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Hormotoma gracilis angustatus

Gastropoda - Murchisoniina - Hormotomidae

Taxonomy
Murchisonia angustata was named by Hall (1847). It is a 3D body fossil.

It was recombined as Hormotoma angustata by Sloan and Webers (1987); it was recombined as Hormotoma angustatus by Wagner (2020); it was recombined as Hormotoma gracilis angustatus by Ulrich and Scofield (1897), Foerste (1924) and Wagner (2023).

Sister species lacking formal opinion data
H. kutsingensis

Synonymy list
YearName and author
1847Murchisonia angustata Hall p. 41 figs. pl. 10 f. 2a-b
1897Hormotoma gracilis angustatus Ulrich and Scofield
1924Hormotoma gracilis angustatus Foerste pp. 215 - 216 figs. pl. 34 f. 20
1987Hormotoma angustata Sloan and Webers p. 185
2020Hormotoma angustatus Wagner
2023Hormotoma gracilis angustatus Wagner p. S1552

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RankNameAuthor
kingdomAnimalia()
—Bilateria
—EubilateriaAx 1987
—Protostomia
—Spiralia
superphylumLophotrochozoa
phylumMollusca
classGastropoda
RankNameAuthor
subclassOrthogastropoda
orderMurchisoniina
superfamilyMurchisonioidea()
familyHormotomidae
genusHormotoma()
speciesgracilis()
subspeciesangustatus()

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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Diagnosis
No diagnoses are available
Measurements
No measurements are available
Composition: aragoniteo
Entire body: yessubg
Adult length: 10 to < 100subg
Adult width: 10 to < 100subg
Adult height: 10 to < 100subg
Folds: nonesubg
Ribbing: minorsubg
Spines: nonesubg
Internal reinforcement: nonesubg
Locomotion: actively mobilesubg
Life habit: epifaunalsubg
Diet: herbivoresubg
Vision: limitedo
Created: 2004-10-20 01:59:43
Modified: 2004-10-20 03:59:43
Source: subg = subgenus, o = order
References: Hendy 2009, Aberhan et al. 2004, Bambach et al. 2007

Age range: base of the Turinian to the top of the Edenian or 457.30000 to 450.20000 Ma

Collections (16 total)


Time interval Ma Country or state Original ID and collection number
Turinian457.3 - 453.8USA (Wisconsin) Hormotoma gracilis (89018)
Blackriveran457.3 - 449.6USA (Minnesota) Hormotoma angustata (23555 23556)
Blackriveran457.3 - 449.6USA (Illinois, Iowa) Hormotoma angustata (23613 23614 23615)
Shermanian457.3 - 449.6USA (Minnesota) Hormotoma angustata (23579 23584)
Shermanian457.3 - 449.6USA (Illinois, Iowa) Hormotoma angustata (23659 23664 23667 23668 23670)
Edenian451.0 - 450.2USA (Minnesota) Hormotoma angustata (23588)
Edenian451.0 - 450.2USA (Illinois, Iowa) Hormotoma angustata (23678)
Edenian451.0 - 450.2Canada (Ontario) Hormotoma angustata (173252)