Biogeography - mapping of Neptune Occurrences

Alternatives - space-time plot ::Range chart plot
Fossil Group: Taxon to plot:
Age min: Age max: Lat max/N: Lat min/S:
Species threshold: Age anomaly threshold:
Taxon plotted: Discoaster backmanii

Basemap is plate-reconstruction from 58Ma (Thanetian), 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
093_6059360537.87-52.011200
1342_1408A342140836.93-30.083267
2342_1407A342140736.91-30.18300
3342_1409A342140936.68-29.77600
4342_1406A342140636.14-31.945240
547_398D4739835.56-10.22900
6173_1069A173106935.39-11.561100
7173_1068A173106835.34-11.22300
877_5407754025.12-67.15100
9198_1209C198120921.52-159.83700
1086_5778657721.4-160.641100
11198_1209A198120921.27-160.64300
12198_1210A198121021.21-160.14300
13198_1211A198121120.93-160.48300
14198_1211C198121120.86-161.06400
15198_1210B198121020.82-160.1600
16207_1260B20712605.4-40.525700
1739_354393542.21-29.95800
18159_961A159961-3.26-8.32600
1922_21722217-26.0976.27200
2040_36340363-27.750.76600
2139_35639356-31.8-26.011100
22208_1262A2081262-34.22-8.25100
23208_1262B2081262-34.29-8.56100
24208_1267A2081267-35.14-8.28200
25208_1266B2081266-35.67-7.7400
26208_1266A2081266-35.69-7.78200
27208_1266C2081266-35.72-7.9200
2873_52473524-36.74-6.581500
29123_765C123765-40.76106.67100
30123_766A123766-43.5397.7800
31122_762C122762-43.5599.963000
32114_700B114700-54.89-13.68500
33120_748C120748-58.2375.35900
34113_689B113689-64.36-0.11700
35113_690B113690-64.97-1.972700

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
0342Norris, R.D., W...2014342_1406A32475265.90R6429957.383036.03-32.60131.000Discoaster backmaniiDiscoaster backmanii
1342Norris, R.D., W...2014342_1406A3290266.21F6430057.419136.03-32.57120.917Discoaster backmaniiDiscoaster backmanii
2342Norris, R.D., W...2014342_1408A27679245.19R6472457.512936.86-30.54151.000Discoaster backmaniiDiscoaster backmanii
3342Norris, R.D., W...2014342_1408A2790246.64R6472558.149536.93-30.08140.929Discoaster backmaniiDiscoaster backmanii