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Thaleops depressicapitata

Trilobita - Corynexochida - Illaenidae

Taxonomy
Illaenus depressicapitatus was named by Bradley (1930). Its type specimen is UC 28895, a cephalon/head (exfoliated cranidia), and it is a 3D body fossil.

It was recombined as Thaleops depressicapitata by Amati and Westrop (2004).

Synonymy list
YearName and author
1930Illaenus depressicapitatus Bradley pp. 252 - 253 figs. pl. 28 figs 11–14
2004Thaleops depressicapitata Amati and Westrop pp. 231 - 236 figs. Pl. 10, figs 2–4, Pl. 11, Pl. 12, Pl. 13, figs 1–2

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RankNameAuthor
kingdomAnimalia()
—Bilateria
—EubilateriaAx 1987
—Protostomia
—Ecdysozoa
—Panarthropoda
phylumArthropodaLatreille 1829
RankNameAuthor
subphylumArtiopoda(Hou and Bergstrom)
classTrilobitaWalch 1771
orderCorynexochida
familyIllaenidaeHawle and Corda 1847
genusThaleopsConrad 1843
speciesdepressicapitata()

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.

†Thaleops depressicapitata Bradley 1930
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Diagnosis
ReferenceDiagnosis
L. Amati and S. R. Westrop 2004A species of Thaleops with strong longitudinal convexity. Muscle scar attachment sites well defined on internal moulds as two longitudinal ridges along the lateral margins of the glabella with a shallow depression between. Relict segmentation present on ventral surface of pygidial axis. Anterior margin of pygidial doublure with second, smaller pair of forward projections between larger pair of forward projections on either side of axis.
Measurements
No measurements are available
Composition: low Mg calcitec
Composition 2: chitinc
Entire body: yesf
Adult length: 10 to < 100f
Adult width: 10 to < 100f
Ontogeny: molting, addition of partsc
Environment: marinec
Locomotion: actively mobileo
Life habit: nektobenthico
Diet: carnivoreo
Created: 2009-06-11 18:00:52
Modified: 2009-06-11 20:00:52
Source: f = family, o = order, c = class
References: Aberhan et al. 2004, Hendy et al. 2009, Hendy 2009

Age range: Trentonian or 457.30000 to 449.60000 Ma

Collections (2 total)


Time interval Ma Country or state Original ID and collection number
Shermanian457.3 - 449.6USA (Illinois) Illaenus depressicapitatus (154952)
Trentonian457.3 - 449.6USA (Missouri) Illaenus depressicapitatus (89024)