Scleractinia taxon details
Amphimeandra L. Beauvais & Mori, 1988 †
1438074 (urn:lsid:marinespecies.org:taxname:1438074)
accepted
Genus
Latomeandra eguchii Mori, 1963 † accepted as Amphimeandra eguchii (Mori, 1963) † (type by original designation)
marine, fresh, terrestrial
fossil only
Beauvais L, Mori K. (1988). Amphimeandra, a new genus in the family Amphiastraeidae (Mesozoic Scleractinia). <em>Geobios.</em> 21(1): 103-108., available online at https://doi.org/10.1016/s0016-6995(88)80035-4 [details]
Description Kei Mori (1963: 61, pl. 23, fig. 4, 5) described briefly colony structure and illustrated it with thin sections. Beauvais...
Description Kei Mori (1963: 61, pl. 23, fig. 4, 5) described briefly colony structure and illustrated it with thin sections. Beauvais and Mori (1988:104, pl.1, fig.1-3; text fig.1) repeated illustrations of the transverse and longitudinal thin sections, generally, perpendicular to the calicular series, and completed the figures with longitudinal, slightly oblique section parallel to the series. [details]
Hoeksema, B. W.; Cairns, S. (2025). World List of Scleractinia. Amphimeandra L. Beauvais & Mori, 1988 †. Accessed at: https://www.marinespecies.org/scleractinia/aphia.php?p=taxdetails&id=1438074 on 2025-05-26
Date
action
by
original description
Beauvais L, Mori K. (1988). Amphimeandra, a new genus in the family Amphiastraeidae (Mesozoic Scleractinia). <em>Geobios.</em> 21(1): 103-108., available online at https://doi.org/10.1016/s0016-6995(88)80035-4 [details]
Present Inaccurate Introduced: alien Containing type locality
From editor or global species database
Comparison The genus is highly similar to Barremian-Aptian Rhipidomeandra Morycowa and Masse, 1998, family Trochoidomeandridae, in the structure of collins, with common vesicular zones developed of lonsdaleoid dissepiments on both sides of the middle stereomal wall, confluent septa in the collins and calices distributed in monolinear series (1998: p.735, fig. 9:1a,b, 2a,b, 3). It differs from Rhipidomeandra in wide dissepimental zones and septa differentiated into only two size orders; further finds will clarify their relations. Due to this closeness to Rhipidomeandra, the genus has been re-classified to the family Trochoidomeandridae. The original attribution of the genus to Amphiastraeidae cannot be maintained, because it has neither pachytheca, nor pocket budding; large dissepiments with lonsdaleoid septa were misinterpreted as new corallites increasing by pocket budding (Taschenknospung) typical of the amphiastreids. [details]Description Kei Mori (1963: 61, pl. 23, fig. 4, 5) described briefly colony structure and illustrated it with thin sections. Beauvais and Mori (1988:104, pl.1, fig.1-3; text fig.1) repeated illustrations of the transverse and longitudinal thin sections, generally, perpendicular to the calicular series, and completed the figures with longitudinal, slightly oblique section parallel to the series. [details]
Diagnosis Meandroid. Corallites in monolinear series; collins with a wall of a structure so far unknown in the Jurassic, made of vertical pillars and stereome. Calices well marked, deep. Along both sides of the wall, large, lonsdaleoid dissepiments form a common vesicular, peripheral zone. Peripheral dissepiments slope steeply toward the calicular centers to form tabuloid endothecal structure. Inner calicular part is incompletely surrounded by an inner stereomal wall developed as a deposit on the surface of dissepiments. Septa differentiated into at most two size orders, vertically continuous in the inner calicular parts, peripherally discontinuous, lonsdaleoid, and between the series connected by the intermediate of the wall pillar. One S1 septum per calice may be strongest from others. Increase by incomplete division inside the series. [details]
Remark Only one species is known. [details]
