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Exilitheca

Orthothecida - Allathecidae

Taxonomy
Exilitheca is a genus. It is not extant.

It was assigned to Exilithecida by Sepkoski (2002); and to Allathecidae by Parkhaev and Demidenko (2010).

Species lacking formal opinion data
E. multa

Synonyms
Synonymy list
YearName and author
2002Egdetheca Sepkoski
2002Exilitheca Sepkoski
2010Exilitheca Parkhaev and Demidenko p. 939

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RankNameAuthor
kingdomAnimalia()
—Bilateria
—EubilateriaAx 1987
—Protostomia
—Spiralia
superphylumLophotrochozoa
RankNameAuthor
—Lophophorata
phylumHyolitha
orderOrthothecida
familyAllathecidae
genusExilitheca

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.

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Invalid names: Egdetheca [synonym]
Diagnosis
ReferenceDiagnosis
P. Y. Parkhaev and Y. Demidenko 2010"Shell conical, long, and curved. Expansion angle changes from 8° in apical part to 22° in middle part, then towards aperture decreases to 9° (Sysoev, 1972). Cross-section rounded-triangular, sometimes rounded-trapeziform. Apical part of shell pointed. Aperture straight or almost straight. Shell smooth or with slightly developed longitudinal and transverse ribs."
Measurements
No measurements are available
Composition: aragonitep
Environment: marinep
Locomotion: stationaryp
Life habit: epifaunalp
Diet: suspension feederp
Vision: blindp
Created: 2009-04-21 11:54:00
Modified: 2011-03-22 11:35:54
Source: p = phylum
Reference: Hendy et al. 2009

Age range: base of the Tommotian to the top of the Branchian or 525.50000 to 509.00000 Ma

Collections (16 total)


Time interval Ma Country or state Original ID and collection number
Tommotian525.5 - 521.0Russian Federation (Khabarovsk Krai) E. multa (50314)
Tommotian525.5 - 521.0Russian Federation (Krasnoyarsk Krai) Egdetheca sp. (96392) E. multa (232906) E. sp., E. multa (50429)
Tommotian525.5 - 521.0Russian Federation (Siberia) E. sp., E. multa (50428)
Tommotian525.5 - 521.0China (Yunnan) E. fangchengensis (171902)
Tommotian525.5 - 521.0Russian Federation E. sp. (233042)
Tommotian525.5 - 521.0Russian Federation (Yakutiya) Egdetheca aldanica (96251 96394) E. multa (80796 80812) E. multa, E. ancestralis, E. oblonga (80809)
Tommotian525.5 - 521.0Russian Federation (Yakutia) Egdetheca aldanica (45847 45850 96245)
Branchian517.1 - 509.0United Kingdom (England) Egdetheca sp. indet. (79931)