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Comparative Archaeology Database, University of Pittsburgh
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Pedregal Dataset |
The data files SHELL.TXT and SHELL.XLS provide the number of specimens of different shellfish species for each context and bag within the Pedregal site. SHELL.TXT is an ASCII text file, and SHELL.XLS contains the same data in the form of an Excel spreadsheet. Each line represents one bag. There are 813 lines in the text file, each with 25 variables separated by commas. The variables are, in the following order:
1 |
Context |
2 |
Bag number |
3 |
Number of Prisogaster niger specimens |
4 |
Number of Polinices uber specimens |
5 |
Number of Thais chocolata specimens |
6 |
Number of Thais haemastoma specimens |
7 |
Number of Xanthochorus buxea specimens |
8 |
Number of Nassarius dentifer specimens |
9 |
Number of Tegula atra specimens |
10 |
Number of Scutalus proteus specimens |
11 |
Number of Xanthochorus broderipii specimens |
12 |
Number of Sinum cymba specimens |
13 |
Number of Donax obesulus specimens |
14 |
Number of Choromytilus chorus specimens |
15 |
Number of Protothaca thaca specimens |
16 |
Number of Argopecten pupuratum specimens |
17 |
Number of Aulacomya ater specimens |
18 |
Number of Semimytilus algosus specimens |
19 |
Number of Perumytilus purpuratus specimens |
20 |
Number of Semele corrugata specimens |
21 |
Number of Mitra orientalis specimens |
22 |
Number of Olivella columellaris specimens |
23 |
Number of Fissurella maxima specimens |
24 |
Number of Balanus sp. specimens |
25 |
Number of Platyxanthus orbignyi specimens |
The first line of the ASCII text file, for example, looks like this:
2,40,1,10,1,1,1,1,1,0,0,0,2,0,0,0,0,0,0,0,0,0,0,0,0
This indicates that the specimens come from context 2, bag 40, which contained 1 Prisogaster niger, 10 Polinices uber, 1 Thais chocolata, 1 Thais haemastoma, 1 Xanthochorus buxea, 1 Nassarius dentifer, 1 Tegula atra, and 2 Donax obesulus specimens.
The last, or 813th, line of the ASCII text file is:
669,2765,1,0,0,1,0,0,0,1,0,0,0,1,0,0,0,0,0,0,0,0,0,0,1
This indicates that the specimens come from context 669, bag 2765, which contained 1 Prisogaster niger, 1 Thais haemastoma, 1 Scutalus proteus, 1 Choromytilus chorus, and 1 Platyxanthus orbignyi specimens.
Download the file SHELL.TXT (45 KB) or the file SHELL.XLS (184 KB).