Search results
Results from the WOW.Com Content Network
Psilophyton is a genus of extinct vascular plants. Described in 1859, it was one of the first fossil plants to be found which was of Devonian age (about 420 to 360 million years ago ). Specimens have been found in northern Maine , USA; Gaspé Bay , Quebec and New Brunswick , Canada; the Czech Republic ; and Yunnan , China.
The class was created in 1917 by Kidston and Lang for fossils found in the Rhynie Chert Bed. [4] Three genera were initially included, Rhynia, Horneophyton and Psilophyton. All lacked leaves and true roots, consisting only of branched stems; however they were considered to contain vascular tissue. [1] Additional fossil genera were added later.
Trimerophytopsida (or Trimeropsida) is a class of early vascular plants from the Devonian, informally called trimerophytes.It contains genera such as Psilophyton.This group is probably paraphyletic, and is believed to be the ancestral group from which both the ferns and seed plants evolved.
Fossil of the Middle Ordovician trilobite Illaenus †Illaenus †Kaulangiophyton †Kaulangiophyton akantha †Kolihadiscus †Kolihadiscus somerseti – type locality for species †Leptaena †Leptaena rhomboidalis †Lesueurilla – tentative report †Lophospira †Lophospira milleri – or unidentified comparable form †Mesoleptostrophia ...
Fossil of the primitive Devonian vascular plant Psilophyton †Psilophyton †Pteria – report made of unidentified related form or using admittedly obsolete nomenclature †Ptychagnostus †Pugnax †Receptaculites †Rhynchonella †Rothpletzella † Sarcinula †Schwagerina †Sinutropis †Skenidioides †Solenopora †Solenopora compacta
Fossil of the Middle Devonian horn coral Heliophyllum †Heliophyllum †Heliophyllum halli †Hemiaspis †Hemirhodon †Hepaticites †Hercynella †Hertzina †Hexameroceras †Hibbertia †Hindia †Holopea; Fossil of the Late Ordovician-Middle Devonian Homalonotus †Homalonotus †Hostinella †Hughmilleria †Hungerfordia †Hyolithellus ...
In 1859 he published a reconstruction of a Devonian plant, collected as a fossil from the Gaspé region of Canada, which he named Psilophyton princeps. The reconstruction shows horizontal and upright stem-like structures; no leaves or roots are present.
The splanchnocranium was discovered in 2002 and systematic excavations took place during May and June 2003. [6] The species was described by a team of Spanish paleoanthropologists led by Salvador Moyà-Solà on the basis of a fossil skeleton, IPS21350 (nicknamed Pau ("peace" in Catalan as it was announced alongside Spanish demonstrations against the Iraq War) [7]), discovered in December 2002.