Talk:Timeline of extinctions in the Holocene

Image　placement
Why is the image of the Cape lion on the left and all others on the right. I feel that having the image of the Cape lion on the left breaks the flow of the list. It would be a lot easier to read if all images were on the right of the list. — Preceding unsigned comment added by 218.110.46.240 (talk) 11:30, 18 March 2014 (UTC)

BC/AD?
what gives? why does this article use BC/AD? This has nothing to do with bibilcal references. The proper term should be "BCE/ACE"..

I'm not trying to be an ass, but seriously, the people that write these science articles should know better. shame on them.Ateo (talk) 18:44, 7 May 2008 (UTC)
 * Honestly I think people didn't know that modern convention. Same as with bytecounting these conventions came up not too long ago. By the way I think terms are BCE/CE. --Yamavu (talk) 22:03, 8 May 2008 (UTC)
 * Fixed, btw. –Visionholder (talk) 02:37, 1 October 2009 (UTC)
 * We don't change these formats. All the best: Rich Farmbrough, 21:21, 25 July 2016 (UTC).

Scope
Is this supposed to be the exhaustive list of extinct species?! Or a "list" in what sense? Even the scientifically accepted number of extinctions in recent years is 140,000 species per year. Is there a specific reason for creating this list of <0.01% subsample? How are these particular species selected? Unless something meaningful can be created out of this article, I would recommend deletion of this page. —Preceding unsigned comment added by Subh83 (talk • contribs) 21:29, 19 October 2010 (UTC)

Article Title vs Content
The article title reflects all extinctions, yet the article limits itself to only extinctions during the era of modern humans. What about adding during the modern age? Niluop (talk) 01:47, 11 March 2011 (UTC)

question
I'm not sure if its a good idea to make a timeline of extinctions cause its fact that 17 species of plants or animals go extinct every hour and we can't list them all and we have only listed the ones that have impacted when there have been thousands of other animals that have gone extinct in the timeline of this page.--Jasonz2z (talk) 21:18, 23 August 2011 (UTC)

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External links modified (January 2018)
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A proposal for tabulation
Since there seems to be some inconsistency between recording last documented individuals, and the species being declared officially extinct (which is sometimes decades after, and likely well after extinction took place), plus some of the comments about extinction causes could benefit from rewriting and sources:

Images can remain on the side or be turned into a gallery before each section. Menah the Great (talk) 01:33, 1 March 2021 (UTC)

Deleted entries

 * Hunter Island penguin: actually a chimaera made of remains from three extant species (one of them may be extirpated from Australia and only found in New Zealand, though).
 * Lowland kagu: most likely the same as the extant kagu.
 * Bubo insularis: actually a misidentified local population of Bubo zeylonensis (though a extinct one, but unlike other extinct island populations listed, this animal flies).--Menah the Great (talk) 04:16, 29 March 2021 (UTC)
 * Cyprus dwarf elephant: can't be placed in the 10th millenium BCE with absolute certainty.
 * Cuvieronius: idem.
 * Fratercula dowi: idem.--Menah the Great (talk) 01:07, 2 April 2021 (UTC)
 * Haplomastodon: synonym of Notiomastodon--Menah the Great (talk) 19:09, 2 April 2021 (UTC)
 * Symbos: synonym of Bootherium.
 * Martes nobilis: synonym of Martes americana.
 * Sangamona: invalid name described from bones of Odocoileus, perhaps of different species. source--Menah the Great (talk) 17:31, 3 April 2021 (UTC)
 * Equus santaelenae: synonym of E. neogeus.--Menah the Great (talk) 05:52, 4 April 2021 (UTC)
 * Cyprus dwarf hippopotamus: redated to before the 10th millenium BCE. source--Menah the Great (talk) 20:41, 5 April 2021 (UTC)
 * Eremotherium rusconi: synonym of E. laurillardi.--Menah the Great (talk) 17:57, 17 April 2021 (UTC)

“Eurasian muskox”
I got rid of that entry because I couldn’t find any evidence or references for any separate species that lived in Eurasia. Muskox were extirpated  in Eurasia, but there was never any separate species. 2001:1970:48AA:8100:8812:A641:4894:339D (talk) 04:48, 31 March 2021 (UTC)
 * All linked sources can be read at Google Scholar.--Menah the Great (talk) 01:07, 2 April 2021 (UTC)
 * Yeah, but isn't the species considered synonymous with the North American species? 2001:1970:48AA:8100:AC1F:EA2A:3813:DADE (talk) 01:29, 3 April 2021 (UTC)
 * Well, if the problem is the use of O. pallantis, you can just change the name to O. moschatus in the table. The point is that O. muschatus was once as dead in Eurasia as the mammoth, and that this could only be remedied with human intervention.--Menah the Great (talk) 05:55, 4 April 2021 (UTC)

Deer mice and Lena horse
From: [https://d1wqtxts1xzle7.cloudfront.net/51637020/j.quaint.2005.03.00920170204-6424-10zuc8k.pdf?1486223685=&response-content-disposition=inline%3B+filename%3DArctic_siberia_refuge_of_the_Mammoth_fau.pdf&Expires=1621479624&Signature=XplYMCVyQ3LvF-GwW5stqu5-S8cVhLQiv4LpElI8KQFnkrFtP7xIjVLBUJpgS1jc9WLWEFFc6D3uZsgbkQf1K4UFd~APbuOdeumZS~C0Y0PqsSyF9gaPUf0p-pdAQEzu9mi-7zMbO~mKuz3RdttcDSWcOXkRe3oya2OLGLaONdAZZooFmgbzf1Ffm--exnTeZMbEohWmYayyOMWZ5ppmKxB5ERLr6krXLURA~ytnDbyrwNR1VooxRhxUaD10OatyZ3XLLFKC5QOBK~be8HzXy1OIcoXoueDzpAX~EjWQWWReiSyxEkVbQRtwtKMvL57UjNK9w34wAfJuNSW1~y3EPQ__&Key-Pair-Id=APKAJLOHF5GGSLRBV4ZA Ainis, A. F., & Vellanoweth, R. L. (2012). Expanding the chronology for the extinct giant island deer mouse (Peromyscus nesodytes) on San Miguel Island, California, USA. The Journal of Island and Coastal Archaeology, 7(1), 146-152.]

"Our results indicate the presence of P. nesodytes at Cave of the Chimneys in varying densities through time, perhaps as a result of differences in sample size, horizontal and vertical variation, duration and extent of human occupation, and use of the shelter by birds of prey, such as the burrowing owl (Athene cunicularia) found in Unit 1 (see Ainis et al. 2011). Densities vary but do not decrease through time, suggesting relatively stable mouse populations at Cave of the Chimneys up to ∼1000 cal BP, raising the possibility that P. nesodytes existed into historic times when overgrazing, habitat destruction, and wind and water erosion transformed much of the island’s ecosystems (Johnson 1972, 1980; Walker 1980)."

BP being before 1950 CE, this means survival until c. 950 CE at least, and that the Peromyscus nesodytes article is the one outdated and incorrect. I may have misread one of the dates in Table 3, however. Mea culpa. Menah the Great (talk) 17:07, 21 May 2021 (UTC)

As for Lena horse, the source for the extinction date is Boeskorov (2006) rather than Orlando (2020). Again, mea culpa for not placing the link next to the date.

[https://d1wqtxts1xzle7.cloudfront.net/51637020/j.quaint.2005.03.00920170204-6424-10zuc8k.pdf?1486223685=&response-content-disposition=inline%3B+filename%3DArctic_siberia_refuge_of_the_Mammoth_fau.pdf&Expires=1621620796&Signature=eYApinFlMA2CByiicvYQjEVHtlRsYx2pCc4WptOp-W64ChNvXfCzcFQtMIsL7~bkHekRsTolDATB4DmSeFit23WlTPQvOKAUjwMP0lfGj692oGu0oKuZiwyJJuZhE8thN3PAC3vKSQik2v7kH4P74v4r-CHJBEKBNsbGgGjmatiKs1eAyWU54YQNcO~AqDdXzgw6QRi42FyfkNfl3yOqGi5DPatvVAjV18jt35cKyf9mFJollaTk4D6oBYLm6dEdkq3w-KPY09QaeGVmgUkMCNwTPQ~26nfVXquJpN0UG4efTBckRYwd20alissErDbDGaPKkEHYxVDrj1UR9o8Ejw__&Key-Pair-Id=APKAJLOHF5GGSLRBV4ZA Boeskorov, G. G. (2006). Arctic Siberia: refuge of the Mammoth fauna in the Holocene. Quaternary international, 142, 119-123.]

"There are several Holocene radiocarbon dates of wild horses from the north of Eastern Siberia. Part of an E. lenensis skeleton found near Chromskaya Gulf at Moichoon Lake, was radiocarbon dated 2310+80 yBP (Lazarev, 1980). And recently there are some data that show that wild horses inhabited the north of Eastern Siberia from 4600 until 2000 yBP (Fig. 1, Table 1). Moreover it is possible that some populations of E. lenensis existed longer in the Extreme North. Horse remains were found in an ancient Eskimo settlement on the Bolshoy Baranov Cape (western Chukotka, eastward from the Kolyma river mouth) dated from the 8th–9th centuries (Vereshchagin and Lazarev, 1977)(Fig. 1)."

I.e. E. lenensis confirmed at Moichoon Lake (Bolshoy Lyakhovsky Island New Siberia) in 440-280 BCE. Per Table 1, Equus sp. (which may be Lena horse or not, so it could be included as unconfirmed) would be 400 BCE to 1 AD in the Taimyr Peninsula; 320-220 BCE in Bolshoy Lyakhovsky Island, and 701-900 AD in Bolshoy Baranov (Cape Baranov?). Menah the Great (talk) 17:39, 21 May 2021 (UTC)
 * I can't access the article that you linked. 2001:1970:48AA:8100:31B0:9B4:2FDB:5F7 (talk) 14:09, 25 May 2021 (UTC)


 * Try this:
 * https://www.sciencedirect.com/science/article/pii/S1040618205000583?casa_token=eODiScB-sNgAAAAA:RpjDapsO89UcbHHUI1JrevhIWO7zb0RyRNDFKxIdL-dCyRKkJ4C06ET-dEuO2iXdWHcQE2dgnA
 * https://scholar.google.es/scholar?hl=es&as_sdt=0%2C5&q=Boeskorov%2C+G.+G.+%282006%29.+Arctic+Siberia%3A+refuge+of+the+Mammoth+fauna+in+the+Holocene.+Quaternary+international%2C+142%2C+119-123.&btnG=

Menah the Great (talk) 18:29, 30 May 2021 (UTC)

Cave Lion Date
Is there a reliable date for the cave/steppe lion's extinction? AFAIK it died out at the tail-end of the Pleistocene (13kya) rather than in the Early Holocene. --2607:FEA8:2923:5600:6DDA:4E4:5874:381E (talk) 17:42, 20 August 2021 (UTC)
 * The date is in the linked source. It's material from Alaska at the tail end of P. spealea's range. It went extinct earlier in Europe and Asia.--Menah the Great (talk) 15:29, 14 September 2021 (UTC)

Dates in general
The last appearance date for Arctodus simus in this article is given as 8995-8845 BCE (10,995-10,845 BP), which looks suspiciously close the uncalibrated radiocarbon date of 10,814 ± 55 C14 BP from Friesenhahn Cave, Texas (actually 12,700 BP / 10,700 BCE calibrated to real years) which is the most reliable last appearance date we have. Does anyone have American megafaunal extinctions at the end of the Pleistocene (Gary Haynes, 2009), who can point me to the specimen used within the book? I can't currently access it, nor does Google help with the original date- this additional specimen could prove to be very useful for the Arctodus article.

A bit of a stretch right now, but may be possible that radiocarbon dates have been posted in this article as real, calibrated dates. SuperTah (talk) 15:42, 25 January 2023 (UTC)