Editing Pre-Nectarian (section)

== Impact basins ==
{|
|+ '''Lunar impact basins'''<br/>as categorized by Wilhelms ''et al''. (1987)<ref>
{{cite book
 |last1=Wilhelms |first1=Don
 |last2=McCauley |first2=John
 |last3=Trask    |first3=Newell
 |year=1987
 |title=The geologic history of the Moon
 |series=Professional Paper
 |page=148
 |publisher=[[US Geological Survey]]
 |doi=10.3133/pp1348 |doi-access=free
 |url=http://pubs.er.usgs.gov/publication/pp1348
}}
</ref>
|- style="text-align:center;vertical-align:top;"
|rowspan="3"|
{| class="wikitable sortable" style="vertical-align:center;text-align:left;"
|- style="text-align:center;background:#EAECF0;border:1px solid black;"
|rowspan="2" style="vertical-align:center;"| '''Basin name'''
|style="vertical-align:bottom;"| '''Diameter'''
|style="vertical-align:bottom;"| '''Age-<br/>group'''
|- style="vertical-align:center;text-align:center;background:#EAECF0;"
| (km)
| (nr.)
|-
| [[Oceanus Procellarum|''Procellarum'']]
|align="right"| 3,200
|rowspan="2" align="center"| 1
|-
| [[South Pole–Aitken basin|South Pole-Aitken]]
|align="right"| 2,500
<!-- | 1 -->
|-
| ''[[Tsiolkovskiy (crater)|Tsiolkovskiy]]-[[Stark (crater)|Stark]]''
|align="right"| 700
|rowspan="9" align="center"| 2
|-
| ''[[Grissom (crater)|Grissom]]-[[White (crater)|White]]''
|align="right"| 600
<!-- | 2 -->
|-
| [[Mare Insularum|''Insularum'']]
|align="right"| 600
<!-- | 2 -->
|-
| [[Mare Marginis|''Marginis'']]
|align="right"| 580
<!-- | 2 -->
|-
| ''[[Flamsteed (crater)|Flamsteed]]-[[Billy (crater)|Billy]]''
|align="right"| 570
<!-- | 2 -->
|-
| ''[[Balmer (crater)|Balmer]]-[[Kapteyn (crater)|Kapteyn]]''
|align="right"| 550
<!-- | 2 -->
|-
| ''[[Werner (crater)|Werner]]-[[Airy (lunar crater)|Airy]]''
|align="right"| 500
<!-- | 2 -->
|-
| ''[[Pingré (crater)|Pingré]]-[[Hausen (crater)|Hausen]]''
|align="right"| 300
<!-- | 2 -->
|-
| ''[[Al-Khwarizmi (crater)|Al-Khwarizmi]] / [[King (crater)|King]]''
|align="right"| 590
<!-- | 2 -->
|-
| [[Mare Fecunditatis|Fecunditatis]]
|align="right"| 990
|rowspan="6" align="center"| 3
|-
| [[Mare Australe|Australe]]
|align="right"| 880
<!-- | 3 -->
|-
| [[Mare Tranquillitatis|Tranquillitatis]]
|align="right"| 800
<!-- | 3 -->
|-
| ''[[Mutus (crater)|Mutus]]-[[Vlacq (crater)|Vlacq]]''
|align="right"| 700
<!-- | 3 -->
|-
| [[Mare Nubium|Nubium]]
|align="right"| 690
<!-- | 3 -->
|-
| [[Lomonosov (lunar crater)|Lomonosov]]-[[Fleming (crater)|Fleming]]
|align="right"| 620
<!-- | 3 -->
|- style="text-align:center;vertical-align:top;"
|}
|
{| class="wikitable sortable" style="vertical-align:center;text-align:left;"
|- style="text-align:center;background:#EAECF0;border:1px solid black;"
|rowspan="2" style="vertical-align:center;"| '''Basin name'''
|style="vertical-align:bottom;"| '''Diameter'''
|style="vertical-align:bottom;"| '''Age-<br/>group'''
|- style="vertical-align:center;text-align:center;background:#EAECF0;"
| (km)
| (nr.)
|-
| [[Mare Ingenii|Ingenii]]
|align="right"| 650
|rowspan="3" align="center"| 4
|-
| [[Poincaré (crater)|Poincaré]]
|align="right"| 340
<!-- | 4  -->
|-
| [[Keeler (lunar crater)|Keeler]]-[[Heaviside (lunar crater)|Heaviside]]
|align="right"| 780
<!-- | 4  -->
|-
| [[Coulomb-Sarton Basin|Coulomb-Sarton]]
|align="right"| 530
|rowspan="2" align="center"| 5
|-
| [[Mare Smythii|Smythii]]
|align="right"| 840
<!-- | 5  -->
|-
| [[Lorentz (crater)|Lorentz]]
|align="right"| 360
|align="center"| 6
|-
| ''[[Amundsen (crater)|Amundsen]]-[[Ganswindt (crater)|Ganswindt]]''
|align="right"| 355
|rowspan="4" align="center"| 7
|-
| [[Schiller-Zucchius Basin|Schiller-Zucchius]]
|align="right"| 325
<!-- | 7  -->
|-
| [[Planck (crater)|Planck]]
|align="right"| 325
<!-- | 7  -->
|-
| [[Birkhoff (crater)|Birkhoff]]
|align="right"| 330
<!-- | 7  -->
|-
| [[Freundlich-Sharonov Basin|Freundlich-Sharonov]]
|align="right"| 600
|align="center"| 8
|-
| [[Grimaldi (crater)|Grimaldi]]
|align="right"| 430
|rowspan="2" align="center"| 9
|-
| [[Apollo (crater)|Apollo]]
|align="right"| 505
<!-- | 9  -->
|}
|-
|style="text-align:left;vertical-align:top;padding-left: 2em;"| {{small|For basins with no article, the two prominent <br/>craters' names are separately linked to their <br/>respective articles.}}
|-
|style="text-align:left;vertical-align:bottom;padding-left: 2em;"| {{small|Names of proposed basins are ''italicized''.<br/>&nbsp;}}
|}