Talk:Great American Interchange

message: I was kind of surprised the first sentence said: 
: ......in which land and freshwater animal faunas migrated from Central America to South America and vice versa, as the .....
instead of:
: ......in which land and freshwater animal faunas migrated from Central America and North America, to South America and vice versa, as the .....
any takers on this thought: ?....From the Ariz-Desert...--Mmcannis 17:02, 8 December 2006 (UTC)
thread_title: The first sentence

message: Below are the Central American species of South American origin referenced in the article:
=== Central American opossum species ===
*Derby's woolly opossum (Caluromys derbianus) 
*Water opossum (Chironectes minimus) 
*Common opossum (Didelphis marsupialis) 
*Virginia opossum (Didelphis virginiana) 
*Mexican mouse opossum (Marmosa mexicana) 
*Robinson's mouse opossum (Marmosa robinsoni) 
*Panama slender opossum (Marmosops invictus) 
*Brown four-eyed opossum (Metachirus nudicaudatus) 
*Alston's mouse opossum (Micoureus alstoni) 
*Sepia short-tailed opossum (Monodelphis adusta) 
*Gray four-eyed opossum (Philander opossum)
*Grayish mouse opossum (Tlacuatzin canescens)  translation of Spanish article
=== Central American caviomorph rodent species ===
*Rothschild's porcupine (Coendou rothschildi)
*Mexican hairy dwarf porcupine (Sphiggurus mexicanus)
*Lesser capybara (Hydrochoerus hydrochaeris) 
*Coiban agouti (Dasyprocta coibae) 
*Mexican agouti (Dasyprocta mexicana) 
*Central American agouti (Dasyprocta punctata) 
*Ruatan Island agouti (Dasyprocta ruatanica) 
*Lowland paca (Cuniculus paca)
*Rufous soft-furred spiny-rat (Diplomys labilis) 
*Armored rat (Hoplomys gymnurus) 
*Tome's spiny-rat (Proechimys semispinosus)
=== Central American platyrrhine monkey species ===
*Coiba Island howler (Alouatta coibensis) – may be a subspecies of Alouatta palliata
*Mantled howler (Alouatta palliata)
*Guatemalan black howler (Alouatta pigra)
*Panamanian night monkey (Aotus zonalis) – may be a subspecies of gray-bellied night monkey (Aotus lemurinus)
*Black-headed spider monkey (Ateles fusciceps)
*Geoffroy's spider monkey (Ateles geoffroyi) 
*White-headed capuchin (Cebus capucinus)
*Geoffroy's tamarin (Saguinus geoffroyi)
*Cottontop tamarin (Saguinus oedipus) – possibly recently extirpated in Central America
*Central American squirrel monkey (Saimiri oerstedii)
=== Central American xenarthran species ===
*Nine-banded armadillo (Dasypus novemcinctus) 
*Northern naked-tailed armadillo (Cabassous centralis) 
*Pygmy three-toed sloth (Bradypus pygmaeus)
*Brown-throated sloth (Bradypus variegatus)
*Hoffmann's two-toed sloth (Choloepus hoffmanni)
*Silky anteater (Cyclopes didactylus)
*Giant anteater (Myrmecophaga tridactyla)
*Northern tamandua (Tamandua mexicana)
WolfmanSF 09:42, 5 November 2007 (UTC)
thread_title:  Central American species listings 

message: *Nine-banded armadillo (Dasypus novemcinctus) 
*Northern naked-tailed armadillo (Cabassous centralis) 
*Pygmy three-toed sloth (Bradypus pygmaeus)
*Brown-throated sloth (Bradypus variegatus)
*Hoffmann's two-toed sloth (Choloepus hoffmanni)
*Silky anteater (Cyclopes didactylus)
*Giant anteater (Myrmecophaga tridactyla)
*Northern tamandua (Tamandua mexicana)
WolfmanSF 09:42, 5 November 2007 (UTC)
thread_title:  Central American [[xenarthra]]n species 

message: There are some improvements that could be made to the lists of successful invaders. The section headings refer to species but many of the listed organisms are genera or even higher taxanomic groupings. I think that higher taxonomic groups are more usefully listed than individual species as genera might have moved up or down and speciated; thus the species didn't successfully invade, but its genera did. Sabine's Sunbird  talk 05:06, 22 July 2008 (UTC)
replies: text: You are correct, the section headings were inappropriate. Thanks for pointing that out. Your point that the list does not distinguish between species that actually walked across the isthmus and those resulting from diversification in the new land mass is also well taken. I agree that it is generally better to list genera rather than species; however, I think that in cases where an invasive genus is only represented by a few "invasive" species it is useful to list those, especially when there are many more species that stayed behind (as otherwise it might not be easy to quickly identify the "invasive" members of the genus). WolfmanSF (talk) 04:00, 17 August 2008 (UTC)
thread_title:  the lists of invaders 

message: Is there any possibility that a section of the interchanging of different genera of plants could be added, or is the research in this area too scant?  —Preceding unsigned comment added by 189.58.8.200 (talk) 17:52, 19 November 2008 (UTC)
replies: text: I'm not familiar with the subject, but my impression is that tropical plants tended to migrate mainly northward in the interchange. If you come across any good sources I'd be happy to hear about them. WolfmanSF (talk) 09:39, 21 November 2008 (UTC)
replies: text: An example of a plant genus that probably migrated from South to Central America around the time of the interchange is Roupala. WolfmanSF (talk) 08:28, 18 January 2013 (UTC)
thread_title:  Possibility of plant genera inclusion 

message: The Discovery Channel program Mega Beasts mentions a type of wolf called Edward's wolves, which modern wolves descended from. I can't find anything out about them, but the program says that they were resident in North America with Saber-toothed cats when the terror birds migrated north. They eventually out-competed both.--Auric (talk) 17:29, 8 January 2010 (UTC)
replies: text: You are referring to Canis edwardii. It is quite possible that Canis edwardii and other North American predators out-competed terror birds, but the reason(s) for the eventual extinction of the terror birds in North America after their initially successful invasion remain speculative. One could imagine that terror birds initially had an edge in being a new type of predator that North American herbivores had not been exposed to, but that eventually their prey were able to adapt. However, Smilodon outlived Canis edwardii, becoming extinct only when its prey died out in the Quaternary extinction event. So, it looks like saber-tooths in the Americas were only out-competed by humans. WolfmanSF (talk) 01:21, 9 January 2010 (UTC)

text: According to this phylogeny, coyotes and golden jackals are descended from Canis edwardii. I'm not sure how well this is accepted. WolfmanSF (talk) 01:29, 9 January 2010 (UTC)
thread_title:  Edward's Wolves? 

message: Does anyone have any insight into the unusual pattern of recent pageviews for the article? WolfmanSF (talk) 07:39, 21 February 2017 (UTC)
replies: text: Probably part of a botnet that is monitoring this page for a particular change in the text, which--when detected--it will use as a trigger to activate. Bueller 007 (talk) 13:24, 5 October 2017 (UTC)
replies: text: What would be the point of that? WolfmanSF (talk) 17:46, 5 October 2017 (UTC)
thread_title:  Recent pageviews 

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thread_title:  External links modified 

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thread_title:  External links modified (January 2018) 

message: Did Arctotherium angustidens extend into Central America? Sarsath3 (talk) 17:58, 16 December 2019 (UTC)
replies: text: We have one recent report, cited in the article, of Arctotherium wingei in the Yucatán Peninsula. WolfmanSF (talk) 21:53, 16 December 2019 (UTC)
thread_title:  ''Arctotherium angustidens'' in Central America? 

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thread_title:  A Commons file used on this page or its Wikidata item has been nominated for deletion 

message: Plants too participated in the biotic interchange, e.g. Quercus (oaks) moved south to Colombia. We should probably have a section on plants here. Chiswick Chap (talk) 09:27, 5 October 2023 (UTC)
thread_title:  Plants!