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

Genus Megerlia King, 1850

[= Mühlfeldtia Bayle, 1880; Pantalleria Dall, 1919 (type Terebratula monstruosa Sacchi, 1836)] [Type species= Anomia truncata Linné, 1767 (p. 1152)]

Medium size, usually wider than long, biconvex to concavoconvex; anterior commissure unisulcate; capillate, striae slightly nodulose; foramen large, submesothyrid to amphithyrid; beak suberect, subtruncate, usually abraded; deltidial plates disjunct. Valve interiors radially tuberculate; ventral valve with small median septum extending under but not supporting pedicle collar. No cardinal process; crural bases attached to inner sides of widely divergent socket ridges that are excavate below; loop bifurcate with distal extensions forming complete ring, descending branches extending from cardinalia to ring. Lophophore plectolophous; spicules common in mantle and arms.

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

Extant Species of Megerlia

M. truncata (Linné, 1767) M. granosa Seguenza, 1865 M. acrura Hiller, 1986

Diagnosis Diagnosis

FIGURES : Megerlia Geographic distribution

Megerlia truncata   (Linné, 1767) Type locality: "Habitat in Pelago Norvegico supra corallia." Depth range: 8 - 1086 m. Anomia truncata Linné, 1767 Terebratula monstruosa Sacchi, 1836 Criopoderma truncatum (Linné, 1767) Orthis truncata var. Philippi, 1836 Pantellaria monstruosa Dall, 1919 Muhlfeldtia disculus (Dall, 1920) Megerlia echinata (Fischer & Œlhert, 1890) Megerlia gigantea (Deshayes, 1863) Diagnosis in preparation -
Megerlia acrura   Hiller, 1986 Type locality: East South Africa Depth range: 0 - 450 m Megerlina gigantea: Zezina (1987) Megerlia? gigantea: Zezina (1994) Diagnosis in preparation -