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113 results for “Fossil calibration”
FIGURE 8 in Phylogenetically vetted and stratigraphically constrained fossil calibrations within Aves
FIGURE 8. Stratigraphic distribution of fossil Pan-Apodidae in the Paleogene. The minimum possible age of the calibrating specimen NHMUK A5430 is presented, and midpoints of age ranges are shown for the ages of other Paleogene swift specimens.
FIGURE 6 in Phylogenetically vetted and stratigraphically constrained fossil calibrations within Aves
FIGURE 6. Stratigraphic distribution of fossil Coracii in the Paleogene. The minimum possible age of the calibrating specimen of Primobucco mcgrewi is presented, and midpoints of age ranges are shown for the ages of other Paleogene roller in specimens. A precise stratigraphic placement for the Condé-en-Brie specimen is not available (see text).
FIGURE 10 in Phylogenetically vetted and stratigraphically constrained fossil calibrations within Aves
FIGURE 10. Stratigraphic distribution of fossil Coliiformes in the Paleogene. The minimum possible age of the calibrating specimen of Sandcoleus copiosus is presented, and midpoints of age ranges are shown for the ages of other Paleogene mousebird specimens.
FIGURE 13 in Phylogenetically vetted and stratigraphically constrained fossil calibrations within Aves
FIGURE 13. Phylogenetic tree showing position of Messelirrisor halcyrostris, illustrating the divergence calibrated by SMF-ME 1883a+b.
FIGURE 3 in Phylogenetically vetted and stratigraphically constrained fossil calibrations within Aves
FIGURE 3. Phylogenetic tree showing position of Waimanu manneringi, illustrating the divergence calibrated by CM zfa35.
FIGURE 12 in Phylogenetically vetted and stratigraphically constrained fossil calibrations within Aves
FIGURE 12. Stratigraphic distribution of fossil Pan-Psittaciformes in the Paleogene. The minimum possible age of the calibrating specimen NMH A6207 is presented, and midpoints of age ranges are shown for the ages of other Paleogene parrot specimens. Note that the London Clay Formation also contains multiple associated skeletons and isolated bones in addition to the holotype of Pulchrapollia gracilis that serves as a calibration point.
FIGURE 9 in Phylogenetically vetted and stratigraphically constrained fossil calibrations within Aves
FIGURE 9. Phylogenetic tree showing position of Sandcoleus copiosus, illustrating the divergence calibrated by USNM 433912.
FIGURE 5 in Phylogenetically vetted and stratigraphically constrained fossil calibrations within Aves
FIGURE 5. Phylogenetic tree showing position of Primobucco mcgrewi, illustrating the divergence calibrated by USNM 336484.
FIGURE 1 in Fossil calibration dates for molecular phylogenetic analysis of snakes 2: Caenophidia, Colubroidea, Elapoidea, Colubridae
FIGURE 1. Phylogeny of Caenophidia from Pyron et al. (2013a) temporally calibrated on minimum ages reported here. Taxon names in grey have not been described in the fossil record. Taxon names in black have been described from fossils. See Holman (2000) and Szyndlar (2012) for records. Taxa labeled with two identifiers represent the most inclusive clades subtended by those identifiers following Pyron et al. (2013a).
FIGURE 3. A in How to date a dragonfly: Fossil calibrations for odonates
FIGURE 3. A cladogram of Odonata (adapted from Carle et al., 2015) showing the phylogenetic relationships among Anisopteran families. The species highlighted in blue are the crown group fossils discussed in this manuscript. Node numbers are listed in the order in which they are discussed in the manuscript. Node ages indicate the minimum age of the crown fossil used. The question mark indicates weak support for the node Petaluridae + Gomphidae (see Carle et al., 2015 for more details). Extinct species are indicated by a dagger. Note: nodes 2, 5, 6, 8, 9, and 10 are drawn for simplicity, but these fossil taxa may be nested deep within the family to which they are assigned. The fossils shown in the tree are not sister to the rest of the members of the family.
FIGURE 1 in How to date a dragonfly: Fossil calibrations for odonates
FIGURE 1. Wing venation of Anisoptera (after Bechly et al., 2001) (details for the abbreviations in Appendix 1).
FIGURE 2 in How to date a dragonfly: Fossil calibrations for odonates
FIGURE 2. Wing venation of Liassophlebia sp., specimen TUClP In 192, from the Liassic alpha of Pechgraben in Germany (Bechly, 1999) (Scale equals 10 mm)
Isotopic and morphologic proxies for reconstructing light environment from fossil leaves: a modern calibration in the Daintree Rainforest, Australia
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Data from: Local molecular clocks in three nuclear genes: divergence times for rodents and other mammals and incompatibility among fossil calibrations.
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Fossilization processes have little impact on tip-calibrated divergence time analyses
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Data from: Marine strontium isotopes preserved in fossil shark teeth calibrate Neogene land mammal evolution
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FIG. 7. — Aquitanobursa n in A review of fossil Bursidae and their use for phylogeny calibration
FIG. 7. — Aquitanobursa n. gen. of Aquitaine Basin: A, Aquitanobursa grateloupi (d'Orbigny, 1852) n. comb., MNHN.F.A27211, lectotype from the Aquitanian of Saint-Paul-les-Dax, France; B, Aquitanobursa inaequicrenata (Cossmann & Peyrot, 1924) n. comb., MNHN.F.A70284, Burdigalian of le Peloua, France; Faullummel coll.; C, Aquitanobursa tuberosa (Grateloup, 1833) n. comb., MNHN.F.A70285, Burdigalian of le Peloua, Staadt coll.
FIG. 6 in A review of fossil Bursidae and their use for phylogeny calibration
FIG. 6. — Aspa subgranulata (d'Orbigny, 1852). MNHN.F.A70283 (Brongniart coll.), ventral (A), lateral left (B) and dorsal (C) views, Miocene of Le Peloua, Landes, France. Scale bar: 2 cm.
FIG. 4 in A review of fossil Bursidae and their use for phylogeny calibration
FIG. 4. — Phylogeny of the Bursidae. Topology based on the multigene Bayesian analysis of Castelin et al. (2012); black dots (●) represent well supported nodes (posterior probabilities over 0.98) and white dots (○) represent moderately supported nodes (PP over 0.90). Bursa species in bold type are taxa that make the genus polyphyletic. Bracket on top indicates the phylogenetic extent of the genus Bursa if we consider the tubular posterior siphonal canal to be one of its synapomorphies, dotted bracket indicates the maximum extent of the genus considering the topology.
FIG. 2 in A review of fossil Bursidae and their use for phylogeny calibration
FIG. 2. — Taxa excluded from Bursidae. Olequahia Stewart, 1926 species: A, B, Olequahia domenginica (Vokes, 1939): UCMP 15804, syntype of Ranella domenginica, Tejon formation (Bartonian), California, United States; A, dorsal view; B, ventral view; C-H, Olequahia washingtoniana (Weaver, 1912): UCMP 16071 (loc. ID D8044), in dorsal (C, F), left lateral (D, G) and ventral views (E, H), all from Cowlitz Formation (Priabonian), Cowlitz River, Washington, United States. Scale bar: 2 cm.
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