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Cyrtodiscus

Gastropoda - Bellerophontida - Sinuitidae

Taxonomy
Oxydiscus (Cyrtodiscus) was named by Perner (1903) [Sepkoski's age data: O Llde O u Sepkoski's reference number: 1].

It was reranked as Cyrtodiscus by Knight et al. (1960), Horný (1963), Runnegar and Jell (1976), Yü (1986), Horný (1997) and Sepkoski (2002).

It was assigned to Oxydiscus by Perner (1903); to Temnodiscinae by Horný (1963); to Cyrtolitidae by Knight et al. (1960), Runnegar and Jell (1976), Yü (1986) and Horný (1997); and to Mollusca by Sepkoski (2002).

Synonyms
Synonymy list
YearName and author
1903Oxydiscus (Cyrtodiscus) Perner
1960Cyrtodiscus Knight et al. p. 175
1962Gamadiscus Horný pp. 473 - 474
1963Cyrtodiscus Horný
1963Gamadiscus Horný
1976Cyrtodiscus Runnegar and Jell p. 118
1976Gamadiscus Runnegar and Jell p. 121
1986Cyrtodiscus Yü p. 15
1997Cyrtodiscus Horný
2002Cyrtodiscus Sepkoski
2002Gammadiscus Sepkoski

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RankNameAuthor
kingdomAnimalia()
—Bilateria
—EubilateriaAx 1987
—Protostomia
—Spiralia
superphylumLophotrochozoa
phylumMollusca
RankNameAuthor
classGastropoda
orderBellerophontidaUlrich and Scofield 1897
suborderBellerophontina
superfamilyBellerophontoidea()
familySinuitidae
genusCyrtodiscus()

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. †Cyrtodiscus Perner 1903
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†Cyrtodiscus evolvens Perner 1903
†Cyrtodiscus nitidus Perner 1903
†Cyrtodiscus procer Perner 1903
†Cyrtodiscus simaki Horný 1997
Invalid names: Gamadiscus Horný 1962 [synonym]
Diagnosis
No diagnoses are available
Measurements
No measurements are available
Composition: aragoniteo
Composition 2: low Mg calciteo
Entire body: yessubg
Adult length: 1.0 to < 10subg
Adult height: 10 to < 100subg
Locomotion: actively mobilef
Life habit: epifaunalf
Diet: detritivoref
Vision: limitedc
Created: 2009-03-04 09:51:37
Modified: 2009-03-04 11:51:37
Source: subg = subgenus, f = family, o = order, c = class
References: Hendy et al. 2009, Hendy 2009, Kiessling 2004

Age range: base of the Cassinian to the top of the Hirnantian or 482.30000 to 443.40000 Ma

Collections (26 total)


Time interval Ma Country or state Original ID and collection number
Demingian485.4 - 478.6USA (Montana) C. sp. (284 69026)
Cassinian482.3 - 470.0United Kingdom (Scotland) C. sp. (75589)
Arenig478.6 - 466.0France (Montagne Noire) Gamadiscus sp. (20823)
Oretanian468.0 - 459.0Morocco C. nitidus (56176)
Llanvirn468.0 - 458.4Czech Republic (Prague) Gamadiscus sp. (76458)
Sarka466.0 - 466.0Czech Republic (Plzeňský) Oxydiscus nitidus (95016)
Sarka466.0 - 466.0Czech Republic Gamadiscus nitidus (95015) Gammadiscus sp. (3857) Oxydiscus nitidus (95017)
Letna - Harnagian460.9 - 457.2Czech Republic C. procer (3861)
Idavere458.0 - 453.0Sweden (Skane) C. evolvens (137014) Temnodiscus sp. (80104)
Idavere458.0 - 453.0Sweden (Skania) Temnodiscus sp. (2770)
Berounian457.9 - 449.8Czech Republic Oxydiscus procer (155175)
Zahorany457.5 - 455.8Czech Republic (Bohemia) C. simaki (13512)
Zahorany457.5 - 455.8Czech Republic (Praha) C. simaki (99737)
Keila453.9 - 453.0Sweden (Skane) C. evolvens (164606 164607 164608)
Pirgu449.5 - 445.2Sweden (Skåne) C. evolvens (164614 164615)
Hirnantian445.2 - 443.4Czech Republic (Praha) Temnodiscus evolvens (149320 155721 202253 202254)