Taxa beginning with A
448 names, each with a page of its own for what the Paleobiology Database records about it. The list is what this site has looked up and cached, not everything the fossil record holds.
- Abdounia
- Abdounia beaugei
- Abdounia minutissima
- Abelisauridae
- Abichites stoyanowi
- Abra
- Abra aequalis
- Abra nitens
- Absarokius abbotti
- Acanthinucella spirata
- Acanthoceras
- Acanthoceras rhotomagense
- Acanthocladia
- Acanthocladia anceps
- Acanthocladia guadalupensis
- Acanthoclema
- Acanthodii
- Acanthodiscus
- Acanthohoplites
- Acanthomorphata
- Acanthopecten
- Acanthopecten coloradoensis
- Acanthophyllum
- Acanthopleuroceras maugenesti
- Acanthothiris spinosa
- Acastella
- Aceratherium
- Acernaspis
- Acernaspis orestes
- Acervularia
- Acidaspis
- Acidiphorus
- Acila (Truncacila) castrensis
- Acila (Truncacila) conradi
- Acila (Truncacila) decisa
- Acila (Truncacila) demessa
- Acila (Truncacila) shumardi
- Acmaea mitra
- Acmarhachis typicalis
- Acodus
- Acodus similaris
- Acosarina
- Acosarina mesoplatys
- Acosarina minuta
- Acratia
- Acratia subfusiformis
- Acritohippus isonesus
- Acritosia peculiaris
- Acrochordiceras carolinae
- Acrochordiceras hyatti
- Acrocoelites
- Acropoma serrata
- Acropora
- Acropora cervicornis
- Acropora humilis
- Acropora hyacinthus
- Acropora palmata
- Acrosalenia
- Acrospirifer
- Acroteuthis
- Acrothele
- Acrotreta
- Acteocina
- Acteocina canaliculata
- Acteocina culcitella
- Acteon
- Acteon (Acteon)
- Acteon idoneus
- Acteonella
- Actinaraea
- Actinastrea crassoramosa
- Actinoceras
- Actinocrinites
- Actinopteria
- Actinopteria boydi
- Actinopterygii
- Actinostreon
- Actinostreon gregarea
- Actinostreon marshi
- Actinostroma
- Acutostrea idriaensis
- Acutostrea plumosa
- Adcrocuta eximia
- Adelocoenia limbata
- Adelograptus
- Adetognathus
- Adocus
- Adolfia
- Aegiromena
- Aegoceras maculatum
- Aelurodon ferox
- Aelurodon taxoides
- Aenocyon dirus
- Aenona eufaulensis
- Aepycamelus
- Aepyceros melampus
- Aequipecten
- Aetholicopalla adnata
- Aetobatus
- Aetomylaeus dixoni
- Aetosauria
- Afiacyathus
- Agaricia agaricites
- Agaricia grahamae
- Agaricia lamarcki
- Agaricia undata
- Agaricocrinus
- Agaronia
- Agaronia alabamensis
- Agathiceras
- Agathiceras mediterraneum
- Agathiceras uralicum
- Agelesia triagonalis
- Agerina
- Agerostrea falcata
- Agerostrea mesenterica
- Agerostrea ungulatus
- Agetolites
- Agyrekocyathus
- Ajacicyathus
- Albanerpeton
- Albanerpetontidae
- Albertechinus devonicus
- Alcelaphini
- Alcelaphus buselaphus
- Aldanella attleborensis
- Aleocharinae
- Alia carinata
- Alispira
- Alispiriferella lita
- Allanella tullius
- Allocricetus
- Allognathosuchus
- Allohippus stenonis
- Allonnia
- Allophaiomys pliocaenicus
- Allosaurus
- Alphadon
- Alvania
- Alveinus minutus
- Alveinus rotundus
- Alveolitella
- Alveolites
- Alveolites suborbicularis
- Alveolitidae
- Amalda atrebatum
- Amalda obsoleta
- Amaltheus
- Amaltheus margaritatus
- Amaltheus stokesi
- Ambigostrea
- Ambikella ovata
- Amblysiphonella
- Ambocoelia
- Ambocoelia umbonata
- Ambonychia
- Ambystoma tigrinum
- Amecephalus arrojosensis
- Amiidae
- Ammagnostus laiwuensis
- Ammonitida
- Ammonoidea
- Amoeboceras
- Amorphognathus
- Amorphognathus ordovicicus
- Amphibia
- Amphicyon
- Amphicyonidae
- Amphilichas
- Amphilichas minganensis
- Amphipora
- Amphipora moravica
- Amphipora ramosa
- Amphiscapha catilloides
- Amphissa versicolor
- Amphissites
- Amphistrophia
- Amplexiphyllum
- Amplexizaphrentis
- Amplexograptus
- Amplexopora
- Amplexus
- Ampullina
- Ampullina pseudoalveata
- Ampullospira
- Ampyx
- Amuletum
- Amusium
- Amusium (Propeamussium) alabamense
- Amydrotaxis
- Anabarella australis
- Anabarites trisulcatus
- Anachis (Costoanachis)
- Anadara
- Anadara (Larkinia) transversa
- Anadara (Rasia)
- Anadara (Rasia) dariensis
- Anadara (Rasia) fissicosta
- Anadara trilineata
- Anagaudryceras sacya
- Anahamulina
- Anancus arvernensis
- Anas
- Anas crecca
- Anas platyrhynchos
- Anaschisma browni
- Anasibirites kingianus
- Anasibirites multiformis
- Anastrophia
- Anathyris
- Anatidae
- Anatinae
- Anazyga
- Anazyga recurvirostra
- Anchitherium aurelianense
- Anchorhynchia sarciniformis
- Anchura
- Ancilla
- Ancilla staminea
- Ancillotoechia
- Ancillotoechia gutta
- Ancyrodella
- Ancyrodella curvata
- Ancyrodella nodosa
- Ancyrodelloides
- Ancyrognathus
- Androgynoceras (Oistoceras) figulinum
- Anemonaria pseudohorrida
- Anemonaria sublaevis
- Angelina hyeronimi
- Anguinae
- Anguis fragilis
- Angulaticeras
- Angustothyris angustaeformis
- Anidanthus
- Anidanthus cessnockensis
- Anidanthus springsurensis
- Anisocardia
- Anisoceras
- Anisomyon
- Anisonchus sectorius
- Anisopleurella
- Ankylosauria
- Ankylosauridae
- Annuliconcha dentata
- Anomalofusus
- Anomalorthis
- Anomia
- Anomia argentaria
- Anomia ornata
- Anomia peruviana
- Anomia simplex
- Anomia vaquerosensis
- Anomoepus
- Anomoepus scambus
- Anostylostroma
- Anous stolidus
- Anoxypristis
- Ansella jemtlandica
- Anserinae
- Antalis
- Anteridocus swallovianus
- Anthozoa
- Anthracoceras paucilobum
- Anthracospirifer
- Anthracospirifer leidyi
- Anthracospirifer occiduus
- Antiacodon pygmaeus
- Anticostia lata
- Antigonambonites planus
- Antiguastrea
- Antiguastrea lucasiana
- Antillocaprina
- Antillophos
- Antillophos (Antillophos)
- Antillophos candeanus
- Antilocapridae
- Antiquatonia
- Antiquatonia portlockianus
- Antirhynchonella
- Antisabia panamensis
- Anura
- Aparchitella
- Aparchites
- Apatemys
- Apatognathus varians
- Apatokephalus
- Apatosaurus
- Aperispirifer lethamensis
- Aphelaspis walcotti
- Apheliscus
- Apheliscus chydaeus
- Aphelognathus
- Aphelops
- Aphelops megalodus
- Apheoorthis
- Aphera islacolonis
- Aphodius
- Aphrodina
- Aphrodina (Tikia)
- Apodemus
- Apodemus sylvaticus
- Apomatella ingrica
- Aporrhais
- Aporrhais (Aporrhais)
- Appendispinograptus supernus
- Apricardia
- Apringia diptycha
- Apringia paolii
- Aquila chrysaetos
- Arabatia bihinensis
- Arachnolasma
- Araneae
- Araxathyris
- Araxathyris protea
- Araxathyris sinensis
- Araxathyris timorensis
- Arca
- Arcestes
- Archaeocidaris
- Archaeocyatha
- Archaeocyathus
- Archaeogastropoda
- Archaeolaginae
- Archaeolamna kopingensis
- Archaeolynthus
- Archaeopharetra
- Archaeoscyphia
- Archiasterella
- Archiasterella pentactina
- Archimedes
- Archimylacridae
- Architectonica
- Architectonica (Stellaxis) alveatum
- Architectonica acuta
- Architectonica nobilis
- Archosauria
- Archosauriformes
- Arcinella arcinella
- Arcomya
- Arcomytilus
- Arcopagia
- Arcopsis adamsi
- Arctica
- Arctinurus
- Arctitreta kempei
- Arctocephalus townsendi
- Arctoceras blomstrandi
- Arctoceras septentrionale
- Arctodontomys wilsoni
- Arenahippus aemulor
- Arenahippus pernix
- Arfia opisthotoma
- Arfia shoshoniensis
- Arganodus
- Argopecten
- Argopecten eccentricus
- Argopecten invalidus
- Argopecten thetidis
- Argopecten ventricosus
- Arieticeras
- Arieticeras algovianum
- Arietites
- Armenoceras
- Arnioceras
- Arnioceras ceratitoides
- Arrhoges
- Arthropoda
- Arthrorhachis
- Arthrorhachis tarda
- Artiodactyla
- Arvicola
- Asaphellus
- Asaphellus catamarcensis
- Asaphidae
- Asaphus
- Asaphus (Asaphus) lepidurus
- Asaphus (Asaphus) raniceps
- Askepasma toddense
- Aspelundia
- Aspelundia fluegeli
- Aspenites acutus
- Aspideretoides
- Aspidoceras
- Astarte
- Astarte (Astarte) radiata
- Astarte borealis
- Astarte montagui
- Astartella
- Astartella concentrica
- Astartila intrepida
- Asthenophyllum
- Asthenotoma
- Astraeomorpha confusa
- Astraeomorpha crassisepta
- Astrea curta
- Ataphrus
- Atelodictyon
- Athleta
- Athleta (Volutocorbis)
- Athleta (Volutospina)
- Athleta petrosa
- Athyrella hybrida
- Athyris
- Athyris concentrica
- Athyris spiriferoides
- Athyrisina
- Atilia
- Atlantoraja cecilae
- Atractites
- Atractopyge
- Atreta
- Atreta intusstriata
- Atrimitra idae
- Atrina
- Atrypa
- Atrypa nieczlawiensis
- Atrypa reticularis
- Atrypina
- Atrypoidea
- Aturia aturi
- Aturia cubaensis
- Aucellina
- Aucklandirhynchia aucklandica
- Aulacella
- Aulacodiscus septus
- Aulacognathus bullatus
- Aulacothyris resupinata
- Aulocystis
- Aulophyllum
- Aulopora
- Auloporidae
- Aurila
- Aurila cicatricosa
- Australocoelia
- Australoneilo gracilis
- Australopithecus afarensis
- Australospirifer
- Austrirhynchia cornigera
- Austrotindaria antiqua
- Austrotindaria svalbardensis
- Avellana
- Aves
- Aviculopecten
- Aviculopecten arctisulcatus
- Avonia
- Azhdarchidae
- Azygograptus