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: Broinsonia cenomanica

Basemap is plate-reconstruction from 104Ma (Albian), 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
079_5457954526.361.14600
179_547A7954726.33-1.797000
241_3704137025.88-1.461200
344_390A4439022.48-31.75100
477_5377753721.34-50.54100
541_367413679.39-19.481100
6198_1207B19812076.8-125.822100
7198_1212B19812121.81-136.23800
8198_1214A19812141.39-130.812100
9198_1213A19812131.36-133.261318
10198_1213B19812130.17-130.91300
11129_800A129800-7.16-137.361000
1262_46362463-10.49-118.081200
13123_765C123765-40.52104.651600
14123_766A123766-42.0394.43600
15122_762C122762-42.8896.481500
16122_763B122763-43.0296.159300
1736_327A36327-53.44-3.352300
1871_51171511-53.73-3.312900
1926_25826258-55.7187.92700

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
0198Bown, Paul R (...2005198_1213A119095.14?1-252252100.79080.99-137.14371.000Broinsonia cenomanicaBroinsonia cenomanica