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Oreaspis ampla

Pteraspidomorpha - Pteraspidiformes

Taxonomy
Protaspis amplus was named by Bryant (1933). Its type specimen is PU 13520, a partial skeleton (A dorsal shield in yellow limestone), and it is a 3D body fossil.

It was recombined as Oreaspis ampla by Denison (1970).

Synonyms
  • Protaspis nanus was named by Bryant (1933). Its type specimen is PU 13644, a partial skeleton (The front half of a small dorsal shield seen in visceral aspect), and it is a 3D body fossil.

    It was synonymized subjectively with Oreaspis ampla by Denison (1970).
  • Protaspis perlatus was named by Bryant (1933). Its type specimen is PU 13565, a partial skeleton (The left half of a dorsal shield seen from the visceral side and imbedded in yellow limestone), and it is a 3D body fossil.

    It was synonymized subjectively with Oreaspis ampla by Denison (1970).
  • Protaspis perryi was named by Bryant (1933). Its type specimen is PU 13518, a partial skeleton (A fragmentary dorsal shield in yellow limestone), and it is a 3D body fossil.

    It was synonymized subjectively with Oreaspis ampla by Denison (1970).
Synonymy list
YearName and author
1933Protaspis nanus Bryant p. 298 figs. Pl. IX, Figs. 1, 2
1933Protaspis amplus Bryant p. 299 figs. Pl. X; Text Fig. 3
1933Protaspis perlatus Bryant p. 300 figs. Pl. XI; Text Fig. 4
1933Protaspis perryi Bryant p. 302 figs. Pl. XII, Figs. 1, 2
1970Oreaspis ampla Denison pp. 30 - 31 fig. 23

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RankNameAuthor
kingdomAnimalia()
—Bilateria
—EubilateriaAx 1987
—Deuterostomia
phylumChordataHaeckel 1874
subphylumCraniata
superclassPteraspidomorphi(Goodrich 1909)
RankNameAuthor
classPteraspidomorpha
subclassHeterostraciLankester 1868
orderPteraspidiformesBerg 1940
suborderPteraspidoidei(Janvier 1996)
genusOreaspis
speciesampla()

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.

†Oreaspis ampla Bryant 1933
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Invalid names: Protaspis nanus Bryant 1933 [synonym], Protaspis perlatus Bryant 1933 [synonym], Protaspis perryi Bryant 1933 [synonym]
Diagnosis
ReferenceDiagnosis
R. H. Denison 1970Rostrum of moderate length, relatively longer in
larger individuals (RL/TL= 0.23-0.32) with the roundness of its an- terior end intermediate between that of O. dunklei and O. williamsi. Ornament coarse, with about five dentine ridges per millimeter. Total length of dorsal shield reaching 170 mm.