Sous-embranchement (subphylum) des Rhynchonelliformea
Classe des Rhynchonellata
Ordre des Terebratulida
Sous-Ordre des Terebratellidina
Super-famille des Megathyridoidea


Genus Fosteria Zezina, 1980
[Type species= Magellania (?) spinosa Foster, 1974 (p. 142)]

Small, smooth, rectimarginate to unisulcate, foramen large, submesothyrid; beak suberect, attrite; deltidial plates very narrow, disjunct. Cardinalia lamellar, lacking clearly defined cardinal process; inner hinge plates broad, steeply inclined, uniting with low posterior trail of median septum to form septalium; septal pillar high, spinose anteriorly; loop annular, descending branches with several curved spines.

Oligocene - Present

Diagnosis from volume 5 of the
Treatise on Invertebrate Paleontology (2006)

Extant Species of Fosteria
  • F. spinosa (Foster, 1974)
  • Diagnosis

    Fosteria spinosa   (Foster, 1974)

    Type locality:

    “HU st. 32-33 (76°22.4'S, 163°26.2'W): 501 m.”
    Depth range: 256 - 1226 m

    Magellania (?) spinosa Foster, 1974
    Fosteria spinosa: Zezina (1980)

    Diagnosis in preparation -