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Discinisca
Taxonomy
Discinisca was named by Gray (1840) [Sepkoski's age data: J l R Sepkoski's reference number: 538]. It is extant.
It was assigned to Disciniidae by Martin (1904), Frassinetti and Covacevich (1999), Williams et al. (2000); to Acrotretida by Sepkoski (2002); and to Discinidae by Hertlein and Grant IV (1944), Pérez et al. (2023).
It was assigned to Disciniidae by Martin (1904), Frassinetti and Covacevich (1999), Williams et al. (2000); to Acrotretida by Sepkoski (2002); and to Discinidae by Hertlein and Grant IV (1944), Pérez et al. (2023).
Species
Species lacking formal opinion data
Synonymy list
Year | Name and author |
---|---|
1840 | Discinisca Gray |
1904 | Discinisca Martin p. 402 |
1944 | Discinisca Hertlein and Grant IV p. 23 |
1999 | Discinisca Frassinetti and Covacevich p. 14 |
2000 | Discinisca Williams et al. p. 86 |
2002 | Discinisca Sepkoski |
2023 | Discinisca Pérez et al. p. 206 |
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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. Discinisca Gray 1840
show all | hide all
†Discinisca circularis Gabb 1864
†Discinisca conviva Gerassimov 1955
†Discinisca cumingii Broderip 1833
†Discinisca cumingii hannibali Hertlein and Grant IV 1944
†Discinisca fallens Wood 1874
†Discinisca holdeni Tate 1867
†Discinisca infraoolithica Rolliere 1829
†Discinisca jenkinsi Hertlein and Grant IV 1944
†Discinisca kamikatetuensis Yabe and Hatai 1935
Discinisca laevis Sowerby 1822
Discinisca lamellosa Broderip 1834
Discinisca lamellosa sensu Hondt 1976
†Discinisca loeli Hertlein and Grant IV 1944
†Discinisca lugubris Conrad 1834
†Discinisca messii Pérez et al. 2023
†Discinisca oregonensis Dall 1909
†Discinisca perrini Hertlein and Grant IV 1944
†Discinisca porvenir Pérez et al. 2023
†Discinisca scutellum Dreger 1889
†Discinisca steiningeri Radwanska and Radwanski 1989
Discinisca strigata Broderip 1834
†Discinisca yaroslavensis Gerassimov 1955
Diagnosis
Reference | Diagnosis | |
---|---|---|
D. E. Pérez et al. 2023 | Shell dorsibiconvex to convexconcave, subcircular; ornamentation of fine growth lines that may become lamellose peripherally, with or without fine ribs; ventral valve with large depressed area around pedicle track, internally with small triangular median septum extending posteriorly from aprex on to listrium; lophophore in recent forms spirolophous (from williams et al., 2000: 86) |
Measurements
part | N | mean | |||||
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valve height | 1 | 4.50 |
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Source: f = family, c = class, p = phylum, uc = unranked clade | |||||
References: Aberhan et al. 2004, Hendy 2009, Nesnidal et al. 2013 |
Age range
Maximum range based only on fossils: base of the Emsian to the top of the Middle Pleistocene or 410.62000 to 0.12900 Ma
Minimum age of oldest fossil (stem group age): 387.95 Ma
Minimum age of oldest fossil (stem group age): 387.95 Ma
Collections (120 total)
Time interval | Ma | Country or state | Original ID and collection number |
---|---|---|---|
Emsian - Eifelian | Ghana | D. sp. (35605) | |
Spathian | USA (Utah) | D. sp. (62972) | |
Anisian | Austria | Discina discoides (136965) | |
Pelsonian | Hungary | D. sp. (40617) | |
Ladinian | Germany | D. sp. (45422) | |
Ladinian | Germany (Baden-Württemberg) | D. discoides (66100) | |
Tuvalian | Hungary | D. calymene (23869) | |
Rhaetian | United Kingdom (Yorkshire) | D. sp. (219461) | |
Hettangian | Greenland | D. sp. (162102) | |
Hettangian | United Kingdom (Gloucestershire) | D. sp. (204158) | |
Early/Lower Sinemurian | United Kingdom (England) | D. holdeni (29235 29237) | |
Early/Lower Pliensbachian | United Kingdom (Gloucestershire) | D. holdeni (204129) | |
Ibex | United Kingdom (Dorset) | D. holdeni (159163) | |
Jamesoni | Greenland | D. sp. (161976 162271) | |
Jamesoni | United Kingdom (Dorset) | D. holdeni (159799) | |
Pliensbachian | United Kingdom (Gloucestershire) | D. holdeni (204124 204126) | |
Pliensbachian | Greenland | D. sp. (162088) | |
Early/Lower Toarcian | United Kingdom | D. papyracea (213988 213990 213998 214001) | |
Early/Lower Toarcian | Portugal (Coimbra) | D. sp. (211064) | |
Middle Toarcian | United Kingdom | D. papyracea (214002 214003 214005 214006) | |
Bifrons | United Kingdom (England) | D. infraoolithica (90460) | |
Aalenian - Toarcian | Norway | D. spisbergensis (169538) | |
Early/Lower Bajocian | Chile (Atacama) | D. sp. (221833) | |
Early/Lower Tithonian | Russian Federation (Ulyanovsk) | D. conviva (169909) D. yaroslavensis (169915) | |
Cretaceous | Chile (Ovalle) | D. sp. (222422) | |
Barremian | Chile (Huasco) | D. sp. (223283) | |
Early/Lower Barremian | Chile (Copiapó) | D. sp. (223016) | |
Cenomanian | USA (Arizona) | D. sp. (3086) | |
Cenomanian | USA (Colorado) | D. sp. (2735 2737 2790 2791) | |
Late/Upper Cenomanian | USA (Arizona) | D. sp. (53487) | |
Early/Lower Turonian | USA (Arizona) | D. sp. (3208 3210 3212 3213 3214 3215 3216 3217) | |
Turonian | USA (Colorado) | D. sp. (2801 3071 3072) | |
Waipawan | New Zealand | D. sp. (52447) | |
Lutetian | USA (Washington) | D. sp. (198636) | |
Bartonian | USA (California) | D. sp. (52803 52817) | |
Rupelian | Germany | D. fallens (233115 233116 233118 233119 233120) | |
Chattian | USA (California) | D. sp. (52418) | |
Chattian | Germany | D. fallens (233318 233319 233320 233321 233322 233323) | |
Late/Upper Oligocene | Austria | D. steiningeri (163576) | |
Early/Lower Miocene | Argentina (Chubut) | D. messii (203130) D. porvenir, D. messii (234532) | |
Early/Lower Miocene | Argentina | D. porvenir (201438) | |
Early/Lower Miocene | USA (New Jersey) | D. lugubris (59335 59337 59364) | |
Early/Lower Miocene | USA (California) | D. sp. (238140 238191 238239 238241) | |
Early/Lower Miocene | Chile | D. sp. (78428) | |
Miocene | USA (California) | D. cumingi (214405) D. sp. (195081) | |
Burdigalian | Argentina (Chubut) | D. porvenir (45886) | |
MN 5 | Austria | Discina scutellum (153687) | |
Badenian | Belgium | D. fallens (208831) | |
Badenian | Poland | D. sp. (233126 233127 233128 233129) | |
Serravallian | USA (California) | D. cumingii (37542) | |
Serravallian | USA (Florida) | D. aldrichi (42875) D. lugubris (80018) | |
Serravallian | USA (Maryland) | D. lugubris (79104 79105 79106 79107 79110 79111 79352 79353) D. lugubrius (79115) | |
Tortonian | Belgium | D. fallens (217346) | |
Messinian | USA (California) | D. cumingii (194804 195031) | |
Early/Lower Pliocene | USA (Oregon) | D. oregonensis (71152) | |
Early/Lower Pliocene | USA (Florida) | D. multilineata (79962) | |
Zanclean | Italy | D. sp. (55759) | |
Zanclean | USA (South Carolina) | D. lugubris (60940) | |
Late/Upper Pliocene | Peru | D. sp. (89179 89180 89181) | |
Late/Upper Pliocene | USA (Virginia) | D. lugubris (78262 78269 78270 79246) | |
Piacenzian | Italy (Reggio Emilia) | D. sp. (119001) | |
Gelasian | USA (California) | D. cumingii (189768) | |
Middle Pleistocene | Japan | D. kamikatetuensis (190826) |