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: Muricohedbergella portsdownensis
SELECT DISTINCT nepsample.sample_id, sample_age_ma,hole_id,`paleo_latitude`,`paleo_longitude`, count(DISTINCT nepsample.sample_id) as ocs from nepsample left join `nepsampletaxa` on nepsample.sample_id=nepsampletaxa.sample_id left join neptaxaF on `nepsampletaxa`.`taxon_id` =neptaxaF.`taxon_id` where nepsample.fossil_group='F' AND species_count >5 AND anomaly_score > 0.6 AND taxon_abundance !='0' AND taxon_abundance !='0.' and paleo_latitude is not null and `mtax_name` LIKE :search and sample_age_ma between :agemin and :agemax AND `paleo_latitude` between :latmin and :latmax group by hole_id
age93.90100.50
lat-7060
sMuricohedbergella portsdownensis

Basemap is plate-reconstruction from 98Ma (Cenomanian), 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_1407A342140734.6-15.37200
1171_1050C171105026.53-41.762800
279_5457954526.36-4.61700
379_547A7954726.33-4.328500
4171_1052E171105225.51-39.891100
532_305323051.7-139.924375
662_46362463-10.21-126.77500
789_58589585-16.45-143.27100
836_327A36327-53.54-9.8711100

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
032Luterbacher, H....197532_30540990373.50X3391096.62951.64-139.3781.000Hedbergella portsdownensisMuricohedbergella portsdownensis
132Luterbacher, H....197532_30541990382.50X3391197.40641.58-138.85100.900Hedbergella portsdownensisMuricohedbergella portsdownensis
232Luterbacher, H....197532_30542990391.50X3391298.18331.52-138.3460.833Hedbergella portsdownensisMuricohedbergella portsdownensis
336Sliter, W.V. ...197636_327A14990156.00X3397497.5752-53.54-9.8760.833Hedbergella portsdownensisMuricohedbergella portsdownensis