Gilboa - Fossil Ecosystems of North America: A Guide to the Sites and their Extraordinary Biotas - page 92

91

91 Stratigraphy of the
Middle Devonian of the
Gilboa area, New York after
Sevon and Woodrow, 1985.

Cincinnatus
Otselic

Oneonta

Upper Tully

Gilboa

Lower Tully

Manorkill

Moscow

Portland Point

Plattekill

Panther

Mountain

Cherry Valley Limestone

Bakoven Shale

Moorehouse Limestone

Edgecliff Limestone

mainly
shale

mainly
sandstone

limestone strata eroded

92

92 A modern lycopod, ground
cedar Diphasiastrum
digitatum, growing in
Virginia. Height approximately
14 cm 5.5 in.

major trees in the coal forests.
Arborescent (tree-like) lycopods at Gilboa
include Amphidoxodendron , ? Sigillaria ,
and Lepidosigillaria (Grierson and Banks,
1963). Lepidosigillaria is one of the best-

known Devonian trees, and a famous
example was found at the town of Naples,
in the Finger Lakes region of western New
York, in black mudstone (Banks, 1966).
The trunk, some 4 m (12 ft) long, is