arkL edit interval

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select id,columnx from arkL_columns where dataset_id like 81

View/Edit arkL Database interval - Gnathodus texanus RCdontZ

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The age-window currently being used to search for terms for autocompletion is 285.257 -> 396.73 Ma.

	interval above:	Gnathodus bilineatus bilineatus RCdontZ
parent-intervals:	this interval:	Gnathodus texanus RCdontZ	sub-intervals:
	interval below:	Scalliognathus anchoralis RCdontZ

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Interval data

intervalx:	Gnathodus texanus RCdontZhas added abv?yesid: 8832 sort:
alternative_term:	G. texanusblock label:
formal term:
interval_type:
parent_interval:
dataset:	conodonts (dataset id = 81)
alt dataset:	(dataset id = )
TSC Column:	id:243
stage:
colour:
interval_notes:
compilation_notes:
refs to add:
linked refs:
preset_duration:
preset_duration_notes:
tracecode	; Q2top from event age; Q1base from event age; Q3a duration from base & top

	age2020	age		event	event_id	pup	in interval	age	age2020
Top:		335.2570	<---	FAD Gnathodus bilineatus	10401	0.7000	Visean	335.257	00335.2600
Base:		346.7300	<---	FAD Gnathodus homopunctatus	10398	0.0000	Visean	346.73	00346.7300
base notes	Base of Visean Stage (just above at GSSP). Was 'Gnathodus texanus' in previous charts; but called. Gn. homopunctatus in chart of Aretz 25Mar'19 for Europe scale. From GTS2020 spline fit; fixed to be base of Visean. GTS08 = DASH -- Davydov's chart has at 15% above base of Visean; but the G. texanus is considered to be a useful (but not always consistent) working marker for base-Visean by Sevastopulo and Devuyst (Carb. Newsletter, 2005); therefore, set in GTS2016 and here as base-Visean. Was about base-Visean in GTS04/08; but Davydov had higher in GTS2012. Age of 346.73 from GTS2012 was retained in GTS2020 spline which assumed that the CONOP scale of Davydov that was scaled had used the Benthic Foram definition!				comp notes

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