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Onnia goldfussi

Trilobita - Trinucleida - Trinucleidae

Taxonomy
Trinucleus goldfussii was named by Barrande (1846). It is a 3D body fossil. Its type locality is Vesela-1.5 km N1OE Beroun, which is in a Berounian transition zone/lower shoreface sandstone in the Letna Formation of the Czech Republic.

It was recombined as Onnia goldfussi by Pribyl and Vanek (1969); it was recombined as Deanaspis goldfussii by Shaw (1995).

Sister species lacking formal opinion data

Synonymy list
YearName and author
1846Trinucleus goldfussii Barrande p. 31
1969Onnia goldfussi Pribyl and Vanek p. 106
1995Deanaspis goldfussii Shaw pp. 15 - 17 figs. 13, 14.1-14.5, 14.7, 14.8, 14.12

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RankNameAuthor
kingdomAnimalia()
Bilateria
EubilateriaAx 1987
Protostomia
Ecdysozoa
Panarthropoda
phylumArthropodaLatreille 1829
RankNameAuthor
subphylumArtiopoda(Hou and Bergstrom)
classTrilobitaWalch 1771
subclassLibristoma
orderTrinucleida(Swinnerton 1915)
familyTrinucleidaeHawle and Corda 1847
genusOnniaBancroft 1933
speciesgoldfussi(Barrande 1846)

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.

Onnia goldfussi Barrande 1846
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Diagnosis
ReferenceDiagnosis
F. C. Shaw 1995Cephalic outline semicircular, maximum width (tr.) nearly twice length (sag.), genal prolongations long, about one-third length of sagittal cephalic length. Glabella high, ex- panding anteriorly; posterior end one-eighth total cephalic width, maximum width at inner fringe margin one third total cephalic width, anterior one-fourth overhangs fringe. Only S1 present as small lateral notch at about one-eighth total glabellar length. Occipital furrow present, ring shows occipital spine base and/ or spine in only a very few specimens (e.g., MCZ 2244, not figured). Genal field smoothly inflated, surface detail absent on most molds, but rarely showing deep pits and three transverse distally radiating ridges.