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Mesonacis fremonti

Trilobita - Redlichiida - Olenellidae

Taxonomy
Olenellus fremonti was named by Walcott (1910).

It was recombined as Olenellus (Fremontia) fremonti by Lochman (1952); it was recombined as Fremontia fremonti by Harrington (1956); it was recombined as Mesonacis fremonti by Resser (1928), Lieberman (1999).

Synonymy list
YearName and author
1910Olenellus fremonti Walcott p. 320 figs. Plate s7, Figs. 1-22 ; Plate 41, Fig. 8
1928Mesonacis fremonti Resser p. 6 figs. Plate I, figs. 3-9; plate 2, fig. 9; plate 3, fig. 8
1952Olenellus (Fremontia) fremonti Lochman p. 91 figs. Plate 18, figures 4, 5
1952Olenellus fremonti Riccio p. 30 figs. Plate 7, figure 6
1956Fremontia fremonti Harrington p. 57
1979Olenellus fremonti Palmer and Halley p. 70 figs. Plate 3, figures 14-17
1999Mesonacis fremonti Lieberman p. 38 figs. 8.1, 8.2, 9.1

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RankNameAuthor
kingdomAnimalia()
—Bilateria
—EubilateriaAx 1987
—Protostomia
—EcdysozoaAguinaldo et al. 1997
—Panarthropoda
phylumArthropodaLatreille 1829
subphylumArtiopoda(Hou and Bergstrom)
RankNameAuthor
classTrilobitaWalch 1771
orderRedlichiidaRichter 1932
suborderOlenellina
superfamilyOlenelloidea
familyOlenellidae
subfamilyMesonacinae(Walcott 1891)
genusMesonacis
speciesfremonti()

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.

†Mesonacis fremonti Walcott 1910
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Diagnosis
No diagnoses are available
Measurements
No measurements are available
Composition: low Mg calcitec
Composition 2: chitinc
Ontogeny: molting, addition of partsc
Environment: marinec
Locomotion: fast-movingo
Life habit: low-level epifaunalo
Diet: deposit feedero
Vision: well-developedf
Created: 2009-12-21 05:06:25
Modified: 2009-12-21 07:06:25
Source: f = family, o = order, c = class
References: Hendy et al. 2009, Aberhan et al. 2004, Whittington et al. 1997

Age range: base of the Dyeran to the top of the Delamaran or 515.30000 to 505.30000 Ma

Collections (22 total)


Time interval Ma Country or state Original ID and collection number
Dyeran515.3 - 509.7USA (Nevada) Olenellus fremonti (203344)
Dyeran515.3 - 509.7USA (California) Mesonacis fremonti (219693 219694 219695) Olenellus fremonti (10606 10607 10608 10610 10611 10612 10631 149638 149696 192036 226565 226569 226617 226618)
Dyeran515.3 - 509.7Canada (Newfoundland) Mesonacis fremonti (195913)
Dyeran515.3 - 509.7Mexico Olenellus fremonti (10684)
Dyeran - Delamaran515.3 - 505.3Canada (Newfoundland) Olenellus fremonti (195762)
Delamaran509.7 - 505.3USA (California) Mesonacis fremonti (219692)