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: Hornibrookina edwardsii

Basemap is plate-reconstruction from 64Ma (Danian), 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_6059360538.41-49.03700
147_398D4739835.39-8.86700
2173_1069A173106935.27-9.891100
3173_1068A173106835.21-9.7412217
4198_1209C198120918.52-156.36400
586_5778657718.33-157.02900
6198_1210A198121017.96-157.03100
7198_1209A198120917.95-156.46100
8198_1211A198121117.78-157.05200
9198_1210B198121017.58-156.76100
1039_354393542.57-27.87100
1139_35639356-31.62-24.631200
12208_1262C2081262-34.44-9.12100
1373_52473524-37.02-7.591200
14123_765C123765-43108.9200
15123_766A123766-46.1198.86100
16122_762C122762-46.28101.21800
17114_700B114700-54.89-13.34400
18120_747A120747-56.4872.131500
19120_747C120747-56.4972.4400
20113_689B113689-63.82-3.91100
21119_738C119738-64.5278.212200

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
0173Ladner, Bryan ...2001173_1068A1290827.2116063863.549535.20-9.88100.900Hornibrookina edwardsiiHornibrookina edwardsii
1173Ladner, Bryan ...2001173_1068A131121828.11F6064163.848035.19-9.85170.882Hornibrookina edwardsiiHornibrookina edwardsii