Basic info Taxonomic history Classification Included Taxa
Morphology Ecology and taphonomy External Literature Search Age range and collections

Leptaena (Leptaena) trifidum

Strophomenata - Strophomenida - Rafinesquinidae

Taxonomy
Leptaenopoma trifidum was named by Marek and Havlíček (1967). It is a 3D body fossil. Its type locality is Temporary outcrop just northwest of Běchovice, which is in a Hirnantian transition zone/lower shoreface shale in the Kosov Formation of the Czech Republic.

It was recombined as Leptaena trifidum by Rong and Li (1999), Rong et al. (2002); it was recombined as Leptaena (Leptaena) trifidum by Cocks (2005).

Sister species lacking formal opinion data
L. dicax

Synonymy list
YearName and author
1967Leptaenopoma trifidum Marek and Havlíček p. 283 figs. pl. 4 f. 1, 4, 8
1999Leptaena trifidum Rong and Li p. 837
2002Leptaena trifidum Rong et al.
2005Leptaena (Leptaena) trifidum Cocks p. 258

Is something missing? Join the Paleobiology Database and enter the data

RankNameAuthor
kingdomAnimalia()
—Bilateria
—EubilateriaAx 1987
—Protostomia
—Spiralia
superphylumLophotrochozoa
—Lophophorata
—PanbrachiopodaCarlson and Cohen 2020
phylumBrachiopodaCuvier 1805
RankNameAuthor
subphylumRhynchonelliformeaWilliams et al. 1996
classStrophomenataWilliams et al 1996
orderStrophomenidaOpik 1934
superfamilyStrophomenoideaKing 1846
familyRafinesquinidaeSchuchert 1893
subfamilyLeptaeninaeHall and Clarke 1894
genusLeptaenaDalman 1828
subgenusLeptaenaDalman 1828
speciestrifidum()

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.

†Leptaena (Leptaena) trifidum Marek and Havlíček 1967
show all | hide all
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: 1.0 to < 10g
Folds: noneg
Ribbing: minorg
Spines: noneg
Internal reinforcement: noneg
Environment: marineuc
Locomotion: stationaryg
Attached: yesp
Life habit: epifaunalg
Diet: suspension feederg
Vision: blindc
Created: 2009-04-13 09:55:02
Modified: 2018-11-11 09:56:39
Source: g = genus, c = class, p = phylum, uc = unranked clade
References: Hendy et al. 2009, Aberhan et al. 2004, Nesnidal et al. 2013

Age range: base of the Hirnantian to the top of the Porkuni or 445.20000 to 443.70000 Ma

Collections (15 total)


Time interval Ma Country or state Original ID and collection number
Porkuni445.6 - 443.7Sweden (Dalarne) Leptaenopoma trifidum (152984 153022 153023)
Hirnantian445.2 - 443.4Czech Republic (Praha) Leptaenopoma trifidum (149318 type locality: 149320)
Hirnantian445.2 - 443.4Sweden (Dalarne) Leptaenopoma trifidum (73455)
Hirnantian445.2 - 443.4China (Guizhou) Leptaena trifidum (151935 151938 153002 153004)
Hirnantian445.2 - 443.4China (Hubei) Leptaena trifidum (151939 151940 151941) Leptaenopoma trifidum (75448)
Hirnantian445.2 - 443.4Sweden (Jamtland) Leptaenopoma trifidum (153332)