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Megalodontoidea

Bivalvia - Megalodontida

Synonymy list
YearName and author
1853Megalodontacea Morris
1965Megalodontacea Newell p. 19
1980Megalodontacea Vokes p. 193
1999Megalodontoidea Yancey and Stanley p. 5
2009Megalodontoidea Nevesskaja
2011Megalodontoidea Carter et al.

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RankNameAuthor
kingdomAnimalia()
Bilateria
EubilateriaAx 1987
Protostomia
Spiralia
superphylumLophotrochozoa
phylumMollusca
classBivalvia
Eubivalvia
subclassAutobranchia(Groblen 1894)
RankNameAuthor
infraclassHeteroconchia(Gray 1854)
CardiomorphiFerussac 1822
CardioniFerussac 1822
CardiidiaFerussac 1822
CardiataFerussac 1822
superorderCardiiformiiFerussac 1822
orderMegalodontidaStarobogatov 1992
superfamilyMegalodontoidea(Morris 1853)
superfamilyMegalodontoidea(Morris 1853)

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.

Superfm. †Megalodontoidea Morris 1853
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Fm. †Ceratomyopsidae Cox 1964
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G. †Ceratomyopsis Cossmann 1915
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Ceratomyopsis striata d'Orbigny 1822
Ceratomyopsis undulata Morris and Lycett 1855
Invalid names: Ceromyopsis de Loriol 1897 [replaced]
G. †Tellurimya Cox 1964
Fm. †Dicerocardiidae Kutassy 1934
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G. †Carinocardia Termier and Verriez 1974
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Carinocardia atalantiensis Termier and Verriez 1974
G. †Cornucardia Koken 1913
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Cornucardia hornigii Bittner 1901
Cornucardia timorensis Krumbeck 1924
Invalid names: Craspedodon Bittner 1901 [replaced]
G. †Dicerocardium Stoppani 1856
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Dicerocardium curionii Stoppani 1865
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Invalid names: Hemicardium wulfeni von Hauer 1875 [synonym]
Dicerocardium himalayense Stoliczka 1869
Dicerocardium incisum Frech 1912
Dicerocardium jani Stoppani 1865
Dicerocardium ragazzonii Stoppani 1865
G. †Physocardia Wöhrmann 1894
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Physocardia carintiaca Boué 1835
Physocardia ogilviae Wöhrmann 1894
Physocardia verae Frech 1912
G. †Platycardia Beringer 1949
G. †Praedicerocardium Friesenbichler et al. 2019
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Praedicerocardium vetulus Friesenbichler et al. 2019
G. †Pseudisocardia Douvillé 1912
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G. †Rostrocardia Freneix 1972
Fm. †Megalodontidae Morris 1853
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G. †Ampezzania Allasinaz and Zardini 1977
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Ampezzania subovata Allasinaz and Zardini 1977
Ampezzania zardinii Allasinaz and Zardini 1977
G. †Conchodon Stoppani 1865
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Conchodon infraliasicus Schafhäutl 1863
Conchodon infraliasicus pyrenaeus Mensink and Tichy 1977
Invalid names: Lycodus Schafhäutl 1863 [replaced]
G. †Cumularia
G. †Megalodon Sowerby 1827
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Megalodon abbreviatus von Schlotheim 1820
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Invalid names: Megalodon cucullatus Sowerby 1827 [synonym]
Megalodon cassianus Hoernes 1895
Megalodon hungaricum Kutassy 1933
Megalodon klipsteinii Bittner 1895
Megalodon pumilus Gümbel 1862
Megalodon rostratiforme Krumbeck 1913
Megalodon yanceyi Nakazawa 2002
Invalid names: Megalodus Goldfuss 1836 [nomen vanum]
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Invalid names: Megalomus Hall 1852 [synonym]
G. †Neomegalodon Guembel 1864
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Neomegalodon boeckhi Hoernes 1898
Neomegalodon cornutus Yao et al. 2007
Neomegalodon hoernesi Frech 1904
Neomegalodon stoppanii Frech 1912
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Invalid names: Megalodus columbella Guembel 1900 [replaced]
Neomegalodon triqueter Wulfen 1793
Invalid names: Gemmellarodus di Stefano 1912 [synonym], Rossiodus Allasinaz 1965 [synonym]
G. †Pachyrisma Morris and Lycett 1850
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Durga trigonalis Böhm 1884
Subg. †Pachyrisma (Pachymegalodon) Gümbel 1862
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Pachymegalodus nimassicus Krumbeck 1923
Pachyrisma grande Morris and Lycett 1850
Pachyrisma rimosum Münster 1841
Pachyrisma rostratum Münster 1841
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Invalid names: Isocardia minuta Klipstein 1843 [synonym]
G. †Paramegalodus Cox 1969
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Paramegalodus prolatus Allasinaz 1977
Paramegalodus travenanzensis Allasinaz 1977
G. †Pomarangina Diener 1908
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Pomarangina haydeni Diener 1908
G. †Protodiceras Böhm 1892
G. †Quemocuomegalodon Yao et al. 2003
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Quemocuomegalodon circularis Yao et al. 2007
Quemocuomegalodon longitatus Yao et al. 2003
Quemocuomegalodon orientus Yao et al. 2003
G. †Rhaetomegalodon Végh-Neubrandt 1969
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Rhaetomegalodon bajotensis Végh-Neubrandt 1969
G. †Triadomegalodon Vegh-Neubrandt 1974
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Triadomegalodon damesi Hoernes 1880
Triadomegalodon tofanae Hoernes 1900
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Invalid names: Megalodus gryphoides Guembel 1900 [synonym]
Fm. †Wallowaconchidae Yancey and Stanley 1999
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G. †Wallowaconcha Yancey and Stanley 1999
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Wallowaconcha raylenea Yancey and Stanley 1999
Invalid names: Pachyrismatidae Scarlato and Starobogatov 1979 [empty]
Diagnosis
No diagnoses are available
Measurements
No measurements are available
Composition: aragonitesuperf
Locomotion: stationarysuperf
Life habit: semi-infaunalsuperf
Diet: suspension feedersuperf
Vision: blindc
Created: 2007-09-07 08:30:28
Modified: 2007-09-07 10:30:28
Source: superf = superfamily, c = class
References: Aberhan et al. 2004, Kiessling 2003

Age range: base of the Niagaran to the top of the Maastrichtian or 438.00000 to 66.00000 Ma

Collections (358 total)

Oldest occurrences

Time interval Ma Country or state Original ID and collection number
Silurian443.8 - 419.2USA (Alaska) Megalomus sp. (111898)
Telychian438.5 - 433.4USA (Iowa) Megalomoidea sp. (26763)
Niagaran438.0 - 421.3USA (Indiana) Megalomus canadensis (22818)
Sheinwoodian433.4 - 430.5Sweden (Gotland) Megalomus sp. (13597)
Sheinwoodian433.4 - 430.5Russian Federation Megalomus sp. (23498 23499)
Wenlock433.4 - 427.4Russian Federation Megalomoidea gothlandicus (24776)
Wenlock433.4 - 427.4Russian Federation (Yakutiya) Megalomus sp. (79400)
Wenlock - Ludlow433.4 - 423.0USA (Iowa) Megalomoidea sp. (25018)
Homerian - Gorstian430.5 - 425.6Sweden (Gotland) Megalomus gotlandicus (13602)
Ludfordian425.6 - 423.0Sweden (Gotland) Megalomus gotlandicus (13616)

Youngest occurrences

Time interval Ma Country or state PBDB collection number
Early/Lower Tithonian150.8 - 145.0Germany (Bavaria) Pachyrisma latum (57791) Pachyrisma sp. (57157)
Late/Upper Tithonian150.8 - 145.0Portugal Ceratomyopsis striata (8166)
Middle Albian109.0 - 105.3Egypt Megalocardia simplex (98326)
Late/Upper Albian105.3 - 99.6Egypt Megalocardia simplex (98327)
Early/Lower Cenomanian99.6 - 93.5Egypt Rostrocardia papieri (114872 114873)
Late/Upper Cenomanian99.6 - 93.5Egypt Rostrocardia papieri (114793 114794 114795)
Late/Upper Santonian85.8 - 83.5Austria Ambocardia planidorsata (114268)
Maastrichtian72.1 - 66.0Germany Ambocardia corculum, Ambocardia sp. (1349)
Maastrichtian72.1 - 66.0Egypt Ambocardia chargehensis (1363)
Maastrichtian72.1 - 66.0Austria Ambocardia planidorsata (1379)