show/hide search details
Pantherophis+Pituophis
– from Head et al. 2016
Heterodon + Farancia
– from Head et al. 2016
Bungarus
– from Head et al. 2016
Oxyuraninae
– from Head et al. 2016
Naja
– from Head et al. 2016
Colubridae+Elapoidea
– from Head et al. 2016
Viperinae
– from Head et al. 2016
Acrochordus javanicus
– from Head et al. 2016
Pan-Colubroidea
– from Head et al. 2016
Pan-Caenophidia
– from Head et al. 2016
Morelia
– from Head, 2015
Loxocemidae
– from Head, 2015
Charininae
– from Head, 2015
Charinidae
– from Head, 2015
Eunectes
– from Head, 2015
Boinae
– from Head, 2015
Aniliidae
– from Head, 2015
Serpentes
– from Head, 2015
Phalacrocoracidae
– from Smith and Ksepka, 2015
Fregatidae
– from Smith and Ksepka, 2015
Pelecanidae
– from Smith and Ksepka, 2015
Threskiornithidae
– from Smith and Ksepka, 2015
Phaethontes
– from Smith and Ksepka, 2015
Upupiformes
– from Ksepka and Clarke, 2015
Psittaciformes
– from Ksepka and Clarke, 2015
Coliiformes
– from Ksepka and Clarke, 2015
Apodidae
– from Ksepka and Clarke, 2015
Coracioidea
– from Ksepka and Clarke, 2015
Testudines
– from Joyce et al. 2013
Palaeognathae
– from Benton et al. 2015
Neoaves
– from Benton et al. 2015
Neognathae
– from Benton et al. 2015
Neornithes
– from Benton et al. 2015
Squamata
– from Benton et al. 2015
Lepidosauria
– from Benton et al. 2015
Archosauria
– from Benton et al. 2015
Diapsida
– from Benton et al. 2015
Reptilia
– from Benton et al. 2015
Uria - Alle
– from Smith, 2015
Brachyramphus marmoratus - B. brevirostris
– from Smith, 2015
Laromorphae
– from Smith, 2015
Turnicidae
– from Smith, 2015
Calidridinae
– from Smith, 2015
Jacanidae
– from Smith, 2015
Burhinidae
– from Smith, 2015
Charadriiformes
– from Smith, 2015
Alca torda
– from Smith, 2015
Uria
– from Smith, 2015
Synthliboramphus craveri - S. hypoleucus
– from Smith, 2015
Cepphus carbo - other Cepphus
– from Smith, 2015
Alcidae
– from Smith, 2015
Fraterculinae
– from Smith, 2015
Fratecula arctica
– from Smith, 2015
Charadrii
– from Smith, 2015
Anatoidea (Anatidae - Anseranatidae)
– from Ksepka and Clarke, 2015
Sphenisciformes
– from Ksepka and Clarke, 2015
======== GET (form) values ======== Array ( [SortResultsBy] => DATE_ADDED_DESC [SimpleSearch] => [HiddenFilters] => Array ( [0] => FilterByTipTaxa [1] => FilterByAge [2] => FilterByGeologicalTime ) [BlockedFilters] => Array ( [0] => FilterByTipTaxa ) [TaxonA] => [TaxonB] => [FilterByClade] => Sauropsida [MinAge] => [MaxAge] => [FilterByGeologicalTime] => )
======== $search object ======== Array ( [SimpleSearch] => [FilterByTipTaxa] => Array ( [TaxonA] => [TaxonB] => ) [FilterByClade] => Sauropsida [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: Sauropsida
nameToSourceNodeInfo('Sauropsida') return this node_data:
Array ( [taxonid] => 8457 [source] => NCBI )
Array ( [taxonid] => 8457 [source] => NCBI )
nameToMultitreeID('Sauropsida') returns ID:
8457
8457
QUERY:
SELECT DISTINCT calibration_id FROM calibrations_by_NCBI_clade WHERE clade_root_multitree_id = '8457' AND calibration_id IN (SELECT CalibrationID FROM calibrations WHERE PublicationStatus = 4)
SELECT DISTINCT calibration_id FROM calibrations_by_NCBI_clade WHERE clade_root_multitree_id = '8457' AND calibration_id IN (SELECT CalibrationID FROM calibrations WHERE PublicationStatus = 4)
Adding calibration 122 (inner add-op or non-cladistic search)
Adding calibration 123 (inner add-op or non-cladistic search)
Adding calibration 126 (inner add-op or non-cladistic search)
Adding calibration 127 (inner add-op or non-cladistic search)
Adding calibration 128 (inner add-op or non-cladistic search)
Adding calibration 133 (inner add-op or non-cladistic search)
Adding calibration 134 (inner add-op or non-cladistic search)
Adding calibration 135 (inner add-op or non-cladistic search)
Adding calibration 161 (inner add-op or non-cladistic search)
Adding calibration 167 (inner add-op or non-cladistic search)
Adding calibration 168 (inner add-op or non-cladistic search)
Adding calibration 169 (inner add-op or non-cladistic search)
Adding calibration 170 (inner add-op or non-cladistic search)
Adding calibration 171 (inner add-op or non-cladistic search)
Adding calibration 172 (inner add-op or non-cladistic search)
Adding calibration 173 (inner add-op or non-cladistic search)
Adding calibration 174 (inner add-op or non-cladistic search)
Adding calibration 175 (inner add-op or non-cladistic search)
Adding calibration 235 (inner add-op or non-cladistic search)
Adding calibration 236 (inner add-op or non-cladistic search)
Adding calibration 237 (inner add-op or non-cladistic search)
Adding calibration 238 (inner add-op or non-cladistic search)
Adding calibration 239 (inner add-op or non-cladistic search)
Adding calibration 240 (inner add-op or non-cladistic search)
Adding calibration 241 (inner add-op or non-cladistic search)
Adding calibration 242 (inner add-op or non-cladistic search)
Adding calibration 243 (inner add-op or non-cladistic search)
Adding calibration 244 (inner add-op or non-cladistic search)
Adding calibration 278 (inner add-op or non-cladistic search)
Adding calibration 279 (inner add-op or non-cladistic search)
Adding calibration 280 (inner add-op or non-cladistic search)
Adding calibration 281 (inner add-op or non-cladistic search)
Adding calibration 282 (inner add-op or non-cladistic search)
Adding calibration 307 (inner add-op or non-cladistic search)
Adding calibration 308 (inner add-op or non-cladistic search)
Adding calibration 309 (inner add-op or non-cladistic search)
Adding calibration 310 (inner add-op or non-cladistic search)
Adding calibration 311 (inner add-op or non-cladistic search)
Adding calibration 312 (inner add-op or non-cladistic search)
Adding calibration 314 (inner add-op or non-cladistic search)
Adding calibration 315 (inner add-op or non-cladistic search)
Adding calibration 318 (inner add-op or non-cladistic search)
Adding calibration 319 (inner add-op or non-cladistic search)
Adding calibration 320 (inner add-op or non-cladistic search)
Adding calibration 321 (inner add-op or non-cladistic search)
Adding calibration 323 (inner add-op or non-cladistic search)
Adding calibration 337 (inner add-op or non-cladistic search)
Adding calibration 338 (inner add-op or non-cladistic search)
Adding calibration 339 (inner add-op or non-cladistic 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)
'Sphenisciformes':
displayedRelevance: 1 / 1 = 1.00
'Anatoidea (Anatidae - Anseranatidae)':
displayedRelevance: 1 / 1 = 1.00
'Charadrii':
displayedRelevance: 1 / 1 = 1.00
'Fratecula arctica':
displayedRelevance: 1 / 1 = 1.00
'Fraterculinae':
displayedRelevance: 1 / 1 = 1.00
'Alcidae':
displayedRelevance: 1 / 1 = 1.00
'Cepphus carbo - other Cepphus':
displayedRelevance: 1 / 1 = 1.00
'Synthliboramphus craveri - S. hypoleucus':
displayedRelevance: 1 / 1 = 1.00
'Uria':
displayedRelevance: 1 / 1 = 1.00
'Alca torda':
displayedRelevance: 1 / 1 = 1.00
'Charadriiformes':
displayedRelevance: 1 / 1 = 1.00
'Burhinidae':
displayedRelevance: 1 / 1 = 1.00
'Jacanidae':
displayedRelevance: 1 / 1 = 1.00
'Calidridinae':
displayedRelevance: 1 / 1 = 1.00
'Turnicidae':
displayedRelevance: 1 / 1 = 1.00
'Laromorphae':
displayedRelevance: 1 / 1 = 1.00
'Brachyramphus marmoratus - B. brevirostris':
displayedRelevance: 1 / 1 = 1.00
'Uria - Alle':
displayedRelevance: 1 / 1 = 1.00
'Reptilia':
displayedRelevance: 1 / 1 = 1.00
'Diapsida':
displayedRelevance: 1 / 1 = 1.00
'Archosauria':
displayedRelevance: 1 / 1 = 1.00
'Lepidosauria':
displayedRelevance: 1 / 1 = 1.00
'Squamata':
displayedRelevance: 1 / 1 = 1.00
'Neornithes':
displayedRelevance: 1 / 1 = 1.00
'Neognathae':
displayedRelevance: 1 / 1 = 1.00
'Neoaves':
displayedRelevance: 1 / 1 = 1.00
'Palaeognathae':
displayedRelevance: 1 / 1 = 1.00
'Testudines':
displayedRelevance: 1 / 1 = 1.00
'Coracioidea':
displayedRelevance: 1 / 1 = 1.00
'Apodidae':
displayedRelevance: 1 / 1 = 1.00
'Coliiformes':
displayedRelevance: 1 / 1 = 1.00
'Psittaciformes':
displayedRelevance: 1 / 1 = 1.00
'Upupiformes ':
displayedRelevance: 1 / 1 = 1.00
'Phaethontes':
displayedRelevance: 1 / 1 = 1.00
'Threskiornithidae':
displayedRelevance: 1 / 1 = 1.00
'Pelecanidae':
displayedRelevance: 1 / 1 = 1.00
'Fregatidae':
displayedRelevance: 1 / 1 = 1.00
'Phalacrocoracidae':
displayedRelevance: 1 / 1 = 1.00
'Serpentes':
displayedRelevance: 1 / 1 = 1.00
'Aniliidae':
displayedRelevance: 1 / 1 = 1.00
'Boinae':
displayedRelevance: 1 / 1 = 1.00
'Eunectes':
displayedRelevance: 1 / 1 = 1.00
'Charinidae':
displayedRelevance: 1 / 1 = 1.00
'Charininae':
displayedRelevance: 1 / 1 = 1.00
'Loxocemidae':
displayedRelevance: 1 / 1 = 1.00
'Morelia':
displayedRelevance: 1 / 1 = 1.00
'Pan-Caenophidia ':
displayedRelevance: 1 / 1 = 1.00
'Pan-Colubroidea':
displayedRelevance: 1 / 1 = 1.00
'Acrochordus javanicus ':
displayedRelevance: 1 / 1 = 1.00
'Viperinae':
displayedRelevance: 1 / 1 = 1.00
'Colubridae+Elapoidea':
displayedRelevance: 1 / 1 = 1.00
'Naja':
displayedRelevance: 1 / 1 = 1.00
'Oxyuraninae':
displayedRelevance: 1 / 1 = 1.00
'Bungarus':
displayedRelevance: 1 / 1 = 1.00
'Heterodon + Farancia':
displayedRelevance: 1 / 1 = 1.00
'Pantherophis+Pituophis':
displayedRelevance: 1 / 1 = 1.00
> 11.93 Ma | Added Jun 21, 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 »
> 12.08 Ma | Added Jun 21, 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 »
> 10.215 Ma | Added Jun 21, 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 »
> 10 Ma | Added Jun 21, 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 »
> 17 Ma | Added Jun 21, 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 »
> 30.8 Ma | Added Jun 21, 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 »
20–23.8 Ma | Added Jun 21, 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 »
18.05–23.08 Ma | Added Jun 21, 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 »
50.5–72.1 Ma | Added Jun 21, 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 »
66–72.1 Ma | Added Jun 21, 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 »
> 12.5 Ma | Added Apr 14, 2015 |
Head, J.J. 2015. Fossil calibration dates for molecular phylogenetic analysis of snakes 1: Serpentes, Alethinophidia, Boidae, Pythonidae. Palaeontologia Electronica 18.1.6FC.
more »
> 35.2 Ma | Added Apr 14, 2015 |
Head, J.J. 2015. Fossil calibration dates for molecular phylogenetic analysis of snakes 1: Serpentes, Alethinophidia, Boidae, Pythonidae. Palaeontologia Electronica 18.1.6FC.
more »
> 18.7 Ma | Added Apr 14, 2015 |
Head, J.J. 2015. Fossil calibration dates for molecular phylogenetic analysis of snakes 1: Serpentes, Alethinophidia, Boidae, Pythonidae. Palaeontologia Electronica 18.1.6FC.
more »
> 35.2 Ma | Added Apr 14, 2015 |
Head, J.J. 2015. Fossil calibration dates for molecular phylogenetic analysis of snakes 1: Serpentes, Alethinophidia, Boidae, Pythonidae. Palaeontologia Electronica 18.1.6FC.
more »
> 12.375 Ma | Added Apr 14, 2015 |
Head, J.J. 2015. Fossil calibration dates for molecular phylogenetic analysis of snakes 1: Serpentes, Alethinophidia, Boidae, Pythonidae. Palaeontologia Electronica 18.1.6FC.
more »
58–64 Ma | Added Apr 13, 2015 |
Head, J.J. 2015. Fossil calibration dates for molecular phylogenetic analysis of snakes 1: Serpentes, Alethinophidia, Boidae, Pythonidae. Palaeontologia Electronica 18.1.6FC.
more »
> 72.1 Ma | Added Apr 13, 2015 |
Head, J.J. 2015. Fossil calibration dates for molecular phylogenetic analysis of snakes 1: Serpentes, Alethinophidia, Boidae, Pythonidae. Palaeontologia Electronica 18.1.6FC.
more »
98.32–113 Ma | Added Apr 13, 2015 |
Head, J.J. 2015. Fossil calibration dates for molecular phylogenetic analysis of snakes 1: Serpentes, Alethinophidia, Boidae, Pythonidae. Palaeontologia Electronica 18.1.6FC.
more »
< 24.52 Ma | Added Apr 12, 2015 |
Smith, N.D and D.T. Ksepka. 2015. Five well-supported fossil calibrations within the "Waterbird" assemblage (Tetrapoda, Aves). Palaeontologia Electronica 18.1.7FC.
more »
> 51.81 Ma | Added Apr 12, 2015 |
Smith, N.D and D.T. Ksepka. 2015. Five well-supported fossil calibrations within the "Waterbird" assemblage (Tetrapoda, Aves). Palaeontologia Electronica 18.1.7FC.
more »
> 28.1 Ma | Added Apr 12, 2015 |
Smith, N.D and D.T. Ksepka. 2015. Five well-supported fossil calibrations within the "Waterbird" assemblage (Tetrapoda, Aves). Palaeontologia Electronica 18.1.7FC.
more »
< 53.9 Ma | Added Apr 12, 2015 |
Smith, N.D and D.T. Ksepka. 2015. Five well-supported fossil calibrations within the "Waterbird" assemblage (Tetrapoda, Aves). Palaeontologia Electronica 18.1.7FC.
more »
> 56 Ma | Added Apr 12, 2015 |
Smith, N.D and D.T. Ksepka. 2015. Five well-supported fossil calibrations within the "Waterbird" assemblage (Tetrapoda, Aves). Palaeontologia Electronica 18.1.7FC.
more »
> 46.6 Ma | Added Nov 16, 2014 |
Ksepka, D.T. and Clarke, J.A. 2015. Phylogenetically vetted and stratigraphically constrained fossil calibrations within Aves. Palaeontologia Electronica, 18.1.3FC.
more »
> 53.5 Ma | Added Nov 16, 2014 |
Ksepka, D.T. and Clarke, J.A. 2015. Phylogenetically vetted and stratigraphically constrained fossil calibrations within Aves. Palaeontologia Electronica, 18.1.3FC.
more »
> 56.22 Ma | Added Nov 16, 2014 |
Ksepka, D.T. and Clarke, J.A. 2015. Phylogenetically vetted and stratigraphically constrained fossil calibrations within Aves. Palaeontologia Electronica, 18.1.3FC.
more »
> 51 Ma | Added Nov 16, 2014 |
Ksepka, D.T. and Clarke, J.A. 2015. Phylogenetically vetted and stratigraphically constrained fossil calibrations within Aves. Palaeontologia Electronica, 18.1.3FC.
more »
> 51.57 Ma | Added Nov 16, 2014 |
Ksepka, D.T. and Clarke, J.A. 2015. Phylogenetically vetted and stratigraphically constrained fossil calibrations within Aves. Palaeontologia Electronica, 18.1.3FC.
more »
Array ( [CalibrationID] => 244 [NodeName] => Testudines [HigherTaxon] => Reptilia [MinAge] => 155.6 [MinAgeExplanation] => The holotype of <i>Caribemys oxfordiensis</i> de la Fuente and Iturralde-Vinent, 2001 (MNHNCu P-3209) from the Oxfordian Jugua Formation of Cuba is a total group pleurodire and thus placed inside crown Testudines has been universally accepted (e.g., de la Fuente and Iturralde-Vinent, 2001; Gaffney et al., 2006; Joyce, 2007; Sterli and de la Fuente, 2011; Anquetin, 2012). Thus the minimum constraint on the age of crown Testudines is placed at the top of the Oxfordian (155.7 ± 4.0 Ma; Gradstein et al., 2004; Ogg et al., 2008) at 155.6 Ma. [MaxAge] => 251.4 [MaxAgeExplanation] => A constraint for the oldest possible age of the turtle crown must encompass <i>Proterochersis robusta</i>, even though its status as a crown turtle is highly questionable. The Lower to Middle Triassic has produced just one total group testudine, <i>Odontochelys semitestacea</i> Li et al., 2008, and we see no reason to doubt its placement as the oldest unambiguous stem-turtle (Anquetin, 2012). Rich Permian fossil sites worldwide have failed to yield anything that resembles a crown turtle, beyond the enigmatic <i>Eunotosaurus africanus</i> Seeley, 1892, which generally appears to serve the role of an early stem turtle well (Lyson et al., 2010). We therefore place our hard maximum at the base of the Triassic (251.0 ± 0.4 Ma; Gradstein et al., 2004; Ogg et al., 2008) at 251.4 Ma. [PrimaryLinkedFossilID] => 173 [DateCreated] => 2014-10-08 16:19:52 [PublicationID] => 374 [ShortName] => Joyce et al. 2013 [FullReference] => Joyce, W.G., Parham, J.F., Lyson, T.R., Warnock, R.C.M., Donoghue, P.C.J. 2013. A divergence dating analysis of turtles using fossil calibrations: an example of best practices. Journal of Paleontology 87, 612-634. [DOI] => [image] => [image_caption] => [qualifiers] => Array ( [0] => Array ( [relationship] => 07-CLADE-MEMBER [relevance] => 1 ) ) [displayedRelationship] => 07-CLADE-MEMBER [displayedRelevance] => 1.00 )
155.6–251.4 Ma | Added Oct 08, 2014 |
Joyce, W.G., Parham, J.F., Lyson, T.R., Warnock, R.C.M., Donoghue, P.C.J. 2013. A divergence dating analysis of turtles using fossil calibrations: an example of best practices. Journal of Paleontology 87, 612-634.
more »
56.8–86.8 Ma | Added Oct 04, 2014 |
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 »
60.2–86.8 Ma | Added Oct 04, 2014 |
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 »
66–86.8 Ma | Added Oct 04, 2014 |
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 »
66–86.8 Ma | Added Oct 04, 2014 |
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 »
168.9–209.5 Ma | Added Oct 03, 2014 |
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 »
238–252.7 Ma | Added Oct 03, 2014 |
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 »
247.1–260.2 Ma | Added Oct 03, 2014 |
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 »
255.9–295.9 Ma | Added Oct 03, 2014 |
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 »
255.9–295.9 Ma | Added Oct 03, 2014 |
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 »
> 15.97 Ma | Added May 07, 2014 |
Smith, N.A. 2015. Sixteen vetted fossil calibrations for divergence dating of Charadriiformes (Aves, Neognathae). Palaeontologia Electronica 18.1.4FC.
more »
> 1.5 Ma | Added May 07, 2014 |
Smith, N.A. 2015. Sixteen vetted fossil calibrations for divergence dating of Charadriiformes (Aves, Neognathae). Palaeontologia Electronica 18.1.4FC.
more »
> 23.6 Ma | Added May 06, 2014 |
Smith, N.A. 2015. Sixteen vetted fossil calibrations for divergence dating of Charadriiformes (Aves, Neognathae). Palaeontologia Electronica 18.1.4FC.
more »
> 30 Ma | Added May 06, 2014 |
Smith, N.A. 2015. Sixteen vetted fossil calibrations for divergence dating of Charadriiformes (Aves, Neognathae). Palaeontologia Electronica 18.1.4FC.
more »
> 11.62 Ma | Added May 06, 2014 |
Smith, N.A. 2015. Sixteen vetted fossil calibrations for divergence dating of Charadriiformes (Aves, Neognathae). Palaeontologia Electronica 18.1.4FC.
more »
> 30 Ma | Added May 06, 2014 |
Smith, N.A. 2015. Sixteen vetted fossil calibrations for divergence dating of Charadriiformes (Aves, Neognathae). Palaeontologia Electronica 18.1.4FC.
more »
> 23.03 Ma | Added May 06, 2014 |
Smith, N.A. 2015. Sixteen vetted fossil calibrations for divergence dating of Charadriiformes (Aves, Neognathae). Palaeontologia Electronica 18.1.4FC.
more »
> 46.5 Ma | Added May 06, 2014 |
Smith, N.A. 2015. Sixteen vetted fossil calibrations for divergence dating of Charadriiformes (Aves, Neognathae). Palaeontologia Electronica 18.1.4FC.
more »
> 7.3 Ma | Added May 05, 2014 |
Smith, N.A. 2015. Sixteen vetted fossil calibrations for divergence dating of Charadriiformes (Aves, Neognathae). Palaeontologia Electronica 18.1.4FC.
more »
> 2.6 Ma | Added May 05, 2014 |
Smith, N.A. 2015. Sixteen vetted fossil calibrations for divergence dating of Charadriiformes (Aves, Neognathae). Palaeontologia Electronica 18.1.4FC.
more »
> 1.5 Ma | Added Jun 03, 2013 |
Smith, N.A. 2015. Sixteen vetted fossil calibrations for divergence dating of Charadriiformes (Aves, Neognathae). Palaeontologia Electronica 18.1.4FC.
more »
> 6.7 Ma | Added Jun 03, 2013 |
Smith, N.A. 2015. Sixteen vetted fossil calibrations for divergence dating of Charadriiformes (Aves, Neognathae). Palaeontologia Electronica 18.1.4FC.
more »
> 34.2 Ma | Added Jun 03, 2013 |
Smith, N.A. 2015. Sixteen vetted fossil calibrations for divergence dating of Charadriiformes (Aves, Neognathae). Palaeontologia Electronica 18.1.4FC.
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> 6.7 Ma | Added May 30, 2013 |
Smith, N.A. 2015. Sixteen vetted fossil calibrations for divergence dating of Charadriiformes (Aves, Neognathae). Palaeontologia Electronica 18.1.4FC.
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> 4.2 Ma | Added May 30, 2013 |
Smith, N.A. 2015. Sixteen vetted fossil calibrations for divergence dating of Charadriiformes (Aves, Neognathae). Palaeontologia Electronica 18.1.4FC.
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> 41.3 Ma | Added May 30, 2013 |
Smith, N.A. 2015. Sixteen vetted fossil calibrations for divergence dating of Charadriiformes (Aves, Neognathae). Palaeontologia Electronica 18.1.4FC.
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> 66.5 Ma | Added May 30, 2013 |
Ksepka, D.T. and Clarke, J.A. 2015. Phylogenetically vetted and stratigraphically constrained fossil calibrations within Aves. Palaeontologia Electronica, 18.1.3FC.
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> 60.5 Ma | Added May 30, 2013 |
Ksepka, D.T. and Clarke, J.A. 2015. Phylogenetically vetted and stratigraphically constrained fossil calibrations within Aves. Palaeontologia Electronica, 18.1.3FC.
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