comment on this calibration


 node name
Trichoptera     Look for this name in NCBI   Wikipedia   Animal Diversity Web
  recommended citations
Wolfe et al. 2016
  node minimum age
179.66 Ma
Multiple associated ammonites (Eleganticeras elegantulum,Lobolytoceras siemensi, Harpoceras capellatum) indicate that the locality is correlated to the lower part of the H. falciferum ammonite Zone, early Toarcian (Ansorge and Schlüter, 1990; O'Reilly et al., 2015; Pálfy et al., 2000, 2002). The Boreal falciferum Zone is equivalent to the Tethyan Harpoceras serpentinum ammonoid Zone (Macchioni, 2002), and succeeded by the Hildoceras bifrons ammonoid Zone. The base of the bifrons Zone has been dated to 180.36 Ma ± 0.7 Myr (Ogg et al., 2012b). From this, an upper boundary of the falciferum Zone can be derived, and thus a minimum age of 179.66 Ma
  node maximum age
411 Ma
A softmaximum age is estimated from R. praecursor, the oldest hexapod, from the Early Devonian (Pragian) Rhynie Chert of Aberdeenshire, Scotland. Spore assemblages of the Windyfield and stratigraphically underlying Rhynie Chert are dated to the early but not earliest Pragian to early (earliest?) Emsian (polygonalis-emsiensis Spore Assemblage Biozone) (Parry et al., 2011). Radiometric dating of the underlying Milton of Noth Andesite at ca. 411 Ma (Parry et al., 2011, 2013) has been subject to a dispute over its temporal relationship to hot spring activity associated with the cherts (Mark et al., 2011, 2013) and predates the biostratigraphic dating of the Rhynie Chert relative to the global dating of the base of the Pragian Stage. Therefore, a soft maximum constraint may be defined at 411 Ma for the Rhynie Chert.
 primary fossil used to date this node 
MBA 672
Liadotaulius maior, Handlirsch, 1906
Location relative to the calibrated node: Crown

[show fossil details]
     Locality: Grimmen
     Geological age: Jurassic, Mesozoic

More information in Fossilworks   PaleoBioDB

  phylogenetic justification
Taxonomic placement of L. maior requires apomorphies from the male wings, as female wings have many plesiomorphic venation characters (Ansorge, 2002). Further studies of a younger congeneric, Liadotaulius daohugouensisWu and Huang, 2012, reveal new characters shared with crown group Trichoptera. These include the apical part of Cu2 bending towards the wing margin, its desclerotisation, and complete anal veins (Ansorge, 2002; Wu and Huang, 2012). These apomorphies place the genus Liadotaulius in Philopotamidae, a family within crown group Annulipalpa, and thus Trichoptera (Wu and Huang, 2012).
  phylogenetic reference(s)
Ansorge, J. 2002. Upper Liassic Amphiesmenopterans (Trichoptera + Lepidoptera) from Germany–a review. Acta Zool. Cracov. 46, 285–290
 tree image (click image for full size) 
tree image
Figure 24 from Wolfe et al. (2016).