File:The Quarterly journal of the Geological Society of London (12981334394).jpg

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68
PROCEEDINGS OF THE GEOLOGICAL SOCIETY. .Apr. 28,
had been violently broken off. These are the only beds containing
erect trees that I have observed in the lower coal-measures ; and one
of them was observed for the first time in 1857.
Pigs. 1, 2, 3. — Surface-marhiTigs of Lepidodendra from the Lower
Coal-measures of Nova Scotia.
Fig. 1 a.
Fig. 2 a.
Fig. 1 a. Lepidodendron elegans.
Fig. 1 h. Areole and leaf-scar.
Fig. 2 a. Lepidodendron corrugatum.
Fig. 2 b. Areole and leaf-scar.
Fig. 3 a. Lepidodendron Sternbergii.
Fig. 3 b. Areole and leaf -scar.
A second species, rather less abundant, is closely allied to Lepido-
dendron elegans, though a comparison of specimens of different sizes
induces me to believe it distinct. It is distinguished by elongated
ovate areoles, having small triangular leaf-scars. The adjacent
areoles are usually separated by a space of regularly corrugated bark,
equal to their own transverse diameters. The principal wrinkles are
longitudinal ; but there is a delicate transverse series, perceptible
only in the best specimens. From this character, which can be
observed even when the scars are not distinctly preserved, I have
provisionally named the species L. corrugatum. The decorticated
surface of well-preserved specimens of this species presents prominent
scars, with the intervening spaces very delicately corrugated trans-
versely.
A third species, still less abundant, has broadly rhomboidal
areoles, with rhombic scars, each having three vascular punctures.
This species may be L. Sternbergii, though I have seen no figure or
description of that species giving the minute characters of the scars
(see figs. 1, 2, 3, and la, 2a, and Sa). It resembles that figured by

I)r. Jackson as L. dilatatum, from the All^rt Mine.
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Source https://www.flickr.com/photos/biodivlibrary/12981334394
Author Geological Society of London
Full title
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The Quarterly journal of the Geological Society of London.
Page ID
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36161605
Item ID
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111474 (Find related Wikimedia Commons images)
Title ID
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51125
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Page 68
Names
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NameFound:Lepidodendron NameConfirmed:Lepidodendron EOLID:13132167 NameBankID:4921583 NameFound:Lepidodendron corrugatum NameFound:Lepidodendron dilatatum NameFound:Lepidodendron elegans NameConfirmed:Lepidodendron elegans
BHL Page URL
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https://www.biodiversitylibrary.org/page/36161605
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Text
Flickr sets
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  • The Quarterly journal of the Geological Society of London. v. 15 (1859).
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Flickr posted date
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7 March 2014
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This file comes from the Biodiversity Heritage Library.

This tag does not indicate the copyright status of the attached work. A normal copyright tag is still required. See Commons:Licensing.

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26 August 2015

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