Editing Turnstone (section)

==Species==
{{Species table |genus= Arenaria |authority-name=Brisson |authority-year=1760 |species-count=two|no-note=y|narrow-percent=75}}

{{Species table/row
|name=[[ruddy turnstone]] |binomial=[[Arenaria interpres]]
|image=File:Arenaria interpres (habitus).jpg|image-size=180px |image-alt=|image-caption= Breeding plumage
|image2 =File:Arenaria interpres SK.jpg|image2-caption=Non-Breeding plumage
|authority-name=Linnaeus |authority-year=1758 |authority-not-original=yes
|range= circumpolar distribution, and is a very long distance migrant, wintering on coasts as far south as [[South Africa]] and [[Australia]].
|range-image=File:Arenaria interpres map.svg
|range-image-size=180px
|size=It is one of the species to which the ''Agreement on the Conservation of African-Eurasian Migratory Waterbirds'' ([[AEWA]]) applies. In breeding [[plumage]], this is a showy bird, with a black-and-white head, chestnut back, white underparts and red legs. The drabber winter plumage is basically brown above and white below. 
|habitat=On coasts almost everywhere in the world
|hunting=This is a generally tame bird and is an opportunist feeder. Unlike most waders, it will scavenge, and has a phenomenal list of recorded food items, including human corpses and [[coconut]]. The call is a staccato ''tuck- tuck- tuck''.
|iucn-status=NT
|population=
|direction=
|subspecies=
}}

{{Species table/row
|name=[[black turnstone]] |binomial=[[Arenaria melanocephala]]
|image=File:Arenaria melanocephala1.jpg|image-size=180px |image-alt=
|authority-name=Vigors |authority-year=1829 |authority-not-original=yes
|range= Breeding in western [[Alaska]], and wintering mainly on the [[Pacific Ocean|Pacific]] coast of the [[United States]].
|range-image=File:Arenaria melanocephala map.svg
|range-image-size=180px
|size=Black upperparts and chest, and white below.
|habitat=
|hunting=
|iucn-status= LC
|population=
|direction=
|subspecies=
}}

{{Species table/end}}


There exists a [[fossil]] bone, a [[Anatomical terms of location#Proximal and distal|distal]] piece of [[tarsometatarsus]] found in the [[Edson Beds]] of [[Sherman County, Kansas]]. Dating from the mid-[[Blancan]] some 4-3 million years ago, it appears to be from a calidriid somewhat similar to a [[pectoral sandpiper]], but has some traits reminiscent of turnstones.<ref name=Wetmore/> Depending on which traits are [[apomorph]]ic and [[plesiomorph]]ic, it may be an ancestral representative of either lineage.