show/hide search details 
======== GET (form) values ========
Array
(
    [SortResultsBy] => DATE_ADDED_DESC
    [SimpleSearch] => 
    [HiddenFilters] => Array
        (
            [0] => FilterByTipTaxa
            [1] => FilterByAge
            [2] => FilterByGeologicalTime
        )

    [BlockedFilters] => Array
        (
            [0] => FilterByTipTaxa
        )

    [TaxonA] => 
    [TaxonB] => 
    [FilterByClade] => Lophotrochozoa
    [MinAge] => 
    [MaxAge] => 
    [FilterByGeologicalTime] => 
)
	
======== $search object ========
Array
(
    [SimpleSearch] => 
    [FilterByTipTaxa] => Array
        (
            [TaxonA] => 
            [TaxonB] => 
        )

    [FilterByClade] => Lophotrochozoa
    [FilterByAge] => Array
        (
            [MinAge] => 
            [MaxAge] => 
        )

    [FilterByGeologicalTime] => 
    [HiddenFilters] => Array
        (
            [0] => FilterByTipTaxa
            [1] => FilterByAge
            [2] => FilterByGeologicalTime
        )

    [BlockedFilters] => Array
        (
            [0] => FilterByTipTaxa
        )

    [SortResultsBy] => DATE_ADDED_DESC
    [ResponseType] => HTML
)

Raising the Standard in Fossil Calibration

The Fossil Calibration Database is a curated collection of well-justified calibrations, including many published in the journal Palaeontologia Electronica. We also promote best practices for justifying fossil calibrations and citing calibrations properly.

CLADE SUBMITTED: Lophotrochozoa
nameToSourceNodeInfo('Lophotrochozoa') return this node_data:
Array ( [taxonid] => 1206795 [source] => NCBI )
nameToMultitreeID('Lophotrochozoa') returns ID:
-1602
QUERY:
SELECT DISTINCT calibration_id FROM calibrations_by_NCBI_clade WHERE clade_root_multitree_id = '-1602' AND calibration_id IN (SELECT CalibrationID FROM calibrations WHERE PublicationStatus = 4)
Adding calibration 188 (inner add-op or non-cladistic search)
Adding calibration 189 (inner add-op or non-cladistic search)
Adding calibration 193 (inner add-op or non-cladistic search)
'Lophotrochozoa':
 displayedRelevance: 1 / 1 = 1.00
'Mollusca':
 displayedRelevance: 1 / 1 = 1.00
'Annelida':
 displayedRelevance: 1 / 1 = 1.00
Clade member 476.5–636.1 Ma Added Sep 19, 2014
Annelida – from Benton et al. 2015
Benton, M.J., Donoghue, P.C.J., Asher, R.A., Friedman, M., Near, T.J., and Vinther, J. 2015. Constraints on the timescale of animal evolutionary history. Palaeontologia Electronica, 18.1.1FC.   more »
Clade member 532–549 Ma Added Sep 19, 2014
Mollusca – from Benton et al. 2015
Benton, M.J., Donoghue, P.C.J., Asher, R.A., Friedman, M., Near, T.J., and Vinther, J. 2015. Constraints on the timescale of animal evolutionary history. Palaeontologia Electronica, 18.1.1FC.   more »
Clade member 550.25–636.1 Ma Added Sep 19, 2014
Lophotrochozoa – from Benton et al. 2015
Benton, M.J., Donoghue, P.C.J., Asher, R.A., Friedman, M., Near, T.J., and Vinther, J. 2015. Constraints on the timescale of animal evolutionary history. Palaeontologia Electronica, 18.1.1FC.   more »
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