PBDB Taxon

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Eoorthis

Rhynchonellata - Orthida - Eoorthidae

Taxonomy

Eoorthis was named by Walcott (1908) [Sepkoski's age data: Cm Dres-u O Trem Sepkoski's reference number: 1,16,538]. Its type is Orthis remnicha. It is the type genus of Eoorthidae.

It was assigned to Billingsellidae by Henningsmoen (1958); to Eoorthidae by Williams et al. (2000); and to Orthida by Sepkoski (2002).

Species

E. indianola (syn. E. laeviusculus, E. wichitaensis), E. newberryi, E. remnicha (syn. E. texana), E. sabus, E. thyone, E. zeno

Species lacking formal opinion data

E. bayfieldi, E. minima, E. ruzickai

Synonymy list

Year	Name and author
1908	Eoorthis Walcott p. 102
1958	Eoorthis Henningsmoen
2000	Eoorthis Williams et al. p. 766
2002	Eoorthis 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	Rhynchonellata	Williams et al. 1996
order	Orthida	Schuchert and Cooper 1932
suborder	Orthidina	Schuchert and Cooper 1932
superfamily	Plectorthoidea	Schuchert and Le Vene 1929
family	Eoorthidae	Walcott 1908
genus	Eoorthis

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. †Eoorthis Walcott 1908

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†Eoorthis indianola Walcott 1905

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Invalid names: Eoorthis laeviusculus Walcott 1905 [synonym], Eoorthis wichitaensis Walcott 1905 [synonym]

†Eoorthis newberryi Walcott 1908

†Eoorthis remnicha Winchell 1886

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†Orthis (Plectorthis) remnicha texana Walcott 1905

†Orthis (Plectorthis) remnicha winfieldensis Walcott 1905

Invalid names: Eoorthis texana Walcott 1912 [synonym]

†Eoorthis sabus Walcott 1924

†Eoorthis thyone Walcott 1908

†Eoorthis zeno Walcott 1908

†Orthis (Plectorthis) remnicha sulcata Walcott 1905

Diagnosis

No diagnoses are available

Measurements

No measurements are available

Composition:

low Mg calcitep

Entire body:

yesg

Adult length:

10 to < 100g

Adult width:

10 to < 100g

Adult height:

10 to < 100g

Folds:

noneg

Ribbing:

minorg

Spines:

noneg

Internal reinforcement:

noneg

Environment:

marineuc

Locomotion:

stationaryo

Attached:

yeso

Life habit:

epifaunalo

Diet:

suspension feedero

Vision:

blindc

Comments:

BODY SIZE: Data from Williams et al (2002).g

Created:

2009-06-04 07:44:34

Modified:

2009-06-04 09:44:34

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

References: Hendy 2009, Nesnidal et al. 2013, Aberhan et al. 2004

Age range: base of the Maduan to the top of the Llanvirn or 497.00000 to 458.20000 Ma

Collections (43 total)

Time interval	Ma	Country or state	Original ID and collection number
Maduan	497.0 - 495.0	Russian Federation (Krasnoyar)	E. minima (131070)
Dresbachian	497.0 - 486.85	USA (Montana)	E. sp. (236)
Franconian	497.0 - 486.85	USA (Wyoming)	E. remnicha (9043 9044) E. sp. (8951 8953)
Franconian	497.0 - 486.85	USA (Pennsylvania)	E. indianola (156649)
Franconian	497.0 - 486.85	USA (South Dakota)	E. indianola (9712 9715 9727) E. remnicha, E. indianola (9733) E. sp. (266)
Franconian	497.0 - 486.85	USA (Oklahoma)	E. remnicha (221073) E. remnicha, E. indianola (221070 221071)
Franconian	497.0 - 486.85	USA (Montana)	E. remnicha (246 249)
Franconian - Trempealeauan	497.0 - 486.85	Australia (Queensland)	E. sp. (198276)
Furongian	497.0 - 486.85	Norway (Oslo-Asker)	E. sp. (194124)
Furongian	497.0 - 486.85	USA (Utah)	E. sp. (156358)
Furongian	497.0 - 486.85	Norway (Eiker)	E. sp. (194126)
Yurakian	495.0 - 486.85	Russian Federation (Krasnoyar)	E. remnicha (131097)
Iverian	494.2 - 491.0	Russian Federation (Novaya Zemlya)	E. sabus (222974)
Sunwaptan	493.5 - 488.9	USA (Montana)	E. remnicha (136737)
Niuchehean	491.0 - 486.85	Norway (Eiker)	E. sp. (194125)
Skullrockian	488.9 - 483.4	Greenland	E. sp. (122109)
Mansian	486.85 - 485.0	Russian Federation (Siberia)	E. sp. (9287)
Tremadocian	486.85 - 477.1	South Korea	E. sp. (215847 215848 215850 215851)
Tremadoc	486.4 - 477.1	China (Hunan and Hubei)	E. sp. (7720)
Tremadoc	486.4 - 477.1	China (HeBei)	E. sp. (7958)
Tremadoc	486.4 - 477.1	China (JiLin)	E. sp. (21143)
Tremadoc	486.4 - 477.1	China (ShanXi)	E. sp. (8000)
Tremadoc	486.4 - 477.1	Czechia	E. ruzickai (192830)
Tremadoc	486.4 - 477.1	Argentina	E. sp. (8867 8902 8903 9008 9010)
Darriwilian	469.4 - 458.2	Canada (Quebec)	E. bayfieldi (186612)
Llanvirn	468.0 - 458.2	China (Shaanxi)	E. sp. (8536)