Montlivaltiidae

Dietrich, 1926

Diagnosis

Radial elements are compact bicuneiform costosepta or biseptal sheets mostly free, never contratingent only anastomosed by their inner edge in the deeper part of the central area of the corallite. Distal edge with a rather regular dentition most typically made of trifid or pyramidal teeth, diamond shaped in section. The inner edge of larger septa are rhopaloid. The lateral faces are ornamented by vertical to steeply inclined carinae disposed in water jet, most typically opposed on both sides of the septum. These carinae may be well visible in the distal part and their relief is often progressively smoothed downward in such a way that we can observe smooth septa and intermediate situations with regularly aligned granules along the trabecules. Distance between centers of trabeculae range between 150 and 1300 _m. Branching trabeculae produce two or more lateral axes that are projected in a plan including the trabecular axis and perpendicular to the septal plan. Fibers steeply inclined on the trabecular axis. Radial symmetry is dominant but often difficult to decipher in terms of hexameral arrangement especially in colonial genera where the dominant intracalicular mode of increase disturbs the initial arrangement. The bilaterality is marked by the curvature of septa and in some cases by the elongation of the columellar space. No synapticulae, No fultures, but abundant endotheca.

Contains

• Latiphyllia Fromentel, 1861, p. 164
• Thecophyllia Milne Edwards and Haime, 1848, p. 491
• Isastrea Milne Edwards and Haime, 1851: p. 102
• Meandramorpha Babaev, 1973, p. 107
• Monocyclastraea Kuzmicheva, 1972, p. 48
• Puschastraea Roniewicz, 1966: 214
• Kobyphyllia Baron-Szabo, 1997
• Microphyllastraea Alloiteau, 1955, p.676
• Phylloseriopsis Beauvais, 1970, p. 1126
• Dimorphocoeniopsis Zlatarski, 1967, p. 1317
• Elasmophyllia Achiardi, 1875, p. 149
• Mesoseris Ferry, 1870, p. 206
• Goldfussastrea Beauvais, 1964, p. 170
• Paradiplocteniopsis Zlatarski, 1968, p. 65
• Peplosmilia Milne Edwards and Haime, 1851, p. 57
• Amblophyllia Orbigny, 1849, p.8
• Ondadiplocteniopsis Zlatarski, 1968, p. 61
• Pseudocycloseris Alloiteau, 1957, p. 343
• Andemantastraea Alloiteau, 1951, p. 49
• Paraclausastrea Zlatarski, 1968
• Thecomeandra Eliášová, 1973, p.71
• Paraphyllogyra Beauvais, 1970, p. 1117
• Lobophyllum Quenstedt, 1880, p. 660
• Strobilosmilia Alloiteau, 1952, p. 633
• Confusastrea D'Orbigny 1849, p. 10
• Gonioseris Duncan, 1872, p. 21
• Platastraea Tomes 1885, p. 183
• Phyllogyra Tomes, 1882, p. 430
• Plesiomontlivaltia Alloiteau, 1957, p. 114
• Diplogyra Eguchi, 1936, p. 70
• Cyathophylliopsis Beauvais, 1970, p.54
• Coenotheca Quenstedt, 1879, p. 609
• Complexastraeopsis Morycowa, 1974, p. 468
• Carantoseris Alloiteau, 1952, p. 666
• Dimorphocoenia Fromentel, 1857, p. 55
• Carcicocaenia Alloiteau, 1953, p. 883
• Comophyllastraea Alloiteau, 1957, p. 253
• Lasmogyra Orbigny, 1849, vol. 2, p. 203
• Thecosmiliopsis Lebanidze, 1991, p.23
• Stereophyllia Alloiteau, 1952, p. 611
• Dimorphosmilia Tomes 1901, p. 78
• Edwardsosmilia Alloiteau, 1952, p. 634
• Diplocteniopsis Zlatarski, 1968, p. 52
• Montlivaltoides He and Xiao, 1990, p. 155
• Complexastrea Orbigny, 1849, p. 10
• Dermosastraea Beauvais, 1970, p. 1129
• Clausastrea Orbigny, 1849, p. 9
• Palaeocyathus Alloiteau, 1956, n° 86
• Dordonophyllia Alloiteau, 1957, 195
• Anisastraea Alloiteau, 1957, p. 163
• Mycetophylliopsis Oppenheim, 1930, p. 379
• Cyclastraea Alloiteau, 1952, p. 655
• Plesiodiplocteniopsis Zlatarski, 1968, p. 70
• ?Margarastreopsis Beauvais, 1964: 163
• Lasmosmilia Orbigny, 1849, vol. 2, p. 203
• Trochophyllia Alloiteau, 1952, p. 611
• Meandrastrea Orbigny, 1849, p. 10
• Aphragmastraea Solomko, 1888, p. 19

This page has been in preparation since 02-Oct-2009 17:15

This version was contributed by Ken Johnson on 02-Oct-2009 17:15.

Page authors are: Bernard Lathuilière. Please contact the editor if you would like to contribute to the diagnosis of this taxon.

The editor is: Bernard Lathuilière