show/hide search details
======== GET (form) values ========
Array
(
)
	
======== $search object ========
Array
(
    [SimpleSearch] => 
    [FilterByTipTaxa] => Array
        (
            [TaxonA] => 
            [TaxonB] => 
        )

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

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

    [BlockedFilters] => Array
        (
        )

    [SortResultsBy] => RELEVANCE_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.

SHOWING DEFAULT SEARCH
Adding calibration 340 (inner add-op or non-cladistic search)
Adding calibration 341 (inner add-op or non-cladistic search)
Adding calibration 342 (inner add-op or non-cladistic search)
Adding calibration 343 (inner add-op or non-cladistic search)
Adding calibration 344 (inner add-op or non-cladistic search)
Adding calibration 345 (inner add-op or non-cladistic search)
Adding calibration 346 (inner add-op or non-cladistic search)
Adding calibration 440 (inner add-op or non-cladistic search)
Adding calibration 441 (inner add-op or non-cladistic search)
Adding calibration 442 (inner add-op or non-cladistic search)
'Viperinae':
displayedRelevance: 0 / 1 = 0.00
'Colubridae+Elapoidea':
displayedRelevance: 0 / 1 = 0.00
'Naja':
displayedRelevance: 0 / 1 = 0.00
'Oxyuraninae':
displayedRelevance: 0 / 1 = 0.00
'Bungarus':
displayedRelevance: 0 / 1 = 0.00
'Heterodon + Farancia':
displayedRelevance: 0 / 1 = 0.00
'Pantherophis+Pituophis':
displayedRelevance: 0 / 1 = 0.00
'Blaberidae':
displayedRelevance: 0 / 1 = 0.00
'Cariblattoides + Cariblatta':
displayedRelevance: 0 / 1 = 0.00
'Ectobius':
displayedRelevance: 0 / 1 = 0.00
				
No clear relationship > 48.14 Ma Added Sep 11, 2017
Ectobius – from Evangelista et al. 2017
Evangelista, D.A., Djernæs, A., and Kohli, M.K. 2017. Fossil calibrations for the cockroach phylogeny (Insecta, Dictyoptera, Blattodea), comments on the use of wings for their identification, and a redescription of the oldest Blaberidae. Palaeontologia Electronica, 20.3.1FC.   more »
				
No clear relationship > 48.14 Ma Added Sep 08, 2017
Cariblattoides + Cariblatta – from Evangelista et al. 2017
Evangelista, D.A., Djernæs, A., and Kohli, M.K. 2017. Fossil calibrations for the cockroach phylogeny (Insecta, Dictyoptera, Blattodea), comments on the use of wings for their identification, and a redescription of the oldest Blaberidae. Palaeontologia Electronica, 20.3.1FC.   more »
				
No clear relationship > 52 Ma Added Sep 08, 2017
Blaberidae – from Evangelista et al. 2017
Evangelista, D.A., Djernæs, A., and Kohli, M.K. 2017. Fossil calibrations for the cockroach phylogeny (Insecta, Dictyoptera, Blattodea), comments on the use of wings for their identification, and a redescription of the oldest Blaberidae. Palaeontologia Electronica, 20.3.1FC.   more »
				
No clear relationship > 11.93 Ma Added Jun 21, 2016
Pantherophis+Pituophis – from Head et al. 2016
Head, J.J., K. Mahlow, and J. Müller. 2016. Fossil calibration dates for molecular phylogenetic analysis of snakes 2: Caenophidia, Colubroidea, Elapoidea, Colubridae. Palaeontologia Electronica, 19.2.2FC   more »
				
No clear relationship > 12.08 Ma Added Jun 21, 2016
Heterodon + Farancia – from Head et al. 2016
Head, J.J., K. Mahlow, and J. Müller. 2016. Fossil calibration dates for molecular phylogenetic analysis of snakes 2: Caenophidia, Colubroidea, Elapoidea, Colubridae. Palaeontologia Electronica, 19.2.2FC   more »
				
No clear relationship > 10.215 Ma Added Jun 21, 2016
Bungarus – from Head et al. 2016
Head, J.J., K. Mahlow, and J. Müller. 2016. Fossil calibration dates for molecular phylogenetic analysis of snakes 2: Caenophidia, Colubroidea, Elapoidea, Colubridae. Palaeontologia Electronica, 19.2.2FC   more »
				
No clear relationship > 10 Ma Added Jun 21, 2016
Oxyuraninae – from Head et al. 2016
Head, J.J., K. Mahlow, and J. Müller. 2016. Fossil calibration dates for molecular phylogenetic analysis of snakes 2: Caenophidia, Colubroidea, Elapoidea, Colubridae. Palaeontologia Electronica, 19.2.2FC   more »
				
No clear relationship > 17 Ma Added Jun 21, 2016
Naja – from Head et al. 2016
Head, J.J., K. Mahlow, and J. Müller. 2016. Fossil calibration dates for molecular phylogenetic analysis of snakes 2: Caenophidia, Colubroidea, Elapoidea, Colubridae. Palaeontologia Electronica, 19.2.2FC   more »
				
No clear relationship > 30.8 Ma Added Jun 21, 2016
Colubridae+Elapoidea – from Head et al. 2016
Head, J.J., K. Mahlow, and J. Müller. 2016. Fossil calibration dates for molecular phylogenetic analysis of snakes 2: Caenophidia, Colubroidea, Elapoidea, Colubridae. Palaeontologia Electronica, 19.2.2FC   more »
				
No clear relationship 20–23.8 Ma Added Jun 21, 2016
Viperinae – from Head et al. 2016
Head, J.J., K. Mahlow, and J. Müller. 2016. Fossil calibration dates for molecular phylogenetic analysis of snakes 2: Caenophidia, Colubroidea, Elapoidea, Colubridae. Palaeontologia Electronica, 19.2.2FC   more »
login