arkL edit interval

arkL

select id,columnx from arkL_columns where dataset_id like 62

View/Edit arkL Database interval - Arshantan ChinaLMA

Navigation

The age-window currently being used to search for terms for autocompletion is -4.6005 -> 102.0504 Ma.

	interval above:	Irdinmanhan ChinaLMA
parent-intervals:	this interval:	Arshantan ChinaLMA	sub-intervals:
	interval below:	Bumbanian ChinaLMA

Mode selector

Interval data

intervalx:	Arshantan ChinaLMAhas added abv?yesid: 16057 sort:567
alternative_term:	block label:
formal term:
interval_type:
parent_interval:
dataset:	mammals Asia & China (dataset id = 62)
alt dataset:	(dataset id = )
TSC Column:	id:531
stage:
colour:
interval_notes:
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:		45.3995	<---	base Irdinmanhan	8137	0.3000	C20r	45.3995	00045.3995
Base:		52.0504	<---	base Arshantan	8138	0.6000	C23r	52.0504	00052.0504
base notes	Base put in C23r.6 at ca. 52 Ma following Wang et al. (2019) -- as recommended by J.Hooker, 30Sept’19. Previously, was 75% up in the C24r subchron following R. Speijer’s 23Sept’19 advice that "Wang et al. (2010) placed this Top Bumbanian level in the upper part of C24r.". Named after the Arshanto Fm (Erlian Basin, China). BUT, base is debated - 30Sept’19 emails: J.Hooker: Wang et al (2019) estimate base Arshantan to be in C23r at c.52Ma. followed by R. Speijer: "I used the only properly published paleomag data (top C24r) in Wang et al. 2010. Apparently, this turned out not compatible with the observation of a presumably older fauna in C24n, so C24r was changed to C23r. I don?t quite agree with this procedure, but for me a higher placement is fine. It?s time that this group publishes a full synthesis of all paleomag data relative to the ALMAs. " J. Hooker adds: " I don?t mind which level is used" "Both the Mixodontia and Arctostylopida disappeared, whereas the large archaic ungulates, such as Coryphodontidae and Dinocerata, still persisted. Among the extant mammalian groups, the Perissodactyla significantly diversed and are dominant in the fauna. Most newly appeared families are of Perissodactyla. The perissodactyl families, Lophialetidae and Deperetellidae greatly flourished. Mammalian taxa, common and limited in the Arshantan, include Mesonyx, Mongolonyx, Gobiatherium, Schlosseria, Pappaceras, Litolophus, Erlianomys, Advenimus ulungurensis, Dawsonolagus." (Wang et al., 2019).				comp notes

if you were a logged in editor there would be an input button here

Interval References

Dataset References