arkL edit interval

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select id,columnx from arkL_columns where dataset_id like 24

View/Edit arkL Database interval - Lootsbergian LandVertz

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The age-window currently being used to search for terms for autocompletion is 199.875 -> 302.4 Ma.

	interval above:	Nonesian LandVertz
parent-intervals:	this interval:	Lootsbergian LandVertz	sub-intervals:
	interval below:	Platbergian LandVertz

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Interval data

intervalx:	Lootsbergian LandVertzhas added abv?yesid: 8665 sort:234
alternative_term:	block label:
formal term:
interval_type:
parent_interval:
dataset:	Vert - Fish and Reptile faunachrons (dataset id = 24)
alt dataset:	(dataset id = )
TSC Column:	id:287
stage:
colour:
interval_notes:	The Lootsbergian LVF begins with the first appearance of Lystrosaurus, a squat, dog-sized, semi-aquatic, dicynodont herbivore that may have been semi-aquatic. Lystrosaurus details and artists reconstruction: https://en.wikipedia.org/wiki/Lystrosaurus . The predominant terrestrial or semi-aquatic forms in the Early Triassic were therapsids, a major lineage of synapsids (“fused arch) that are considered to be “mammal-like reptiles”. Three groups of therapsids survived the end-Permian mass extinction – cynodonts (“dog-toothed”), dicynodonts (“two dog-toothed”, with two tusks in its upper jaw) and large-skulled therocephalian (“beast head”) carnivores. The therapsids diminished in importance through the Triassic,
compilation_notes:
refs to add:
linked refs:
preset_duration:
preset_duration_notes:
tracecode	; Q1base from event age; Q2top from event age; Q3a duration from base & top

	age2020	age		event	event_id	pup	in interval	age	age2020
Top:		249.8750	<---	FAD Cynognathus (cynodont)	10362	0.0000	Olenekian	249.875	00249.8770
Base:		252.4000	<---	FAD Lystrosaurus (dicynodont)	10360	0.0000		252.4	00252.4020
base notes	The Lootsbergian LVF begins in latest Permian (placed here as 0.5 myr below) with the first appearance of Lystrosaurus From Permo-Carb workbook: DASHED -- Permophiles 2013 show as about 90% up in Changhsingian. Lystrosaurus details and image: http://fossil.wikia.com/wiki/Lystrosaurus . Overlaps Dicynodon slightly (begins in Reversed-polarity zone below base-Triassic -- put im middle of that Reversed-zone here), and becomes extinct in earliest Triassic. 'the FAD of Lystrosaurus is actually latest Permian' (Lucas, 2006)				comp notes

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Interval References

Dataset References

Lucas, S. G. (2009a). Global Jurassic tetrapod biochronology. Volumina Jurassica. 6: 99-108. gs

Lucas, S. G. (2010b). The Triassic timescale based on nonmarine tetrapod biostratigraphy and biochronology. In, Lucas, S. G. (ed.) The Triassic Timescale. Geological Society of London, Special Publications . 334: 17-39. gs

Lucas, S. G., Sullivan, R. M. & Spielmann, J. A. (2012a). Cretaceous vertebrate biochronology, North American Western Interior. Journal of Stratigraphy. 36(2): 426-461. gs