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Comparative Archaeology Database, University of Pittsburgh
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Las Vegas Fauna Dataset |
The files MOLLUSKS.TXT and MOLLUSKS.XLS provide the MNI of each specie within each excavated context at the various Vegas sites. MOLLUSKS.TXT is a comma delimited ASCII text file; MOLLUSKS.XLS contains the same data in the form of an Excel spreadsheet. Each line in the ASCII file represents one excavation context. There are 353 lines, each with 135 variables separated by commas. The variables are listed in the following order:
| 1 | Site number |
| 2 | Unit number (new context number). See the following PDF for a reconciliation of trench locations to new context numbers. For the location of the original context designations, please refer to Figure 1.5 of the publication associated with this dataset. |
| 3 | Chalkiness 0 = not chalky 1 = chalky 2 = very chalky blank = not recorded |
| 4 | Number of Pieces (Including Discarded Anadara) |
| 5 | Fragmentation Index: (% fragments) * 1/(average fragment weight)
(Includes only unidentified and Anadara tuberculosa fragments.) |
| 6 | Total MNI |
| 7 | Total MNI (Including Discarded Anadara) |
| 8 | Weight (g) |
| 9 | Estimated total Weight (g) (Including Discarded Anadara) |
| 10 | Number of pieces of unidentified fragments |
| 11 | Percentage total pieces of unidentified fragments |
| 12 | Weight (g) of unidentified fragments |
| 13 | Percentage total weight (g) of unidentified fragments. |
| 14 | Number of pieces of Anadara tuberculosa (fragments) --For the purposes of estimating the number of Anadara tuberculosa represented by fragments, an average Anadara shell is estimated to weigh 70 g (each valve 35 g). But these numbers are not included in the estimated MNI in variable 27. |
| 15 | Percentage total pieces of Anadara tuberculosa (fragments) |
| 16 | Weight (g) of Anadara tuberculosa (fragments) |
| 17 | Percentage total Weight of Anadara tuberculosa (fragments) |
| 18 | Estimated number of individuals of Anadara tuberculosa (fragments) |
| 19 | Counted right valves of Anadara tuberculosa |
| 20 | Counted left valves of Anadara tuberculosa |
| 21 | Valve MNI of Anadara tuberculosa |
| 22 | Weight of counted valves of Anadara tuberculosa |
| 23 | Number of discarded valves of Anadara tuberculosa |
| 24 | Estimated weight (g) of Anadara tuberculosa |
| 25 | Weight of all Anadara tuberculosa fragments and valves |
| 26 | Percent total weight (g) all Anadara tuberculosa fragments and valves |
| 27 | Estimated MNI of all Anadara tuberculosa fragments and valves |
Please refer to the invertebrate taxa code list for the specie associated with each code listed below.
| 28 | MNI of Arcidae (anafor) |
| 29 | MNI of Arcidae (anagra) |
| 30 | MNI of Arcidae (anaper) |
| 31 | MNI of Arcidae (trapro) |
| 32 | MNI of Arcidae (anasim) |
| 33 | MNI of Arcidae (arcpac) |
| 34 | MNI of Cardiidae (trapro) |
| 35 | MNI of Cardiidae (trasp) |
| 36 | MNI of Cardiidae (carsp) |
| 37 | MNI of Cardiidae (crdaff) |
| 38 | MNI of Carditidae (crdaff) |
| 39 | MNI of Carditidae (crdsp) |
| 40 | MNI of Chamidae (chasp) |
| 41 | MNI of Chamidae (psesp.) |
| 42 | MNI of Chamidae (chmsp) |
| 43 | MNI of Glycymerididae (glystr) |
| 44 | MNI of Hiatellidae (hiasol) |
| 45 | MNI of Mactridae (macsp) |
| 46 | MNI of Mactridae (mctsp) |
| 47 | MNI of Mytellidae (modsp) |
| 48 | MNI of Mytellidae (mytsp) |
| 49 | MNI of Ostreidae (cracol) |
| 50 | MNI of Ostreidae (crapal) |
| 51 | MNI of Ostreidae (crasp.) |
| 52 | MNI of Pectinidae (argcir) |
| 53 | MNI of Pectinidae (lyrsub) |
| 54 | MNI of Pectinidae (lyrsp) |
| 55 | MNI of Pectinidae (pecsp) |
| 56 | MNI of Pinnidae (pinsp) |
| 57 | MNI of Pteriidae (pinmaz) |
| 58 | MNI of Pteriidae (pteste) |
| 59 | MNI of Solecurtidae (tagper) |
| 60 | MNI of Solecurtidae (tagsp) |
| 61 | MNI of Spondylidae (sposp.) |
| 62 | MNI of Tellinidae (telsp) |
| 63 | MNI of Tellinidae (tldsp) |
| 64 | MNI of Veneridae (chisub) |
| 65 | MNI of Veneridae (dosdun) |
| 66 | MNI of Veneridae (megaur) |
| 67 | MNI of Veneridae (megsp) |
| 68 | MNI of Veneridae (permul) |
| 69 | MNI of Veneridae (pitsp) |
| 70 | MNI of Veneridae (proasp) |
| 71 | MNI of Veneridae (proecu.) |
| 72 | MNI of Veneridae (prosp) |
| 73 | MNI of Veneridae (vensp) |
| 74 | MNI of Unidentified unbivalve |
| 75 | MNI of Ampullariidae (pomsp) |
| 76 | MNI of Buccinidae (cangem) |
| 77 | MNI of Buccinidae (canele) |
| 78 | MNI of Buccinidae (cansp) |
| 79 | MNI of Buccinidae (tridis) |
| 80 | MNI of Bulimulidae (bulsp1) |
| 81 | MNI of Bulimulidae (bulsp2.) |
| 82 | MNI of Calyptraeidae (creacu) |
| 83 | MNI of Calyptraeidae (cremar) |
| 84 | MNI of Calyptraeidae (cresp) |
| 85 | MNI of Calyptraeidae (cruspi) |
| 86 | MNI of Cerithiidae (crtsp) |
| 87 | MNI of Columbellidae (colsp) |
| 88 | MNI of Conidae (consp) |
| 89 | MNI of Cypraeidae (cypsp) |
| 90 | MNI of Fasciolariidae (plepri) |
| 91 | MNI of Fasciolariidae (fassp.) |
| 92 | MNI of Ficidae (ficven) |
| 93 | MNI of Fissurellidae (fisvir) |
| 94 | MNI of Fissurellidae (fissp) |
| 95 | MNI of Lottiidae (lotsp) |
| 96 | MNI of Lymnaeidae (lymsp) |
| 97 | MNI of Melongenidae (melpat) |
| 98 | MNI of Muricidae (hexbra) |
| 99 | MNI of Muricidae (murrad) |
| 100 | MNI of Muricidae (mursp) |
| 101 | MNI of Nassariidae (naslut.) |
| 102 | MNI of Nassariidae (nassp) |
| 103 | MNI of Naticidae (natsp) |
| 104 | MNI of Olividae (olisem) |
| 105 | MNI of Olividae (oliund) |
| 106 | MNI of Olividae (olivol) |
| 107 | MNI of Orthalicidae (porios) |
| 108 | MNI of Ovulidae (jenpus) |
| 109 | MNI of Potamididae (cerval) |
| 110 | MNI of Potamididae (cersp) |
| 111 | MNI of Potamididae (rhihum.) |
| 112 | MNI of Rannellidae (cymsp) |
| 113 | MNI of Strombidae (strsp) |
| 114 | MNI of Tonnidae (malrin) |
| 115 | MNI of Thaididae (thabis) |
| 116 | MNI of Thaididae (thakio) |
| 117 | MNI of Thaididae (thamel) |
| 118 | MNI of Thaididae (thasp) |
| 119 | MNI of Thaididae (thdsp) |
| 120 | MNI of Trochidae (tegpic) |
| 121 | MNI of Trochidae (tegsp.) |
| 122 | MNI of Turbinidae (astbus) |
| 123 | MNI of Turbinidae (astsp) |
| 124 | MNI of Turbinidae (turmag) |
| 125 | MNI of Turbinidae (tursax) |
| 126 | MNI of Turbinidae (tursp) |
| 127 | MNI of Turritellidae (trtsp) |
| 128 | MNI of Vermetidae (sersp) |
| 129 | MNI of Unidentified (ungas) |
| 130 | MNI of Chitonidae (chtsto) |
| 131 | MNI of Arthropoda (unbra.) |
| 132 | MNI of Arthropoda (balsp) |
| 133 | MNI of Cnidaria (cnisp) |
| 134 | MNI of Echinodermata (encsp) |
| 135 | MNI of Echinodermata (echsp) |
The first line of the ASCII text file, for example, looks like this:
38,38-4000,,463,0.0095,38,139,1858.9,8928.9,146,31.53,297.2,3.33,52,11.23,105.8,1.18,2,19,25,25,970,202,7070.0,8145.8
,91.23,126,,1,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,6,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,1,,,,,,,,,,,,,,,,,,,,,,,,,,,,5,,,,,,,,,,
This means that the site number is 38, the unit (context) number is 38-4000, which had 463 total pieces of shell. The fragmentation index for the unit is 0.0095. The total MNI of the unit is 38, but it is 139 if we include the discarded Anandara shells. The total weight of all the mollusks within the unit is 1858.9 g. There are 146 pieces of unidentified fragments, which are 31.53% of the total pieces. Their weight is 297.2 g, which is 3.33% of the total weight. There are 52 pieces of Anandara tuberculosa, which are 11.23% of the total pieces. Their weight is 105.8 g, which is 1.18% of the total weight. The estimated number of individuals of Anadara tuberculosa fragments is 2. There are 19 right valves and 25 left valves of Anadara tuberculosa. Their combined MNI is 25 and their weight is 970 g. 202 of the Anadara tuberculosa valves were discarded, with an estimated weight of 7070.0 g. The total weight of all Anadara tuberculosa fragments and valves is 8145.8 g, which constitutes 91.23% of the total weight, and an estimated MNI of 126. The unit also has 1 MNI of Arcidae (anagra), 6 MNI of Veneridae (megaur), 1 MNI of Melongenidae (melpat), and 5 MNI of Turbinidae (tursax).
The last, or 353rd line of the ASCII text file is:
203,203-600,2,159,0.0199,40,40,1140.1,1140.1,9,5.66,28.0,2.46,51,32.08,112.1,9.83,2,37,34,37,884.5,0,0.0,996.6,87.41,37
,,,,,,,,,,,,,,,,,,,,,,,,1,1,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,1,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,
This means that the site number is 203, the unit (context) number is 203-600, which had 152 total pieces of shell. The unit context is very chalky. The fragmentation index for the unit is 0.0199. The total MNI of the unit is 40, it is also 40 if we include the discarded Anandara shells. The total weight of all the mollusks within the unit is 1140.1 g. There are 9 pieces of unidentified fragments, which are 5.66% of the total pieces. Their weight is 28.0 g, which is 2.46% of the total weight. There are 51 pieces of Anandara tuberculosa, which are 32.08% of the total pieces. Their weight is 112.1 g, which is 9.83% of the total weight. The estimated number of individuals of Anadara tuberculosa fragments is 2. There are 37 right valves and 34 left valves of Anadara tuberculosa. Their combined MNI is 37 and their weight is 884.5 g. The total weight of all Anadara tuberculosa fragments and valves is 996.6 g, which constitutes 87.41% of the total weight, and an estimated MNI of 37. The unit also has 1 MNI of Ostreidae (crasp), 1 MNI of Pectinidae (arcclr), and 1 MNI of Cypraeidae (cypsp).
Download the file MOLLUSKS.TXT (80 KB) or the file MOLLUSKS.XLS (303 KB).
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