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Hesslerides

Trilobita - Proetida - Phillipsiidae

Synonymy list
YearName and author
2000Hesslerides Brezinski p. 1061
2002Hesslerides Jell and Adrain p. 384

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RankNameAuthor
kingdomAnimalia()
Bilateria
EubilateriaAx 1987
Protostomia
Ecdysozoa
Panarthropoda
phylumArthropodaLatreille 1829
RankNameAuthor
subphylumArtiopoda(Hou and Bergstrom)
classTrilobitaWalch 1771
orderProetidaFortey and Owens 1975
superfamilyProetoideaHawle and Corda 1847
familyPhillipsiidaeOehlert 1886
genusHesslerides

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.

G. †Hesslerides Brezinski 2000
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Hesslerides arcentensis Brezinski 2000
Hesslerides bufo Meek and Worthen 1870
Diagnosis
ReferenceDiagnosis
D. K. Brezinski 2000Glabella mildly laterally inflated in the frontal lobe, nearly as wide between ???? as the width at L1, broadly round- ed in the frontal lobe, meeting margin at sagittal line. Small L1, isolated from glabella, suboval in outline, not extending behind base of glabella, separated from glabella by shallow, broad S1. Posterior facial sutures with very short straight section. Lateral cephalic border narrow, flat, sharply rounded at margin, extending posteriorly on to a short genal spine. Pygidium short, semicircular in outline, with a distinct border inclined at same angle as distal parts of the pleural fields. Pleural furrows well developed on all but most posterior ribs, extending onto border.