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	<title>File:GSG GLA FIG 21 02.jpg - Revision history</title>
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	<updated>2026-04-17T19:10:02Z</updated>
	<subtitle>Revision history for this page on the wiki</subtitle>
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	<entry>
		<id>http://earthwise-staging.bgs.ac.uk/index.php?title=File:GSG_GLA_FIG_21_02.jpg&amp;diff=39592&amp;oldid=prev</id>
		<title>Scotfot: /* {{int:filedesc}} */</title>
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		<updated>2019-02-11T09:42:27Z</updated>

		<summary type="html">&lt;p&gt;&lt;span dir=&quot;auto&quot;&gt;&lt;span class=&quot;autocomment&quot;&gt;{{int:filedesc}}&lt;/span&gt;&lt;/span&gt;&lt;/p&gt;
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				&lt;td colspan=&quot;2&quot; style=&quot;background-color: #fff; color: #202122; text-align: center;&quot;&gt;← Older revision&lt;/td&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: #fff; color: #202122; text-align: center;&quot;&gt;Revision as of 10:42, 11 February 2019&lt;/td&gt;
				&lt;/tr&gt;&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot; id=&quot;mw-diff-left-l1&quot;&gt;Line 1:&lt;/td&gt;
&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot;&gt;Line 1:&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;=={{int:filedesc}}==&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;=={{int:filedesc}}==&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;{{Information&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;{{Information&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;−&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;|description={{en|1=Figure 21.2 Some of the fish (a-g), eurypterids (h, i) and plant (j) fossils that occur in the Fish Bed: all natural size unless otherwise indicated. a, b, thelodont &#039;&#039;Lanarkia spinosa&#039;&#039; (after Traquair), a, as it appears flattened in the rock (&#039;&#039;Logania taiti&#039;&#039; also occurs here–compare with [[Media:GSG_GLA_FIG_21_01.jpg|(Figure 22.1)]] b); b, detail of trunk denticles (x6); c, unarmoured anaspid Lasanius problematicus (after Parrington and Miles); d, armoured anaspid &#039;&#039;Birkenia elegans&#039;&#039; (after Stetson, Heintz and Ritchie).  &lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;+&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;|description={{en|1=Figure 21.2 Some of the fish (a-g), eurypterids (h, i) and plant (j) fossils that occur in the Fish Bed: all natural size unless otherwise indicated. a, b, thelodont &#039;&#039;Lanarkia spinosa&#039;&#039; (after Traquair), a, as it appears flattened in the rock (&#039;&#039;Logania taiti&#039;&#039; also occurs here–compare with [[Media:GSG_GLA_FIG_21_01.jpg|(Figure 22.1)]] b); b, detail of trunk denticles (x6); c, unarmoured anaspid Lasanius problematicus (after Parrington and Miles); d, armoured anaspid &#039;&#039;Birkenia elegans&#039;&#039; (after Stetson, Heintz and Ritchie). &lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;e-g, cephalaspid &#039;&#039;Ateleaspis tessellata&#039;&#039;, e, upper surface of head-shield; f, side view; (after Ritchie) ; g, spinous scales from trunk behind head and from low down on sid e, x2 (after Traquair), h, i, sea-scorpion &#039;&#039;Lanarkopterus dolichoschelus&#039;&#039;, h, under surface, showing type A (?male) genital appendage,and i, upper surface, X0.5 (after Ritchie), j. ?alga &#039;&#039;Taitia catena&#039;&#039; (after Crookall ).&lt;/ins&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-side-deleted&quot;&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;+&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt; &lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;{{GSGGlasgow}}}}&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;{{GSGGlasgow}}}}&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;|date=2019-02-11 09:04:40&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;|date=2019-02-11 09:04:40&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;/table&gt;</summary>
		<author><name>Scotfot</name></author>
	</entry>
	<entry>
		<id>http://earthwise-staging.bgs.ac.uk/index.php?title=File:GSG_GLA_FIG_21_02.jpg&amp;diff=39588&amp;oldid=prev</id>
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		<updated>2019-02-11T09:34:32Z</updated>

		<summary type="html">&lt;p&gt;&lt;span dir=&quot;auto&quot;&gt;&lt;span class=&quot;autocomment&quot;&gt;{{int:filedesc}}&lt;/span&gt;&lt;/span&gt;&lt;/p&gt;
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				&lt;td colspan=&quot;2&quot; style=&quot;background-color: #fff; color: #202122; text-align: center;&quot;&gt;← Older revision&lt;/td&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: #fff; color: #202122; text-align: center;&quot;&gt;Revision as of 10:34, 11 February 2019&lt;/td&gt;
				&lt;/tr&gt;&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot; id=&quot;mw-diff-left-l1&quot;&gt;Line 1:&lt;/td&gt;
&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot;&gt;Line 1:&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;=={{int:filedesc}}==&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;=={{int:filedesc}}==&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;{{Information&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;{{Information&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;−&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;|description={{en|1=Figure 21.2 Some of the fish (a-g), eurypterids (h, i) and plant (j) fossils that occur in the Fish Bed: all natural size unless otherwise indicated. a, b, thelodont Lanarkia spinosa (after Traquair), a, as it appears flattened in the rock (Logania taiti also occurs here–compare with Figure 22.1 b); b, detail of trunk denticles (x6); c, unarmoured anaspid Lasanius problematicus (after Parrington and Miles); d, armoured anaspid Birkenia elegans (after Stetson, Heintz and Ritchie&lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;). denticles are sub-circular, crenulated and interlocking, whereas posteriorly they become more elongate and spined (Figure 22.1 c-e). The thelodonts Lanarkia horrida, L. spinosa and L. spinulosa are similar to Logania in body form, but their denticles are distinctive in being relatively long, hollow, conical spines (Figure 21.2 a, b&lt;/del&gt;).&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;+&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;|description={{en|1=Figure 21.2 Some of the fish (a-g), eurypterids (h, i) and plant (j) fossils that occur in the Fish Bed: all natural size unless otherwise indicated. a, b, thelodont &lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;&#039;&#039;&lt;/ins&gt;Lanarkia spinosa&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;&#039;&#039; &lt;/ins&gt;(after Traquair), a, as it appears flattened in the rock (&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;&#039;&#039;&lt;/ins&gt;Logania taiti&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;&#039;&#039; &lt;/ins&gt;also occurs here–compare with &lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;[[Media:GSG_GLA_FIG_21_01.jpg|(&lt;/ins&gt;Figure 22.1&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;)]] &lt;/ins&gt;b); b, detail of trunk denticles (x6); c, unarmoured anaspid Lasanius problematicus (after Parrington and Miles); d, armoured anaspid &lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;&#039;&#039;&lt;/ins&gt;Birkenia elegans&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;&#039;&#039; &lt;/ins&gt;(after Stetson, Heintz and Ritchie).  &lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;{{GSGGlasgow}}}}&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;{{GSGGlasgow}}}}&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;|date=2019-02-11 09:04:40&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;|date=2019-02-11 09:04:40&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;/table&gt;</summary>
		<author><name>Scotfot</name></author>
	</entry>
	<entry>
		<id>http://earthwise-staging.bgs.ac.uk/index.php?title=File:GSG_GLA_FIG_21_02.jpg&amp;diff=39582&amp;oldid=prev</id>
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		<updated>2019-02-11T09:24:44Z</updated>

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|description={{en|1=Figure 21.2 Some of the fish (a-g), eurypterids (h, i) and plant (j) fossils that occur in the Fish Bed: all natural size unless otherwise indicated. a, b, thelodont Lanarkia spinosa (after Traquair), a, as it appears flattened in the rock (Logania taiti also occurs here–compare with Figure 22.1 b); b, detail of trunk denticles (x6); c, unarmoured anaspid Lasanius problematicus (after Parrington and Miles); d, armoured anaspid Birkenia elegans (after Stetson, Heintz and Ritchie). denticles are sub-circular, crenulated and interlocking, whereas posteriorly they become more elongate and spined (Figure 22.1 c-e). The thelodonts Lanarkia horrida, L. spinosa and L. spinulosa are similar to Logania in body form, but their denticles are distinctive in being relatively long, hollow, conical spines (Figure 21.2 a, b).&lt;br /&gt;
{{GSGGlasgow}}}}&lt;br /&gt;
|date=2019-02-11 09:04:40&lt;br /&gt;
|source=Geological Society of Glasgow&lt;br /&gt;
|author=Geological Society of Glasgow&lt;br /&gt;
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		<author><name>Scotfot</name></author>
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