PBDB Taxon

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Morphology	Ecology and taphonomy	External Literature Search	Age range and collections

Discohelix

Gastropoda - Discohelicidae

Taxonomy

Discohelix was named by Dunker (1847) [Sepkoski's age data: Tr Ladi K Maes Sepkoski's reference number: 797,914].

It was reranked as Euomphalus (Discohelix) by Delpey (1941).

It was assigned to Euomphalus by Delpey (1941); to Euomphalidae by Ulrich and Scofield (1897), Knight et al. (1960), Szabo (1979), Conti and Szabó (1989); to Euomphalina by Sepkoski (2002); and to Discohelicidae by Schröder (1995), Bouchet et al. (2005), Bandel (2010).

Species lacking formal opinion data

D. cooki, D. cotswaldiae, D. didimtuensis, D. douvillei, D. dundriensis, D. elegantulum, D. martinianum, D. parvanodosa, D. planus, D. pontileviensis, D. pulchior, D. pulchrior, D. sinistra, D. sinsitra, D. subaequalis, D. subequalis, D. thevenini

Synonymy list

Year	Name and author
1847	Discohelix Dunker
1897	Discohelix Ulrich and Scofield
1941	Euomphalus (Discohelix) Delpey p. 264
1960	Discohelix Knight et al. p. 195
1979	Discohelix Szabo p. 20
1989	Discohelix Conti and Szabó p. 30
1995	Discohelix Schröder p. 10
2002	Discohelix Sepkoski
2005	Discohelix Bouchet et al. p. 66
2010	Discohelix Bandel p. 479

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Rank	Name	Author
kingdom	Animalia	()
—	Bilateria
—	Eubilateria	Ax 1987
—	Protostomia
—	Spiralia
superphylum	Lophotrochozoa

Rank	Name	Author
phylum	Mollusca
class	Gastropoda
subclass	Vetigastropoda	(Salvini-Plawen 1980)
superfamily	Cirroidea
family	Discohelicidae	Schröder 1995
genus	Discohelix	Dunker 1847

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. †Discohelix Dunker 1847

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Subg. †Discohelix (Discogonius) Yin and Yochelson 1983

†Discohelix (Discogonius) subvenusta Yin and Yochelson 1983

Subg. †Discohelix (Discohelix) Dunker 1848

†Discohelix (Discohelix) cotsoldiae Wendt 1968

†Discohelix (Discohelix) guembeli Ammon 1893

Subg. †Discohelix (Pentagonodiscus) Wendt 1968

†Discohelix (Pentagonodiscus) angusta Wendt 1968

†Discohelix acarinata Szabo 1979

†Discohelix albinatiensis Dumortier 1874

†Discohelix calculiformis Dunker 1847

†Discohelix calculus Sandberger 1870

†Discohelix californicus Weaver 1905

†Discohelix centricosta Wendt 1968

†Discohelix centricostan Wendt 1968

†Discohelix conica Wendt 1968

†Discohelix costata Wendt 1968

†Discohelix cotswoldiae Lycett 1850

†Discohelix crenulata Moore 1867

†Discohelix dictyota Wendt 1968

†Discohelix elegantula Douvillé 1916

†Discohelix excavata Reuss 1852

Invalid names: Discohelix amabilis Seguenza 1885 [synonym]

†Discohelix guembeli von Ammon 1892

†Discohelix inornata Szabo 1979

†Discohelix leana Gabb 1864

†Discohelix levis Wendt 1968

†Discohelix mariae Gemmellaro 1911

†Discohelix miocarinata Szabo 1979

†Discohelix murrayensis Hanna 1927

†Discohelix orbis Reuss 1852

Invalid names: Discohelix galatensis Seguenza 1885 [synonym]

†Discohelix orientalis Zhu 1995

†Discohelix ornata Hauer 1853

†Discohelix pinguis Zhu 1995

†Discohelix planigyroides Anderson 1938

†Discohelix radiata Phillips 1841

†Discohelix texana Aldrich 1911

†Discohelix tunisiensis Cox 1969

†Discohelix venustus Zhu 1995

Diagnosis

No diagnoses are available

Measurements

part	N	mean	minimum	maximum	median	s.d.
height	11	6.77	4.80	9.30	6.70	1.45
shell height	3	0.720	0.180	9.00	0.230	5.08

Composition:

aragonitec

Locomotion:

actively mobilesupero

Life habit:

epifaunalsupero

Diet:

grazersupero

Vision:

limitedc

Created:

2009-09-10 08:55:39

Modified:

2009-09-10 10:55:39

Source: supero = superorder, c = class

References: Hendy et al. 2009, Kiessling 2004

Age range: base of the Pelsonian to the top of the Early/Lower Pleistocene or 244.24000 to 0.77400 Ma

Collections (146 total)

Time interval	Ma	Country or state	Original ID and collection number
Anisian	246.7 - 241.464	China (Guizhou)	Woehrmannia venusta (98055)
Pelsonian - Illyrian	244.24 - 241.464	China (Guizhou)	Discogonius sp. (31618) Discogonius subvenustus (31617 31619 31620 31631 31632) D. subvenusta (44250 44255)
Rhaetian	205.7 - 201.4	Peru	D. sp. (68096)
Hettangian - Sinemurian	201.4 - 192.9	Germany	D. sp. (236987)
Late/Upper Sinemurian	199.5 - 192.9	Hungary	D. orbis, D. excavata, D. acarinata (118984)
Oxynotum - Raricostatum	199.5 - 192.9	Hungary (Veszprém Megye)	D. excavata (118997) D. ornata, D. excavata, D. inornata (81576)
Raricostatum	199.5 - 192.9	Hungary	D. sp. (118986 118988)
Late/Upper Sinemurian - Early/Lower Pliensbachian	199.5 - 184.2	Hungary	D. orbis (78691) D. orbis, D. miocarinata (78630)
Raricostatum - Davoei	199.5 - 184.2	Hungary	D. orbis, D. miocarinata (78690)
Raricostatum - Ibex	199.5 - 184.2	Hungary	D. orbis, D. acarinata (78689)
Semicostatum - Ibex	199.5 - 184.2	Hungary	D. orbis, D. acarinata (78688)
Davoei	192.9 - 184.2	Hungary	D. excavata (108956 109115 118998 119134) D. orbis (108950 108951 108952 108955 108958 109112 109116 109121 109122 118999 119000 119003) D. orbis, D. excavata (108953 109120)
Early/Lower Pliensbachian	192.9 - 184.2	Italy (Messina)	D. orbis, D. excavata, D. mariae (173593)
Ibex	192.9 - 184.2	United Kingdom (Dorset)	D. orbis (159147)
Ibex	192.9 - 184.2	Hungary	D. acarinata (108883 108884 108885) D. orbis (108850 108939 108940 108941 108942 108943 108944 108948 118991) D. orbis, D. excavata, D. acarinata (45475)
Ibex	192.9 - 184.2	Hungary (Veszprém Megye)	D. orbis (81548 81550)
Margaritatus	192.9 - 184.2	Hungary	D. orbis (108895 108963 109100 109103 109105 109106 109110 109141 109142 109494 109499 109500 109513 109515 109519)
Margaritatus	192.9 - 184.2	Hungary (Veszprém Megye)	D. sp. (45472)
Pliensbachian	192.9 - 184.2	Italy (Veneto)	D. excavata (98398)
Pliensbachian	192.9 - 184.2	Hungary	D. orbis, D. excavata (91407) D. orbis, D. excavata, D. miocarinata, D. acarinata (91406)
Spinatum	192.9 - 184.2	Hungary	D. orbis (108966)
Early/Lower Pliensbachian - Middle Toarcian	192.9 - 180.4	Hungary	D. orbis (108969)
Early/Lower Toarcian	184.2 - 182.9	Spain	D. sinistra (26391) D. sinsitra (26390) D. subequalis (26139)
Early/Lower Toarcian	184.2 - 182.9	Somalia	D. sp. (179136)
Toarcian	184.2 - 174.7	Kenya	D. didimtuensis (36455)
Toarcian	184.2 - 174.7	Saudi Arabia	D. douvillei (45186 45187 45189)
Toarcian	184.2 - 174.7	Italy	D. dictyota, D. albinatiensis, D. conica, D. centricostan, D. costata, D. crenulata (191474)
Late/Upper Toarcian	180.4 - 174.7	Italy	D. dictyota (91410)
Concavum	174.7 - 170.9	Morocco	D. guembeli (97886) D. subaequalis (97901 97935)
Middle Aalenian	174.7 - 170.9	Italy (Central Italy )	D. cooki (123679)
Opalinum	174.7 - 170.9	United Kingdom	D. dundriensis, D. pulchior (141362)
Aalenian - Early/Lower Bajocian	174.7 - 168.6	Italy	D. cotswaldiae, D. levis, D. calculiformis, D. angusta (175384)
Early/Lower Bajocian	170.9 - 168.6	Italy (Umbria)	D. cooki (176993)
Bajocian	170.9 - 168.2	Italy (Central Italy )	D. cooki (123682)
Bajocian	170.9 - 168.2	Morocco	D. pulchrior, D. subaequalis, D. sp. (97937)
Bajocian	170.9 - 168.2	Saudi Arabia	D. sp. (48136)
Humphresianum - Parkinsoni	170.9 - 168.2	Hungary	D. cotswoldiae (91409)
Sauzei	170.9 - 168.2	Morocco	D. costata (97894)
Bajocian - Bathonian	170.9 - 165.3	China (Yunnan)	D. calculus (165451)
Late/Upper Bajocian - Early/Lower Bathonian	168.6 - 165.3	Germany	D. parvanodosa (58412)
Bathonian	168.2 - 165.3	Germany	D. parvanodosa (58210)
Bathonian	168.2 - 165.3	Saudi Arabia	D. sp. (48307 48340 48396 48405 48447)
Bathonian	168.2 - 165.3	Egypt	D. elegantula (171222) D. sp. (171228)
Callovian	165.3 - 161.5	Yemen (Wadi Hajar)	D. sp. (2607 2608)
Callovian	165.3 - 161.5	India	D. sp. (61886)
Callovian	165.3 - 161.5	Saudi Arabia	D. douvillei (47890) D. sp. (47846 47873 47902 47912 48604)
Early/Lower Callovian	165.3 - 161.5	Tunisia	D. tunisiensis (100389)
Late/Upper Callovian	165.3 - 161.5	Italy	D. guembeli (191475)
Middle Callovian - Late/Upper Callovian	165.3 - 161.5	Tunisia	D. tunisiensis (13585)
Middle Callovian - Late/Upper Callovian	165.3 - 161.5	Saudi Arabia	D. douvillei (34544)
Early/Lower Oxfordian	161.5 - 154.8	Italy	D. guembeli (191476)
Oxfordian	161.5 - 154.8	Saudi Arabia	D. douvillei, D. sp., D. elegantulum (45562 45818) D. elegantulum (45982) D. sp. (46047)
Aptian	121.4 - 113.2	Austria	D. martinianum (65803 65804 65806)
Early/Lower Albian	113.2 - 110.1	Madagascar	D. thevenini (98226)
Albian	113.2 - 100.5	Madagascar	D. thevenini (98228 98244)
Middle Albian	110.1 - 106.3	Madagascar	D. thevenini (98218)
Middle Albian	110.1 - 106.3	Madagascar (Mahajanga)	D. thevenini (86503)
Cenomanian	100.5 - 93.9	United Kingdom (England)	D. planus (81060)
Early/Lower Cenomanian	100.5 - 93.9	USA (California)	D. leana (167599)
Middle Campanian	83.6 - 72.2	USA (California)	D. leana (72056)
Paleocene	66.0 - 56.0	USA (California)	D. californicus (190777) D. sp. (190776 190780)
Selandian	61.66 - 59.24	Denmark	D. sp. (51500)
Selandian	61.66 - 59.24	USA (California)	D. californicus (239601)
Thanetian	59.24 - 56.0	USA (California)	D. californicus (52612)
Lutetian	48.07 - 41.03	France (Centre)	D. pontileviensis (178085)
Early/Lower Pleistocene	2.58 - 0.774	USA (Florida)	D. sp. (41501)