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Sphaerocoryphe gemina

Trilobita - Phacopida - Cheiruridae

Taxonomy
Sphaerocoryphe gemina was named by Tripp et al. (1997). Its type specimen is ROM 50739, a pygidium, and it is a 3D body fossil. Its type locality is Loc. 3. south side of road, 0.2 mile east of Strasburg Junction, which is in a Turinian carbonate limestone in the Edinburg Formation of Virginia.

Sister species lacking formal opinion data

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Synonymy list
YearName and author
1997Sphaerocoryphe gemina Tripp et al. pp. 772 - 773 figs. 1, 2A-20, 8A, 8B, 8D, 8E, 8G, 8H, 8J-8L, 12Q

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RankNameAuthor
kingdomAnimalia()
Bilateria
EubilateriaAx 1987
Protostomia
Ecdysozoa
Panarthropoda
phylumArthropodaLatreille 1829
subphylumMandibulata
RankNameAuthor
classTrilobitaWalch 1771
orderPhacopidaSalter 1864
suborderCheirurinaHarrington and Leanza 1957
familyCheiruridaeHawle and Corda 1847
subfamilyDeiphoninaeRaymond 1913
genusSphaerocorypheAngelin 1854
speciesgemina

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 et al. 1997A species of Sphaerocoryphe with sagittal length of pygidium 30 - 55 % exsagittal length, bearing short, divergent, upwardly inclined great spines; span across tips of first free points frequently exceeding span of tips of great spines. Genal spines stout, divergent. Single profixigenal spine. Prosopon of fixigena finer and denser than that of frontal lobe. Sutural ridge and socle of librigena weakly developed. Hypostome elongate, posterior margin convex backward.