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Leptodus
Taxonomy
Leptodus was named by Kayser (1883) [Sepkoski's age data: P Leon-m P Dora Sepkoski's reference number: 7,936]. Its type is Leptodus richthofeni.
It was assigned to Lyttoniinae by Williams et al. (2000); and to Strophomenida by Sepkoski (2002).
It was assigned to Lyttoniinae by Williams et al. (2000); and to Strophomenida by Sepkoski (2002).
Species
L. cancriniformis, L. deminutus, L. elongatus, L. guadalupensis, L. hemisphaericus, L. hoshanensis, L. huangi, L. kaluzinensis, L. lacuna, L. lamina, L. minor, L. nobilis (syn. Gubleria armenica, Semigublerina ovata, Semigublerina gabata, Semigublerina flabelata), L. oldhaminoides, L. ovatus, L. richthofeni (type species), L. trapezium, L. tumenlingensis, L. wuchangensis, Lyttonia (Digitia), Lyttonia (Imperia), Lyttonia (Irma), Lyttonia (Pirgula), Lyttonia (Prisca), Lyttonia (Stita), Lyttonia (Vincia), Poikilosakos tongluensis, Spinolyttonia arakeljani
Species lacking formal opinion data
Synonyms
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Synonymy list
| Year | Name and author |
|---|---|
| 1883 | Leptodus Kayser p. 161 |
| 1883 | Lyttonia Waagen p. 396 |
| 1916 | Oldhamina (Lyttonia) Fredericks |
| 1964 | Spinolyttonia Sarycheva |
| 1990 | Poikilosakos tongluensis Liang p. 222 figs. Pl 40, fig 8 |
| 1990 | Leptodus lamina Liang p. 224 figs. Pl 40, fig 12 |
| 1990 | Juxoldhamina Liang p. 235 |
| 2000 | Leptodus Williams et al. p. 631 |
| 2002 | Leptodus Sepkoski |
| 2002 | Lyttonia Sepkoski |
| 2002 | Spinolyttonia Sepkoski |
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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.
G. †Leptodus Kayser 1883
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†Leptodus cancriniformis Liao 1980
†Leptodus deminutus Liao 1980
†Leptodus elongatus Jin and Hu 1982
†Leptodus guadalupensis Girty 1908
†Leptodus hemisphaericus Lee and Gu 1980
†Leptodus hoshanensis Huang 1936
†Leptodus huangi Shen et al. 1992
†Leptodus kaluzinensis Licharew and Kotlyar 1978
†Leptodus lacuna Liang 1990
†Leptodus minor Lee and Gu 1980
†Leptodus nobilis Waagen 1883
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Invalid names: Gubleria armenica Sarycheva 1964 [synonym], Semigublerina flabelata Liang 1990 [synonym], Semigublerina gabata Liang 1990 [synonym], Semigublerina ovata Liang 1990 [synonym]
†Leptodus oldhaminoides Kotlyar 1989
†Leptodus ovatus Lee and Gu 1980
†Leptodus richthofeni Kayser 1883
†Leptodus trapezium Termier et al. 1974
†Leptodus tumenlingensis Lee and Gu 1980
†Leptodus wuchangensis Lee and Gu 1980
Invalid names: Juxoldhamina Liang 1990 [synonym], Leptodus lamina Liang 1990 [nomen dubium], Lyttonia Waagen 1883 [synonym], Poikilosakos tongluensis Liang 1990 [nomen dubium], Spinolyttonia Sarycheva 1964 [synonym]
Diagnosis
No diagnoses are available
Measurements
| part | N | mean | minimum | maximum | median | s.d. | |
|---|---|---|---|---|---|---|---|
| valve height | 2 | 10.6 | 5.80 | 19.6 | 12.7 | 9.72 |
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| Source: subo = suborder, c = class, p = phylum | |||||
| References: Williams et al. 2000, Aberhan et al. 2004 | |||||
Age range: base of the Sakmarian to the top of the Cenomanian or 293.52000 to 93.90000 Ma
Collections (394 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Gzhelian - Cisuralian | USA (California) | L. sp. (143626) | |
| Sakmarian | China (Guangxi) | L. sp., L. nobilis (134321) | |
| Artinskian | Afghanistan | L. sp. (94962) | |
| Artinskian - Kungurian | USA (Texas) | Lyttonia americana (151270) | |
| Kungurian | China (Sichuan) | L. sp. (153926 153928) | |
| Kungurian | USA (Texas) | L. sp. (122229) Lyttonia americana (108395 108399 113193 113195 113216 121457 149773 149777 149778 149782 149787 149860 149863 149931 149934 149983 149997 150244 150245 150251 150259 150556 150557 150562 150666 150810 150842 150847 151233 151236 151269 151271) | |
| Kungurian | China (Hunan) | L. sp. (100061) | |
| Kungurian | China (Xizang) | L. richthofeni (118916) | |
| Kungurian | USA (Oregon) | L. sp. 1 (40978) | |
| Guadalupian | USA (California) | L. nobilis (132331) | |
| Roadian | Thailand | L. sp. (40868) | |
| Roadian | Japan | L. nobilis (75527 118924) | |
| Roadian | Thailand (Trang) | L. sp. (40896) | |
| Roadian | Mexico (Coahuila) | Lyttonia americana (150138 150563) | |
| Roadian | Ukraine | L. richthofeni (102500) | |
| Roadian | Croatia | L. nobilis (62243 62290 62291 75510 118083) | |
| Roadian | USA (Texas) | Lyttonia americana (113197 113206 113211 149827 149941 149945 150106 150107 150253 150260 150609 150610 150661 150782 150864 150866 151052 151243 151272 151275) | |
| Roadian | China (Jiangxi) | L. sp. (100098) | |
| Roadian | Slovenia | L. nobilis (36241) | |
| Roadian | China (Sichuan) | L. sp. (153930) | |
| Roadian | Afghanistan | L. sp. (88402) L. trapezium (81407) | |
| Roadian - Wordian | Malaysia | L. sp. (40411) | |
| Roadian - Wordian | USA (Texas) | Lyttonia americana (149944 150118 150662 150795) | |
| Wordian | China (Nei Mongol) | L. nobilis (111136) Lyttonia nobilis (109091 109179) | |
| Wordian | Slovenia | L. nobilis (60184) | |
| Wordian | Tunisia | L. sp. (107066) L. sp., L. nobilis (107074) | |
| Wordian | Italy | Lyttonia nobilis, Lyttonia pedicula, Lyttonia asymmetrica, Lyttonia fasciculata, Lyttonia princeps, Lyttonia paupera, Lyttonia biolata, Lyttonia angustata (233340) | |
| Wordian | Armenia | L. oldhaminoides (97394 110847) L. richthofeni (97393 113617 113725) | |
| Wordian | Japan (Miyagi) | L. nobilis (149789) | |
| Wordian | Japan | L. nobilis (118969 118974 163389 179343 179349 179350 179353) | |
| Wordian | Iran | L. sp. (114073 118136 134812) | |
| Wordian | USA (Texas) | Lyttonia americana (108393 150000 150108 150254 150255 150261 150659 150802 151273 151274) | |
| Wordian | Pakistan | L. sp. (50725 50771) | |
| Wordian | Azerbaijan | L. nobilis (94935) L. richthofeni (94931) | |
| Wordian | China (Qinghai) | L. nobilis (103591) | |
| Wordian | Tunisia (Madanin) | L. nobilis (42091) | |
| Wordian | Thailand (Ratchaburi) | L. sp. (40954 116879) | |
| Wordian - Capitanian | China (Jilin) | L. nobilis, Paraleptodus tumenlingensis, Paraleptodus ovatus, Paraleptodus hemisphaericus (111171) | |
| Wordian - Capitanian | Tunisia (Madanin) | L. nobilis (42092 42093 42094) | |
| Wordian - Capitanian | China (Nei Mongol) | L. minor (111177) L. nobilis (111145) | |
| Wordian - Capitanian | Pakistan | Lyttonia nobilis (127031) | |
| Wordian - Capitanian | China (Heilongjiang) | L. nobilis (61879 61882) Paraleptodus wuchangensis (111166) | |
| Wordian - Capitanian | Cambodia | Lyttonia nobilis (125049) | |
| Capitanian | Russian Federation | L. kaluzinensis (89326 112483 112561) L. nobilis (82329 109820) L. richthofeni (86015 112553) | |
| Capitanian | China (Chongqing) | L. nobilis (131992) | |
| Capitanian | China (Sichuan) | L. sp. (153938 153939) | |
| Capitanian | Pakistan | Lyttonia nobilis (125883 127033) | |
| Capitanian | Malaysia | L. nobilis (105035) L. richthofeni (105036) L. sp. (42720) | |
| Capitanian | China (Zhejiang) | L. lamina, Collemataria lacuna, Poikilosakos dzhulfensis, Collemataria armenica, Semigublerina sp. 1 (111932) L. nobilis (95519) L. nobilis, Poikilosakos tongluensis, Semigublerina flabelata, Semigublerina sp. 1 (111933) Semigublerina gabata, Semigublerina ovata, Semigublerina sp. 1 (111934) | |
| Capitanian | Japan | L. sp. (106722) | |
| Capitanian | Armenia | L. nobilis (97381) | |
| Capitanian | Iran | L. nobilis (81124) L. richthofeni (118227) | |
| Capitanian | Malaysia (Pahang) | L. catenata, L. sp. (42726) L. catenata, L. sp., L. nobilis (42733) L. sp. (42716 42717 42719 42722 42727) L. sp., L. nobilis (42725) | |
| Capitanian | USA (Texas) | L. guadalupensis (108812) Lyttonia americana (151276) | |
| Wuchiapingian | Iran (Abadeh) | L. sp., L. nobilis (63894) | |
| Wuchiapingian | China (Sichuan) | L. cancriniformis (156809) L. nobilis (156800 156803 156807 156808) L. sp. (148473 156804 156805) | |
| Wuchiapingian | China (Jiangxi) | L. elongatus (102118 120031 120043) L. richthofeni (111074) L. sp. (101623) | |
| Wuchiapingian | China (Hunan) | L. nobilis (105462 109856) L. sp. (117499) | |
| Wuchiapingian | China (Yunnan) | L. nobilis (62457) | |
| Wuchiapingian | China (Guangdong) | L. nobilis (88898 121121) L. sp. (109781 229438) L. sp., L. lacuna (211805 228449) | |
| Wuchiapingian | Pakistan | L. nobilis (109322) Lyttonia nobilis (119518 119550 119646 119843 119849 119852 125893 125897 125899 125906 125913 125925 126265 126272 126279 126343 126344 126458 126459 126738 126895 126984 126994 127025 127027 127030) Lyttonia richthofeni (119548) Lyttonia sp. (127006) | |
| Wuchiapingian | Japan | L. nobilis (110418) L. richthofeni (117840) L. sp. (97204) | |
| Wuchiapingian | Indonesia | Lyttonia sp. (132787) | |
| Wuchiapingian | Russian Federation (Primorye) | L. nobilis, L. deminutus (63899) | |
| Wuchiapingian | China (Guizhou) | L. deminutus (86601 111996) L. nobilis (111997 112001 112002 112004 112105) L. sp. (197494 197497) Lyttonia nobilis (110324 110326 111054 111070) Lyttonia richthofeni (110972 136245 139289) Lyttonia sp. (111064) | |
| Wuchiapingian | Iran | L. sp. (63892) | |
| Wuchiapingian | Greece | L. sp. (64171 64176) | |
| Wuchiapingian | China (Chongqing) | L. cancriniformis (156834) L. nobilis (121031 156827 156873 156875 156876) L. nobilis, L. deminutus (156867) L. richthofeni (156844) L. sp. (156835 156843) Lyttonia nobilis (111075) Lyttonia sp. (110405) | |
| Wuchiapingian | China (Xizang) | Lyttonia nobilis (89203) Lyttonia sp. (230327) | |
| Wuchiapingian | Australia (Northern Territory) | L. nobilis (74749 101219 126977) | |
| Wuchiapingian | China (Guangxi) | L. hoshanensis (112363) L. nobilis (105443) L. sp. (50027 95514) Lyttonia sp. (136253) | |
| Wuchiapingian | Azerbaijan | L. nobilis (110595 110679 110681 110701 110717) L. nobilis, L. richthofeni (116754) L. richthofeni (95630 110676 110678 116759 145461) Lyttonia sp. n. (132463) | |
| Wuchiapingian | India | Lyttonia nobilis (46291) | |
| Wuchiapingian | Armenia | Gubleria armenica (82063) Gubleria armenica, Spinolyttonia arakeljani (116774) L. nobilis (110746 110792) L. nobilis, Gubleria armenica (109486 110749 110770) L. nobilis, L. richthofeni, Gubleria armenica, Spinolyttonia arakeljani (88709) L. sp. (110747) Spinolyttonia arakeljani (145462) | |
| Wuchiapingian | China (Hubei) | L. sp. (149230) | |
| Lopingian | China (Jiangxi) | L. richthofeni (109628) | |
| Lopingian | India | Lyttonia nobilis (230328 230849) | |
| Lopingian | China (Chongqing) | Lyttonia richthofeni (139307) | |
| Lopingian | USA (Montana) | L. sp. (11273 95024) | |
| Wuchiapingian - Changhsingian | Pakistan | Lyttonia nobilis (127014) | |
| Wuchiapingian - Changhsingian | China (Hubei) | L. richthofeni (105951) | |
| Wuchiapingian - Changhsingian | Iran (Manzadaran) | L. nobilis, L. richthofeni (107831) | |
| Changhsingian | Thailand (Khao Doi Pha Phlung) | L. sp. (8103) | |
| Changhsingian | China (Sichuan) | L. deminutus (95285) L. nobilis (103467) L. sp. (36221 73823 95282 95301 95599 149080) | |
| Changhsingian | China (Anhui) | L. sp. (136860) | |
| Changhsingian | China (Guizhou) | L. cancriniformis (112132 112349) L. deminutus (112091 117465 197013 197014 197030 197042) L. nobilis (51424 98224 117464 117480) L. nobilis, L. deminutus (117483) L. nobilis, L. richthofeni, L. deminutus, L. cancriniformis (117481) L. sp. (98222 105173 136840 145685 149293 149298 151135 197493) L. sp., L. deminutus (197041) | |
| Changhsingian | China (Chongqing) | L. cancriniformis (156847) L. deminutus (94972 94985) L. deminutus, L. cancriniformis (156860) L. nobilis (148550 156857) L. nobilis, L. deminutus (156862) L. nobilis, L. richthofeni, L. deminutus (94984) L. nobilis, L. richthofeni, L. deminutus, L. cancriniformis (156863) L. sp. (94978 94987 156853 156885) | |
| Changhsingian | China (Qinghai) | L. nobilis (89319) | |
| Changhsingian | Tajikistan | L. sp. (96811 109466 109471 109477) | |
| Changhsingian | Pakistan | Lyttonia nobilis (126887) Lyttonia sp. (126934) | |
| Changhsingian | Pakistan (Northwest Frontier) | Lyttonia sp. (41557) | |
| Changhsingian | Pakistan (Punjab) | Lyttonia sp. (41562 41564) | |
| Changhsingian | China (Guangxi) | L. nobilis (112431 112433 149204 149205 149207 149218 206103 206152 206155 206156) | |
| Changhsingian | China (Hunan) | L. cancriniformis (105918) L. deminutus (111899) L. nobilis (111904) L. sp. (31420 120799) | |
| Changhsingian | China (Fujian) | L. nobilis (51430 121428) L. sp. (121429 148572) | |
| Changhsingian | China (Xizang) | L. nobilis (187558) | |
| Changhsingian | Iran | L. nobilis (125579 125602 125638 125639 125660) L. sp. (63893) | |
| Changhsingian | China (Guangdong) | L. richthofeni (109783) | |
| Changhsingian | China (Zhejiang) | L. nobilis (105210) L. nobilis, L. deminutus (43787) L. sp. (111644) | |
| Cenomanian | USA (Kansas) | Prisca sp. (32610 32613 32692 32696) | |
| Cenomanian - Cretaceous | USA (Kansas) | Prisca sp. (32655) |