Biogeography - mapping of Neptune Occurrences

Alternatives - space-time plot ::Range chart plot
Fossil Group: Taxon to plot:
Age min: Age max:
Species threshold: Age anomaly threshold:
Taxon plotted: Quadrum bengalensis

Basemap is plate-reconstruction from 68Ma (Maastrichtian), produced using GPlates2.1. Flat blue colour indicates subducted ocean crust, and so areas from which fossil assemblages cannot be recovered.
The palaeolatitudes and longitudes of the sites were calculated separately and there are some discrepancies.
Symbols - all sites with samples in the time interval are plotted as circles, the opacity of the red fill is proportional to % of samples with the taxon. Hover over symbol for caption.

List of sites with samples in the age/latitude bin.
samples - number of samples at the site in the age interval; ocs - number of these samples with the taxon; %freq = ocs/samples*100.
List is sorted by paleolatitude:
nhole leg site p_lat p_long samples ocs %freq
0342_1407A342140737.09-26.09200
147_398D4739835.32-8.69100
2173_1069A173106935.2-9.212500
3173_1068A173106835.14-9.144600
444_390A4439030.78-53.78500
5160_967E16096722.0630.112100
6198_1212A198121216.9-156.51100
7198_1209A198120916.84-154.481500
8198_1212B198121216.77-155.042115
9198_1210A198121016.64-154.7120210
10198_1211A198121116.38-154.671500
11198_1209C198120915.93-153.922400
12198_1210B198121015.44-154.232314
13129_801B1298011.72-158.58100
1417_171171710.92-126.461000
15130_807C130807-11.6-161.06500
1639_35639356-31.6-22.82300
1739_35739357-33.35-17.041200
18208_1267A2081267-35.43-9.45200
19208_1267B2081267-35.43-9.45200
2073_52473524-37.1-7.842900
21123_766A123766-45.8898.43200
22122_762C122762-46.11100.872400
2336_327A36327-54.09-29.972000

The table below lists all occurrence records that meet the search criteria.
The Leg entries are linked to the contents pages for the DSDP/ODP scientific results volume for the Leg. This is the most likely source of the data, except for the most recent legs where resuts may have been published in regular scientific journals - see also source ref.
ab - abundance of the taxon inthe sample; p-lat & p-long - paleolatitude and paleolongitude
N species - number of speices in sample; anomaly score - proportion of taxa which are within range.
nLeg source ref Hole core section cm depth ab sample age p-lat p-long flag N species anomaly score original_id taxon
0198Lees, Jackie A;...2005198_1210A24450219.90R4533266.045616.63-156.09700.971Quadrum bengalensisQuadrum bengalensis
1198Lees, Jackie A;...2005198_1210A246105223.15R4533666.478716.39-155.93320.969Quadrum bengalensisQuadrum bengalensis
2198Lees, Jackie A;...2005198_1210B24145218.65R4537668.224215.44-155.17570.982Quadrum bengalensisQuadrum bengalensis
3198Lees, Jackie A;...2005198_1212B119120101.90R5218566.334416.77-156.42291.000Quadrum bengalensisQuadrum bengalensis