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: Zeugrhabdotus fissus
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 neptaxaN on `nepsampletaxa`.`taxon_id` =neptaxaN.`taxon_id` where nepsample.fossil_group='N' 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
age133.88163.47
lat-7060
sZeugrhabdotus fissus

Basemap is plate-reconstruction from 148Ma (Tithonian), 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
041_3704137018.491.322200
176_534A7653414.05-23.3915900
241_367413676.14-18.31400
3198_1214A19812143.39-117.39300
4198_1213B19812133.13-117.621300
5129_801B129801-6.52-117.39100
6123_766A123766-40.9288.022200
7123_765C123765-40.9798.031500

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