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

Decoroproetus asellus

Trilobita - Proetida - Tropidocoryphidae

Taxonomy
Trilobites asellus was named by Esmark (1833). Its type specimen is PMO 56442 (Cephalon + thorax) and is a 3D body fossil.

It was recombined as Proetus asellus by Størmer (1940); it was recombined as Ogmocnemis asellus by Kielan (1960); it was recombined as Decoroproetus asellus by Owens (1973).

Sister species lacking formal opinion data
D. anaglyptus, D. quirinus

Synonyms
  • Proetus remotus was named by Warburg (1925).

    It was synonymized subjectively with Decoroproetus asellus by Owens (1973).
  • Proetus modestus was named by Tornquist (1884). It is the type species of Proetus (Warburgaspis).

    It was recombined as Proetus (Warburgaspis) modestus by Pribyl (1946); it was recombined as Warburgaspis modestus by Pillet (1969); it was synonymized subjectively with Decoroproetus asellus by Owens (1973).
  • Proetus mactaggarti was named by Begg (1946). Its type specimen is Hunt. Mus. A 3691, a cephalon/head, and it is a 3D body fossil.

    It was synonymized subjectively with Decoroproetus asellus by Owens (1973).
  • Dicellocephalus leptaenarum was named by Wiman (1907) [Dicellocephalus? leptaenarum].

    It was synonymized subjectively with Decoroproetus asellus by Owens (1973).
Synonymy list
YearName and author
1833Trilobites asellus Esmark figs. pl. 7 f. 5
1884Proetus modestus Tornquist p. 46 figs. pl. 2, fig. 3
1907Dicellocephalus leptaenarum Wiman p. 5 figs. pl. 2, figs. 1-3
1925Proetus remotus Warburg p. 170 figs. pl. 5, fig. 7
1940Proetus asellus Størmer p. 122 figs. pl. l, fig. l and text-fig. 2
1946Proetus mactaggarti Begg pp. 40 - 41 figs. pl. 3, figs. 1-2
1946Proetus (Warburgaspis) modestus Pribyl p. 5
1960Ogmocnemis asellus Kielan p. 71
1969Warburgaspis modestus Pillet figs. pl. 3, fig. 8, p. 81; pl. 6, fig. 22, p. 84.
1973Decoroproetus asellus Owens pp. 135 - 137 figs. 4, A, B, D-I

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

RankNameAuthor
kingdomAnimalia()
—Bilateria
—EubilateriaAx 1987
—Protostomia
—EcdysozoaAguinaldo et al. 1997
—Panarthropoda
phylumArthropodaLatreille 1829
subphylumArtiopoda(Hou and Bergstrom)
RankNameAuthor
classTrilobitaWalch 1771
orderProetidaFortey and Owens 1975
superfamilyProetoideaHawle and Corda 1847
familyTropidocoryphidaePribyl 1946
subfamilyTropidocoryphinaePribyl 1946
genusDecoroproetusPribyl 1946
speciesasellus(Esmark 1833)

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.

†Decoroproetus asellus Esmark 1833
show all | hide all
Invalid names: Decoroproetus leptaenarum Wiman 1907 [synonym], Decoroproetus mactaggarti Begg 1946 [synonym], Decoroproetus modestus Tornquist 1884 [synonym], Decoroproetus remotus Warburg 1925 [synonym]
Diagnosis
ReferenceDiagnosis
R. M. Owens 1973Glabella not constricted laterally, frontal lobe well rounded, lateral glabellar furrows weak, not always seen; occipital ring characteristic­ ally a little wider (trans.) than glabella; cephalic border narrow, brim-like; eye small, eye socle with incised lower marginal furrow which diverges markedly from the upper at either end, e and ; independent angles; pygidial axis strongly arched longitudinally, with 6 ill-defined rings, pleural areas with 5 pairs of ribs, on which interpleural furrows are inconspicuous.
Measurements
No measurements are available
Composition: low Mg calcitec
Composition 2: chitinc
Entire body: yesg
Adult length: 10 to < 100g
Adult width: 10 to < 100g
Adult height: 1.0 to < 10g
Spines: minorg
Ontogeny: molting, addition of partsc
Environment: marinec
Locomotion: fast-movingc
Life habit: low-level epifaunalc
Diet: deposit feedero
Created: 2009-06-09 12:58:26
Modified: 2009-06-09 14:58:26
Source: g = genus, o = order, c = class
References: Fortey and Owens 1999, Harrington et al. 1959, Aberhan et al. 2004

Age range: Pusgillian or 449.50000 to 449.20000 Ma

Collections (10 total)


Time interval Ma Country or state Original ID and collection number
Onnian - Pusgillian453.0 - 449.2Norway (Hadeland) Decoroproetus asellus (163381)
Katian453.0 - 445.2Sweden (Dalarna) Proetus remotus, Proetus modestus (124939)
Katian - Hirnantian453.0 - 443.4Sweden (Dalarne) Decoroproetus asellus, Proetus modestus (73413)
Pusgillian449.5 - 449.2Norway (Skiens-Langsund) Decoroproetus asellus (73450)
Pirgu - Porkuni449.5 - 443.7Sweden (Dalarne) Decoroproetus asellus (73407) Decoroproetus asellus, Proetus modestus (73462)
Pirgu - Hirnantian449.5 - 443.4Sweden (Dalarne) Decoroproetus asellus (73409) Decoroproetus asellus, Proetus modestus (73408 73414)
Pirgu - Hirnantian449.5 - 443.4Sweden (Dalarna) Proetus modestus (158137)