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 eptabrachium

Basemap is plate-reconstruction from 88Ma (Coniacian), 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
0160_967E16096720.3131.85900
1198_1207B19812078.94-136.191000
2198_1213A19812133.79-143.52800
3198_1212B19812123.68-142.15200
4129_800A129800-4.12-148.54600
5129_801B129801-8.08-148.23100
617_17117171-10.34-114.481600
7123_765C123765-41.22104.63400
8123_766A123766-42.8294.47700
9122_762C122762-43.3896.73200
10122_763B122763-44.0296.351900
1171_51171511-53.9-12.481200
1236_327A36327-54.08-17.23700
1326_25826258-56.2989.182900
1426_258A26258-56.5889300

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