PBDB Taxon

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Dyoros

Strophomenata - Strophomenida - Rugosochonetidae

Taxonomy

Dyoros was named by Stehli (1954) [Sepkoski's age data: P Sakm-u P Guad-u Sepkoski's reference number: 7].

It was assigned to Svalbardiinae by Williams et al. (2000); and to Strophomenida by Sepkoski (2002).

Species

D. (Dyoros), D. (Lissosia), D. (Tetragonetes), D. acanthopelix, D. esoterica, D. grandis, D. kaibabensis, D. lamellosa, D. pentagonalis, D. semicircularis

Synonyms

Stauromata was named by Hoover (1981) [Sepkoski's age data: P Leon-u]. Its type is Stauromata esoterica.

It was synonymized subjectively with Dyoros by Williams et al. (2000).

It was assigned to Strophomenida by Sepkoski (2002).

Synonymy list

Year	Name and author
1954	Dyoros Stehli p. 312
1981	Stauromata Hoover p. 51
2000	Dyoros Williams et al. p. 415
2002	Dyoros Sepkoski
2002	Stauromata Sepkoski

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Rank	Name	Author
kingdom	Animalia	()
—	Bilateria
—	Eubilateria	Ax 1987
—	Protostomia
—	Spiralia
superphylum	Lophotrochozoa
—	Lophophorata
—	Panbrachiopoda	Carlson and Cohen 2020

Rank	Name	Author
phylum	Brachiopoda	Cuvier 1805
subphylum	Rhynchonelliformea	Williams et al. 1996
class	Strophomenata	Williams et al 1996
order	Strophomenida	Opik 1934
superfamily	Chonetoidea
family	Rugosochonetidae
subfamily	Svalbardiinae	Archbold 1982
genus	Dyoros

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. †Dyoros Stehli 1954

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Subg. †Dyoros (Dyoros) Stehli 1954

†Dyoros (Dyoros) angulatus Cooper and Grant 1975

†Dyoros (Dyoros) attenuatus Cooper and Grant 1975

†Dyoros (Dyoros) consanguineus Girty 1929

†Dyoros (Dyoros) convexus Cooper and Grant 1975

†Dyoros (Dyoros) endospinus Cooper and Grant 1975

†Dyoros (Dyoros) extensiformis Cooper and Grant 1975

†Dyoros (Dyoros) extensus Cooper and Grant 1975

†Dyoros (Dyoros) hillanus Girty 1909

†Dyoros (Dyoros) intrepidus Cooper and Grant 1975

†Dyoros (Dyoros) magnus Stehli 1954

†Dyoros (Dyoros) mucronata Shen et al. 2005

†Dyoros (Dyoros) planiextensus Cooper and Grant 1975

†Dyoros (Dyoros) pseudotrapezoidalis Miloradovich 1949

†Dyoros (Dyoros) robustus Cooper and Grant 1975

†Dyoros (Dyoros) spitzbergianus Toula 1874

†Dyoros (Dyoros) subliratus Girty 1909

†Dyoros (Dyoros) tenuis Cooper and Grant 1975

†Dyoros (Dyoros) transversus Cooper and Grant 1975

†Dyoros (Dyoros) vulgaris Cooper and Grant 1975

Subg. †Dyoros (Lissosia) Cooper and Grant 1975

†Dyoros (Lissosia) concavus Cooper and Grant 1975

†Dyoros (Lissosia) maya Torres-Martínez et al. 2016

†Dyoros (Lissosia) nevadaensis Racheboeuf et al. 2004

†Dyoros (Lissosia) parvus Cooper and Grant 1975

†Dyoros (Lissosia) vagabundus Cooper and Grant 1975

Subg. †Dyoros (Tetragonetes) Cooper and Grant 1975

†Dyoros (Tetragonetes) auriculatus Cooper and Grant 1975

†Dyoros (Tetragonetes) complanatus Cooper and Grant 1975

†Dyoros (Tetragonetes) giganteus Cooper and Grant 1975

†Dyoros (Tetragonetes) lateralis Cooper and Grant 1975

†Dyoros (Tetragonetes) planus Cooper and Grant 1975

†Dyoros (Tetragonetes) quadrangulatus Cooper and Grant 1975

†Dyoros (Tetragonetes) rectangulatus Cooper and Grant 1975

†Dyoros (Tetragonetes) solidus Cooper and Grant 1975

†Dyoros (Tetragonetes) strigosus Cooper and Grant 1975

†Dyoros (Tetragonetes) subquadratus Cooper and Grant 1975

†Dyoros (Tetragonetes) tetragonus Cooper and Grant 1975

Invalid names: Chonetes quadratus King 1931 [replaced]

†Dyoros (Tetragonetes) wordensis Cooper and Grant 1975

†Dyoros acanthopelix Hoover 1981

†Dyoros esoterica Hoover 1981

†Dyoros grandis Afanasjeva 1977

†Dyoros kaibabensis McKee 1938

†Dyoros lamellosa Liu and Waterhouse 1985

†Dyoros pentagonalis Waterhouse 1978

†Dyoros semicircularis Afanasjeva 1991

Invalid names: Stauromata Hoover 1981 [synonym]

Diagnosis

No diagnoses are available

Measurements

part	N	mean	minimum	maximum	median	s.d.
shell height	306	2.32	0.600	8.60	2.40	1.34

Composition:

low Mg calcitep

Environment:

marineuc

Locomotion:

stationaryo

Attached:

yesp

Life habit:

epifaunalo

Diet:

suspension feedero

Vision:

blindc

Created:

2004-02-28 14:13:23

Modified:

2009-04-13 11:03:33

Source: o = order, c = class, p = phylum, uc = unranked clade

References: Aberhan et al. 2004, Nesnidal et al. 2013

Age range: base of the Sakmarian to the top of the Capitanian or 293.52000 to 259.51000 Ma

Collections (296 total)

Time interval	Ma	Country or state	Original ID and collection number
Sakmarian	293.52 - 290.1	Canada (Yukon)	D. pseudotrapezoidalis (117724 117727 117729 117744)
Artinskian	290.1 - 279.3	Svalbard and Jan Mayen	D. grandis (117291)
Artinskian	290.1 - 279.3	USA (Nevada)	D. nevadaensis (52134 52135)
Artinskian	290.1 - 279.3	USA (Texas)	Chonetes subliratus (150792)
Artinskian	290.1 - 279.3	Mongolia	D. semicircularis (116246 116247)
Artinskian	290.1 - 279.3	Russian Federation	D. pseudotrapezoidalis (86036 110105 110162 110171) D. transversus (110156) D. transversus, D. pseudotrapezoidalis (110161) Lissochonetes spitzbergianus (110104)
Artinskian	290.1 - 279.3	Canada (Yukon)	D. pseudotrapezoidalis (117716)
Artinskian - Kungurian	290.1 - 272.3	USA (Texas)	Chonetes subliratus (149784)
Artinskian - Kungurian	290.1 - 272.3	Russian Federation (Nenets Autonomous Okrug)	D. transversus (86154)
Kungurian	279.3 - 272.3	Russian Federation	D. pseudotrapezoidalis (110008) Lissochonetes spitzbergianus (110007)
Kungurian	279.3 - 272.3	Mongolia	D. semicircularis (116251 116252 116254 116255)
Kungurian	279.3 - 272.3	Venezuela (Merida)	D. acanthopelix (41506) Stauromata esoterica (41505 41508 41513 41514)
Kungurian	279.3 - 272.3	USA (Arizona)	Chonetes kaibabensis (148635 148660 148674 148677 148689 148690 148691 148702 148743 148746 148747 148755 148757) Chonetes subliratus (148588 148658 148681 148682 148683 148684 148686 148693 148695 148696 148697 148698 148699 148701)
Kungurian	279.3 - 272.3	Russian Federation (Nenets Autonomous Okrug)	Chonetina pseudotrapezoidalis (126228)
Kungurian	279.3 - 272.3	USA (Texas)	Chonetes consanguineus (151307) Chonetes quadratus (149830) Chonetes subliratus (113192 113195 113198 113202 113207 113212 113218 122520 149782 149787 149820 149836 149860 149931 149934 149995 150116 150245 150246 150247 150259 150557 150562 150788 150790 150793 150800) D. angulatus, D. extensus, D. transversus, D. rectangulatus, D. solidus (43517) D. consanguineus (43566 75864 75865 75881 75919 75923 81724 81848 81950 102627) D. consanguineus, D. magnus (75863 81726 81860) D. extensiformis, D. rectangulatus (43495) D. extensiformis, D. vagabundus, D. giganteus, D. rectangulatus (43494) D. extensiformis, D. vagabundus, D. rectangulatus (43510 43514 81638) D. giganteus (105852) D. lateralis, D. planus (105853) D. magnus (81954) D. planus (44563 105747) D. rectangulatus (43504 81592) D. rectangulatus, D. solidus (43513) D. transversus (102623 106165) D. vagabundus (43498 43515 43516 43582 44565 81635 81644 81711 101811 105687 105746 105843 105938 105981) D. vagabundus, D. giganteus (43589 105935) D. vagabundus, D. giganteus, D. lateralis, D. planus (44519) D. vagabundus, D. giganteus, D. planus (101785) D. vagabundus, D. giganteus, D. rectangulatus (43491) D. vagabundus, D. lateralis (43574) D. vagabundus, D. planus (105939) D. vagabundus, D. rectangulatus (43492)
Kungurian	279.3 - 272.3	Mexico (Chiapas)	D. maya (183478)
Roadian	272.3 - 268.8	Russian Federation	D. grandis (102395) D. planiextensus (109992 109993)
Roadian	272.3 - 268.8	Mexico (Chiapas)	D. rectangulatus (198600)
Roadian	272.3 - 268.8	USA (Texas)	Chonetes hillanus (150609) Chonetes subliratus (108802 113197 113206 113209 149827 149829 149941 149945 150252 150606 150661) Chonetes subliratus, Chonetes quadratus (150782) D. angulatus, D. endospinus, D. extensus, D. transversus, D. concavus, D. parvus (43563) D. angulatus, D. extensiformis, D. transversus, D. parvus, D. rectangulatus (102610) D. angulatus, D. extensus, D. parvus (81671) D. angulatus, D. extensus, D. transversus, D. parvus, D. solidus, D. strigosus (43518) D. angulatus, D. extensus, D. transversus, D. solidus (81640) D. angulatus, D. transversus (44242 105851) D. angulatus, D. transversus, D. concavus (105873) D. angulatus, D. transversus, D. concavus, D. parvus (101783) D. angulatus, D. transversus, D. parvus (101805 101807) D. angulatus, D. transversus, D. solidus (102607) D. concavus (105750 105850 105932 105933 106123) D. convexus, D. auriculatus, D. complanatus (106021) D. convexus, D. auriculatus, D. subquadratus (81693 101767) D. convexus, D. complanatus (81515) D. convexus, D. extensus, D. complanatus (81722) D. extensiformis (105805) D. extensiformis, D. parvus, D. lateralis (105807) D. extensus (105592 105741 105806) D. extensus, D. concavus (43551 81645) D. extensus, D. concavus, D. auriculatus, D. complanatus (102602) D. extensus, D. concavus, D. giganteus (102614) D. extensus, D. concavus, D. wordensis (43553 102605) D. extensus, D. quadrangulatus (105726) D. extensus, D. solidus (43512) D. extensus, D. tenuis, D. concavus (105887) D. extensus, D. tenuis, D. concavus, D. wordensis (43548) D. rectangulatus (105742) D. solidus (102616) D. tenuis (81650) D. transversus (43613 101782 101808 102603 102615 105838 105874) D. transversus, D. vulgaris (106109) D. vagabundus (81639) D. vulgaris (102621)
Roadian - Wordian	272.3 - 264.28	USA (Texas)	Chonetes subliratus (149944 150794 150795 150796 150797) Chonetes subliratus, Chonetes quadratus (150118) D. convexus (106046 106053 106147) D. tenuis, D. concavus (102630)
Roadian - Capitanian	272.3 - 259.51	Svalbard and Jan Mayen	D. mucronata, D. spitzbergianus (90378)
Wordian	266.9 - 264.28	USA (Alaska)	Lissochonetes spitzbergianus (102598)
Wordian	266.9 - 264.28	Japan (Miyagi)	D. sp. (149788)
Wordian	266.9 - 264.28	Svalbard and Jan Mayen (Barentsøya)	Chonetina pseudotrapezoidalis (212888)
Wordian	266.9 - 264.28	Mexico (Coahuila)	Chonetina consanguinea (133174)
Wordian	266.9 - 264.28	Japan	D. sp. (118972)
Wordian	266.9 - 264.28	China (Nei Mongol)	D. lamellosa (112674)
Wordian	266.9 - 264.28	USA (Texas)	Chonetes hillanus (150660) Chonetes hillanus, Chonetes subliratus (108821) Chonetes quadratus (108393 150659 150778) Chonetes subliratus (150261 150798 150799) D. attenuatus, D. intrepidus (81939) D. attenuatus, D. intrepidus, D. robustus (101867) D. concavus, D. complanatus (105573) D. convexus (106105 106157 106290 106291) D. convexus, D. auriculatus, D. complanatus (81695) D. convexus, D. extensus (102626 105683) D. extensus (43557 81709) D. extensus, D. complanatus (81636) D. extensus, D. parvus, D. quadrangulatus (105764) D. extensus, D. planiextensus, D. concavus, D. wordensis (43550) D. extensus, D. quadrangulatus (43526 43552 105821 105977) D. intrepidus (81586 81601 81619 106108 106138 106244) D. intrepidus, D. robustus (102619)
Capitanian	264.28 - 259.51	USA (Texas)	Chonetes hillanus (108812) Chonetes subliratus (108801) D. hillanus (81591 102618 102624 105893 106242) D. hillanus, D. subliratus (101798) D. intrepidus (81613 81623 81626 81631 81697 81698 105894 105895 105903 106243 106248 106249) D. subliratus (106300)
Capitanian	264.28 - 259.51	USA (New Mexico)	D. hillanus (81629 81968) D. subliratus (102629)
Capitanian	264.28 - 259.51	Japan	D. sp. (62292)
Wuchiapingian	259.9 - 254.17	Nepal	Sulcataria pentagonalis (43128 43130)
Wuchiapingian	259.9 - 254.17	USA (Nevada)	D. n. sp. A (39437 39451 39452 39475 39514 39544 39747)
Wuchiapingian	259.9 - 254.17	USA (Utah)	D. n. sp. A (39553)
Wuchiapingian	259.9 - 254.17	Svalbard and Jan Mayen	D. mucronata (51652 117549 117555)