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Encrinurus spicatus

Trilobita - Phacopida - Encrinuridae

Taxonomy
Encrinurus spicatus was named by Tripp (1974). Its type specimen is USNM 164151, a cephalon/head (cranidium), and it is a 3D body fossil.

It was recombined as Encrinuroides spicatus by Desbiens and Lespérance (1989); it was recombined as Erratencrinurus spicatus by Moss and Westrop (2014).

Synonymy list
YearName and author
1974Encrinurus spicatus Tripp pp. 485 - 487 figs. P1. 1, figures 1-8
1989Encrinuroides spicatus Desbiens and Lespérance figs. 2Q-2S
2014Erratencrinurus spicatus Moss and Westrop pp. 1113, table 1

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RankNameAuthor
kingdomAnimalia()
Bilateria
EubilateriaAx 1987
Protostomia
Ecdysozoa
Panarthropoda
phylumArthropodaLatreille 1829
RankNameAuthor
subphylumMandibulata
classTrilobitaWalch 1771
orderPhacopidaSalter 1864
familyEncrinuridaeAngelin 1854
subfamilyEncrinurinaeAngelin 1854
genusEncrinurusEmmrich 1844
speciesspicatus

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
R. P. Tripp 1974Glabella relatively narrow anteriorly, strongly, convex; frontal lobe about half length of glabella, with relatively few tubercles. Tubercle formula: I-1; II-111-1,2,3; (iv-0); IV-1,2,(3); V-1,2. False preglabellar field marked off posteriorly by a shallow furrow. Pygidium with six pairs of pleurae.