570 Lynch and Musson 2001
Llandygai I Henge A sealed surface below bank –– No assoc. objects 1 plain flake 3340-2920 Lynch and Musson 2001
Bryn yr Hen Bobl, Llanidan pre-terrace surface? domestic/formal Mortlake/Fengate 81 flake plain 7 flake polish 3 scrapers No date Hemp 1935, Gresham 1985
Bryn yr Hen Bobl megalith tomb burial no objects no objects 2300-2030 Hemp 1935, Gresham 1985