Formations beginning with A
259 names, each with a page of its own for the fossils recorded from it. The list is what this site has looked up and cached, not every formation the record holds.
- A
- Aalter
- Abadeh
- Abadia
- Abanico
- Abbas
- Abeih
- Abenaki
- Aberdeen Lake
- Aberhan Pliensbach
- Aberhan Sinemur
- Abisinia
- Abo
- Abrahamskraal
- Abrakurrie Limestone
- Abu Durba
- Abu Qada
- Acanthopyge
- Acanthopyge Limestone
- Achdorf
- Acheshbok
- Acoite
- Acredale
- Acton Scott
- Adam Mudstone
- Adamantina
- Adila
- Admiral
- Adnet
- Adu-Asa
- Advance
- Adze
- Aftenstjernesø
- Afyon
- AG4
- Agardfjellet
- Agardhfjellet
- Agatdal
- Agglomeratic Slate
- Agidyl
- Agoudim
- Agrio
- Agua Blanca
- Agua de la Piedra
- Água de Madeiros
- Agua Nueva
- Agueguexquite
- Aguja
- Ahbach
- Ahlen
- Ahrdorf
- Aiduna
- Aïn el Guettar
- Ainoura
- Aisemont
- Aisol
- Aït Athmane
- Aitamir
- Ajax Limestone
- Akasaka
- Akdombak
- Akdurug
- Aketo
- Akhura
- Akkolka
- Akpatok
- Akrabou
- Akrech
- Aksala
- Aksucay
- Aktas
- Aktash
- Aktasty
- Al Baniyah
- Al Jil
- Al Rose
- Alachua
- Alacran Mountain
- Alai Beds
- Alajuela
- Alam
- Alamosa
- Alan Mountain Limestone
- Alazán
- Alba
- Alcântara
- Alcobaca
- Alcobaça
- Alcolea
- Aldabra Limestone
- Aleman
- Aleqatsiaq Fjord
- Alexandria
- Alfambra
- Alfred Shale
- Alhajuela
- Ali Bashi
- Alikper
- Alisitos
- Alkali Canyon
- Allandale
- Allaru
- Allegheny
- Allen
- Allen Bay
- Allenby
- Allgäu
- Allingham
- Allt Ddu
- Almejas
- Almonacid de la Cuba
- Alston
- Altamira
- Altamont
- Alticola
- Alturas
- Aluginskaya
- Alum
- Alum Shale
- Aluvere
- Alvitas
- Alvy Creek
- Alykaevskaya
- Alzey
- Amadjuak
- Amain
- Amaltheenton
- Amanak
- Amanakskaya
- Amaninskaya
- Amaral
- Amarkan
- Amb
- Ambarimaninga
- Ameghino
- Ameke
- Ameki
- Amerboh
- Amergou
- American Falls Lake Bed E
- Amherstburg
- Amka
- Amouslek
- Ampthill Clay
- Amsden
- Anacacho Limestone
- Anacleto
- Anastasia
- Anchor
- Andalhuala
- Andamooka Limestone
- Anderdon Limestone
- Anderken
- Andesitas Huancache
- Angir
- Angola
- Angostura
- Anguilla
- Angulatensandstein
- Anji
- Annona
- Anoual
- Anse a Pierre-Loiselle
- Anse Cascon
- Anse Maranda
- Anshun
- Antalo
- Antalo Limestone
- Antelope
- Antelope Valley
- Antenor Navarro
- Antigua
- Antimonio
- Antlers
- Antonios
- Aoki
- Aorangi Mine
- Aouinet Ouenine II
- Apostoli
- Appanoose
- Aquia
- Aral
- Arapien Shale
- Arauz
- Araya
- Arcadia
- Archer City
- Arcillas de Morella
- Arcturus
- Ardanatz Sandstone
- Ardath
- Ardwell Farm
- Arén
- Arenal d'en Castell
- Arenas de Huelva
- Argilas de Aveiro
- Argile de Villerville
- Argiles a Lopha gregarea
- Argiles d'lignite du Soissonnais
- Argiles de Teguentour
- Argille Azzurre
- Arguis
- Argun
- Aridal
- Arikaree
- Ärina
- Arkadelphia
- Arkadelphia marl
- Arkona Shale
- Arline
- Armorique
- Armuelles
- Arnager Greensand
- Arnager Limestone
- Arnestad
- Arnheim
- Arpa
- Arqov
- Arrojos
- Arroyo
- Arroyo Chasicó
- Arroyo Malo
- Arshanto
- Artemisa
- Artoles
- Aruküla
- Aruma
- Arundel Clay
- Ascot
- Asencio
- Ash Hollow
- Ashawaq
- Ashawq
- Ashfield Shale
- Ashizawa
- Ashley
- Ashley Mudstone
- Ashville
- Assistance
- Astoria
- Atafaitafa
- Atahoc
- Atco
- Atherfield Clay
- Atoka
- Atsunai
- Attawapiskat
- Auernig
- Augusta Mountain
- Auleliai
- Aurora Limestone
- Ausinskaya
- Austin Chalk
- Avenal
- Avon Park
- Aycross
- Aylmer
- Azilé
- Aztec Siltstone