gymnosperms. Archaeopteris reproduced by releasing spores rather than by producing seeds, but some of the species, such as Archaeopteris halliana were...

leaves. Archaeopteris macilenta leaves and fertile shoots are attached to wood which when permineralized is called Callixylon newberryi. Archaeopteris is retained...

present, including roots, leaves and secondary wood in trees such as Archaeopteris. The Carboniferous Period saw the development of forests in swampy environments...

trunks, fronds, and roots. The earliest tree was once thought to be Archaeopteris, which bears simple, fern-like leaves spirally arranged on branches...

ferns, from earlier progymnosperms), first trees (the progymnosperm Archaeopteris), and first winged insects (palaeoptera and neoptera). Strophomenid...

Middle Devonian (about 385 million years ago). Prior to this discovery, Archaeopteris was the earliest known tree. Both of these reproduced by spores rather...

several separate lineages of vascular plants, in progymnosperms like Archaeopteris, in Sphenopsida, ferns and later in the gymnosperms and angiosperms...

of progymnosperms gave rise to the first really large trees known as Archaeopteris. The latest surviving group of progymnosperms is the Noeggerathiales...

accompanied by the progymnosperms, including the first large trees Archaeopteris. The Late Devonian extinction probably also resulted in osteolepiform...

was later discovered to be a member of the same family as the genus Archaeopteris. It was a series of pieces that were eventually reconstructed to form...

the herbaceous genus Equisetum, the only living sphenophyte genus. Archaeopteris Elgorriaga, A.; Escapa, I.H.; Rothwell, G.W.; Tomescu, A.M.F.; Cúneo...

cladoxylopsid plants like Calamophyton. Appeared in the Late Devonian, Archaeopteris was both tree-like and fern-like plant, growing to 20 metres (66 ft)...

greatly magnify the role of plants on the global scale. In particular, Archaeopteris forests expanded rapidly during the closing ages of the Devonian. These...

arborescent, woody vascular plant, the cladoxylopsids and progymnosperm Archaeopteris. These tracheophytes were able to grow to large size on dry land because...

Lepidodendron, showing dichotomous branching at the top of the trunk Archaeopteris Carboniferous Evolutionary history of plants Fossil Grove Glossopteris...

Devonian (~370 million years ago) some free-sporing plants such as Archaeopteris had secondary vascular tissue that produced wood and had formed forests...

demonstrated that the fossil wood known as Callixylon and the leaves known as Archaeopteris were actually part of the same plant. In 1917, he studied kukersite...

the Aztec Siltstone, there is a strong indication that the trees were Archaeopteris-Callixylon. In upper New York State, there have been Devonian trees...

Name Species Location Age Notes Callixylon tree Archaeopteris Ada, Oklahoma, US 250,000,000 Discovered on a farm it was the largest example of a petrified...

D C P T J K Pg N Reconstruction of the extinct progymnosperm plant Archaeopteris macilenta based on fossils from the Catskill Mountains of New York....

land animal from Gondwana, and a diverse flora of plants including Archaeopteris notosaria, Africa's earliest woody tree. In addition to numerus undescribed...

sandstones. There is a fossil assemblage containing Cyclostigma and Archaeopteris and Archaeopteris hibernica. Most of the county is principally limestone of the...

have contributed to the Late Devonian extinction event as early tree Archaeopteris drew down CO2 levels, leading to global cooling and lowered sea levels...

New York State Museum discovered more fossils of Cladoxylopsida and Archaeopteris in a quarry in Cairo, New York. A recent (2017) discovery in Xinjiang...

Examples: Archaeopteryx ("ancient wing"); Archaeoindris ("ancient Indri"); Archaeopteris ("ancient fern"); Archaeanthus ("ancient flower") -arctos, arcto-: Pronunciation:...

have true roots and leaves, and many were quite tall. The tree-like Archaeopteris, ancestral to the gymnosperms, and the giant cladoxylopsid trees had...

Labyrinthodontia, the group that now includes reptiles and mammals. Archaeopteris (fern-like trees), Tiktaalik (lungfish) walks on land. Ichthyostega...

†Annularia stellata †Archaeopteris †Archaeopteris halliana †Archaeopteris hibernica †Archaeopteris macilenta †Archaeopteris obusa †Archaeopteris sphenophyllifolia...

†Aphyllopteris †Archaeopteris †Archaeopteris halliana †Archaeopteris hibernica †Archaeopteris macilenta †Archaeopteris obtusa †Archaeopteris sphenophyllifolia...

miospores are known from this member. Examples of which include Hostinella, Archaeopteris, Retusotriletes rugulatus, and Ancyrospora. Palynological studies indicate...