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Taxonomy
Arca (Arca) was named by Linnaeus (1758). It is extant. 
It was assigned to Arca by Woodring (1925), Grant, IV and Gale (1931), Oostingh (1935), Reinhart (1937), Reinhart (1943), Hall (1964), Olsson (1967), Hertlein and Grant (1972), Adegoke (1977), Dockery (1982), Moore (1983), Gliozzi and Malatesta (1983), Squires (1991), Pacaud and Le Renard (1995), Frassinetti and Covacevich (1999), Squires (1999), Matsubara (2002), Mandic and Steininger (2003).
It was assigned to Arca by Woodring (1925), Grant, IV and Gale (1931), Oostingh (1935), Reinhart (1937), Reinhart (1943), Hall (1964), Olsson (1967), Hertlein and Grant (1972), Adegoke (1977), Dockery (1982), Moore (1983), Gliozzi and Malatesta (1983), Squires (1991), Pacaud and Le Renard (1995), Frassinetti and Covacevich (1999), Squires (1999), Matsubara (2002), Mandic and Steininger (2003).
  Subtaxa
  
Arca (Arca) accra, Arca (Arca) filewiczi, Arca (Arca) givensi, Arca (Arca) gonzalesi, Arca (Arca) hatchetigbeensis, Arca (Arca) hawleyi, Arca (Arca) kelirensis, Arca (Arca) lomasdesamba, Arca (Arca) menengtengana, Arca (Arca) patagonica, Arca (Arca) petropolitana, Arca (Arca) santamariensis, Arca (Arca) sisquocensis, Arca (Arca) subcalcarea, Arca (Arca) suspecta, Arca (Arca) williamsoni, Arca (Arca) yaquensis, Arca turonica  
  Species lacking formal opinion data
  
Arca acompsa, Arca aequitorialis, Arca afra, Arca afra, Arca afra, Arca aquisgranensis, Arca aresta, Arca articulata, Arca aspera, Arca aubersonensis, Arca autissiodorensis, Arca bellonii, Arca bladensis, Arca bravoensis, Arca brongniarti, Arca buenavistana, Arca callipleura, Arca campichiana, Arca cancellata, Arca carinata, Arca carteroni, Arca charanensis, Arca chaudharii, Arca chavani, Arca chemnitzii, Arca compacta, Arca complanata, Arca consobrina, Arca cornueliana, Arca cossmanni, Arca cottaldina, Arca cruciata, Arca cymadoce, Arca dalmatina, Arca decipiens, Arca dilatata, Arca dodona, Arca dubisiensis, Arca dupiniana, Arca elegans, Arca enfaulensis, Arca ernae, Arca fennemai, Arca ficalhoi, Arca fruthi, Arca gabrielis, Arca gabrielis, Arca gambiensis, Arca girondica, Arca glabra, Arca golfoyaquensis, Arca grammatodonta, Arca grandis, Arca granulatoradiata, Arca grundensis, Arca gunteri, Arca gurgitis, Arca halmyrus, Arca halmyrus, Arca helblingii, Arca hugardiana, Arca hypomela, Arca idonea, Arca idonea, Arca illota, Arca imbricata, Arca imbricata, Arca impolita, Arca improcera, Arca improcera, Arca inequilateralis, Arca initiator, Arca jaccardi, Arca juliana, Arca juliania, Arca junghuhni, Arca keideli, Arca kendrickensis, Arca knechteli, Arca larkini, Arca latidentata, Arca latidentata, Arca limatella, Arca lineata, Arca macnairyensis, Arca marrullensis, Arca martindalensis, Arca maruellensis, Arca marullensis, Arca megumbona, Arca melaviensis, Arca metastrebla, Arca mikkula, Arca mikkula, Arca millvillensis, Arca montensis, Arca montensis, Arca montereyensis, Arca moreana, Arca morrumbenenesis, Arca multidentata, Arca mytiloides, Arca nana, Arca neocomiensis, Arca nivea, Arca nivea, Arca nodosa, Arca noe, Arca obesa, Arca obliqua, Arca obliquata, Arca pakistanica, Arca paratina, Arca pencki, Arca pergracilis, Arca pilula, Arca pilula, Arca prolata, Arca propearesta, Arca propinqua, Arca pulla, Arca puntaensis, Arca quindecemradiata, Arca raulini, Arca retciulata, Arca retractata, Arca rhomboidalis, Arca rostellata, Arca rutimeyeri, Arca sakondryensis, Arca sanctacrucis, Arca sanctae-crucis, Arca scapha, Arca schweinfirthi, Arca schweinfurthi, Arca securiculata, Arca securis, Arca shinanoensis, Arca singewaldi, Arca singewaldi, Arca sinjdica, Arca spencer, Arca speyeri, Arca staminata, Arca staminata, Arca stillicidum, Arca strangulata, Arca subcrenata, Arca subnana, Arca subrotracta, Arca subtijidamarensis, Arca subvelata, Arca tailleburgensis, Arca tashiroi, Arca tashiroi, Arca tauroclathrata, Arca tenuidentata, Arca texata, Arca thalia, Arca toroensis, Arca toroensis, Arca transversa, Arca triasina, Arca triboleti, Arca trigeri, Arca umbonaria, Arca umbonata, Arca uniformis, Arca uropygmelana, Arca veatchi, Arca vellicata, Arca vetula, Arca villersensis, Arca waltonia, Arca yaquensis, Arca zapotalensis, Arca zapotalensis, Arca zebra, Arca zebra, Arca zenophoricola, Arca zorritosensis  
Synonymy list
| Year | Name and author | 
|---|---|
| 1758 | Arca (Arca) Linnaeus | 
| 1925 | Arca (Arca) Woodring p. 28 | 
| 1931 | Arca (Arca) Grant, IV and Gale p. 137 | 
| 1935 | Arca (Arca) Oostingh p. 131 | 
| 1937 | Arca (Arca) Reinhart p. 181 | 
| 1943 | Arca (Arca) Reinhart p. 14 | 
| 1964 | Arca (Arca) Hall, Jr. p. 87 | 
| 1967 | Arca (Arca) Olsson p. 6 | 
| 1972 | Arca (Arca) Hertlein and Grant p. 153 | 
| 1977 | Arca (Arca) Adegoke p. 218 | 
| 1982 | Arca (Arca) Dockery p. 29 | 
| 1983 | Arca (Arca) Gliozzi and Malatesta p. 88 | 
| 1983 | Arca (Arca) Moore p. A31 | 
| 1991 | Arca (Arca) Squires p. 68 | 
| 1995 | Arca (Arca) Pacaud and Le Renard p. 175 | 
| 1999 | Arca (Arca) Frassinetti and Covacevich p. 17 | 
| 1999 | Arca (Arca) Squires p. 23 | 
| 2002 | Arca (Arca) Matsubara p. 134 | 
| 2003 | Arca (Arca) Mandic and Steininger p. 274 | 
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If no rank is listed, the taxon is considered an unranked clade in modern classifications. Ranks may be repeated or presented in the wrong order because authors working on different parts of the classification may disagree about how to rank taxa.
Subg. Arca (Arca) Linnaeus 1758
    show all | hide all
   †Arca (Arca) accra Cox 1952
   †Arca (Arca) filewiczi Squires 1991
   †Arca (Arca) givensi Squires 1991
   †Arca (Arca) gonzalesi Gliozzi and Malatesta 1983
   †Arca (Arca) hatchetigbeensis Harris 1897
   †Arca (Arca) hawleyi Reinhart 1943
   †Arca (Arca) kelirensis Martin 1916
   †Arca (Arca) lomasdesamba Maury 1917
   †Arca (Arca) menengtengana Martin 1910
   †Arca (Arca) patagonica Ihering 1897
   †Arca (Arca) petropolitana Stenzel and Krause 1957
   †Arca (Arca) santamariensis Reinhart 1937
   †Arca (Arca) sisquocensis Reinhart 1937
   †Arca (Arca) subcalcarea Oostingh 1941
   †Arca (Arca) suspecta Olsson 1964
   †Arca (Arca) williamsoni Olsson 1967
   †Arca (Arca) yaquensis Maury 1917
   †Arca (Arca) yaquensis berryi Woodring 1925
   †Arca turonica Dujardin 1837
  
Diagnosis
No diagnoses are available
Measurements
| part | N | mean | |||||
|---|---|---|---|---|---|---|---|
| height | 1 | 14.0 | 
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| Source: g = genus, f = family | |||||
| References: Mikkelsen and Bieler 2008, Aberhan et al. 2004 | |||||
Age range: base of the Early/Lower Tithonian to the top of the Middle Pleistocene or 149.20000 to 0.12900 Ma
Collections (72 total)
| Time interval | Ma | Country or state | Original ID and collection number | 
|---|---|---|---|
| Early/Lower Tithonian | Germany | Arca pencki, Arca fruthi (34608) | |
| Early/Lower Tithonian | Germany (Bavaria) | Arca fruthi (57157) Arca pencki (57791) | |
| Selandian | Nigeria | Arca accra (7791) | |
| Ypresian | USA (Alabama) | Arca hatchetigbeensis (80785 80792 90039 90143 90609 194354) | |
| Ypresian | USA (California) | Arca filewiczi (207312) Arca givensi (207314) | |
| Lutetian - Bartonian | USA (Texas) | Arca petropolitana (41430) | |
| Bartonian | USA (Texas) | Arca petropolitana (90656) Arca sp. (205480 205485) | |
| Chattian - Aquitanian | USA (Florida) | Arca grammatodonta (60985 61100) Arca kendrickensis (61072) | |
| Late/Upper Oligocene - Early/Lower Miocene | Argentina (Santa Cruz) | Arca patagonica (48068) | |
| Early/Lower Miocene | Sao Tome and Principe | Arca turoniensis (241058) | |
| Early/Lower Miocene | Chile | Arca patagonica (78425) | |
| Early/Lower Miocene | Argentina | Arca patagonica (71539 71540 71542 185967) | |
| Burdigalian | Austria | Arca grundensis (77402) | |
| Langhian | Dominican Republic | Arca sp. (74959) Arca yaquensis (74958) | |
| Middle Miocene | Indonesia | Arca kelirensis (70081) | |
| Middle Miocene | Fiji | Arca sp. (68294) | |
| Serravallian | Cyprus | Arca turonica (71880) | |
| Serravallian | Greece | Arca turonica, Arca turoniensis (72305) | |
| Tortonian | Greece | Arca turonica, Arca turoniensis (72310) | |
| Tortonian | Dominican Republic | Arca yaquensis (58816 58817) | |
| Tortonian | Cyprus | Arca turonica (71883 71885) | |
| Late/Upper Miocene | Dominican Republic | Arca lomasdesamba (58870) Arca yaquensis (58869) | |
| Late/Upper Miocene | Haiti | Arca stillicidum (60111) | |
| Late/Upper Miocene | Indonesia | Arca sp., Arca subcalcarea (70083) | |
| Tortonian - Piacenzian | USA (California) | Arca santamariensis (188305) | |
| Messinian | USA (California) | Arca santamariensis (195031) | |
| Messinian - Zanclean | Dominican Republic | Arca sp. (75039) | |
| Early/Lower Pliocene | Indonesia (Java) | Arca menengtengana (45344) | |
| Early/Lower Pliocene | Panama (Bocas) | Arca sp. (135839) | |
| Early/Lower Pliocene | Ecuador (Manabi) | Arca suspecta (60771 60772) | |
| Pliocene | USA (California) | Arca sisquocensis, Arca santamariensis (122281) | |
| Pliocene | Indonesia | Arca menengtengana (84523 84544 84546) | |
| Late/Upper Pliocene | Jamaica | Arca sp. (69089 69090 69094) | |
| Late/Upper Pliocene | Indonesia | Arca menengtengana (70084) | |
| Late/Upper Pliocene | USA (Florida) | Arca williamsoni (79761) | |
| Piacenzian | USA (California) | Arca sisquocensis (122752 189542) | |
| Piacenzian | Panama (Bocas) | Arca sp. (79983 135885) | |
| Late/Upper Pliocene - Early/Lower Pleistocene | USA (California) | Arca sisquocensis (217010) | |
| Late/Upper Pliocene - Pleistocene | USA (California) | Arca sisquocensis (36867) | |
| Gelasian | USA (California) | Arca sisquocensis (189765 189766) Arca sisquocensis, Arca santamariensis (189768) | |
| Quaternary | USA (California) | Arca sisquocensis (37940 37947) | |
| Middle Pleistocene | USA (California) | Arca sisquocensis (203113 203118 207886) |