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Olenellus (Angustolenellus)

Trilobita - Redlichiida - Olenellidae

Taxonomy
Olenellus (Angustolenellus) was named by Palmer and Repina (1993) [Sepkoski's age data: Cm Boto-u]. It is not extant.

It was synonymized subjectively with Mesonacis by Lieberman (1999); it was reranked as Angustolenellus by Sepkoski (2002).

It was assigned to Olenellus by Palmer and Repina (1993); and to Olenellida by Sepkoski (2002).

Synonymy list
YearName and author
1993Olenellus (Angustolenellus) Palmer and Repina p. 22
2002Angustolenellus Sepkoski, Jr.

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RankNameAuthor
kingdomAnimalia()
Bilateria
EubilateriaAx 1987
Protostomia
Ecdysozoa
Panarthropoda
phylumArthropodaLatreille 1829
subphylumMandibulata
RankNameAuthor
classTrilobitaWalch 1771
orderRedlichiidaRichter 1932
suborderOlenellina
superfamilyOlenelloidea
familyOlenellidae
subfamilyOlenellinae
genusOlenellusHall 1861
subgenusAngustolenellus

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.

Diagnosis
ReferenceDiagnosis
A. R. Palmer and L. N. Repina 1993Species of Olerzelluswith posterior margin of cephalon directed slightly anterolaterally distal to position of intergenal spine. Intergenal spines intermediate between genal spine and axial furrow or closer to axial furrow than to genal spine. Sagittal length of preglabellar field equal to or slightly greater than that of anterior border. Posterior tips of ocular lobes directed nearly straight backward, situated opposite or anterior to midlength of Li.