Belongs within: Rotaliida.
Contains: Lepidocyclina.
The Lepidocyclinidae are a Middle Eocene to Middle Miocene assemblage of large, circular to radiate foraminiferans (Loeblich & Tappan 1964).
Characters (Loeblich & Tappan 1964): Test circular or radiate, compressed to inflated lenticular, composed of distinct equatorial layer overlain on each side by zones of lateral chambers or by laminated shell material with vacuoles; embryonic chambers bilocular, followed by distinct, long spiral of periembryonic chambers, or by short spiral of these chambers, or by reduced sequences of periembryonic chambers on periphery of embryonic chambers; equatorial chambers arcuate, ogival, rhombic, spatulate or hexagonal; chamber walls perforate with definite stolons, without canal system.
<==Lepidocyclinidae [Helicolepidininae]
| i. s.: Helicosteginopsis Caudri 1975B-F08
|--Helicostegina Barker & Grimsdale 1936B-F08, LT64 [incl. Helicolepidinoides Tan 1936LT64]
| |--H. gyralis Barker & Grimsdale 1936B-F08, LT64 [=*Helicolepidinoides gyralisLT64]
| |--+--*H. dimorpha Barker & Grimsdale 1936LT64, B-F08, LT64
| | `--H. soldadensisB-F08
| `--+--H. paucispiraB-F08
| |--H. polygyralisB-F08
| `--Helicolepidina Tobler 1922B-F08, LT64 [incl. Helicocyclina Tan 1936LT64]
| |--*H. spiralis Tobler 1922LT64
| |--H. nortoni [incl. H. spiralis trinitatis]B-F08
| `--H. paucispira (Barker & Grimsdale 1936) [=*Helicocyclina paucispira]LT64
`--+--Eulinderina Barker & Grimsdale 1936B-F08
| `--*E. guayabalensis (Nuttall 1930) [=Planorbulina (Planorbulinella) guayabalensis]LT64
`--+--Polylepidina Vaughan 1924B-F08 [incl. Eolepidina Tan 1939LT64]
| |--*P. chiapasensis (Vaughan 1924)LT64, B-F08, LT64 [=Lepidocyclina chiapasensisLT64]
| | |--P. c. chiapasensisB-F08
| | `--P. c. subplanaB-F08
| |--P. antillea (Cushman 1919) [=Lepidocyclina antillea]LT64
| `--‘Eulinderina’ semiradiata Barker & Grimsdale 1936 [=*Eolepidina semiradiata]LT64
`--LepidocyclininaeLT64
|--LepidocyclinaB-F08
|--Pseudolepidina Barker & Grimsdale 1937LT64
| `--*P. trimera Barker & Grimsdale 1937LT64
|--Astrolepidina Loeblich & Tappan 1988B-F08
| `--*A. asterodisca (Nuttall 1932) [=Lepidocyclina asterodisca]LT64
`--Eulepidina Douvillé 1911 (see below for synonymy)LT64
|--*E. dilatata (Michelotti 1861) [=Orbitoides dilatata, Lepidocyclina (*Eulepidina) dilatata]LT64
|--E. ephippioides (Jones & Chapman in Andrews 1900) (see below for synonymy)LT64
|--E. favosa [=Lepidocyclina (Eulepidina) favosa]C40
|--‘Lepidocyclina (*Multilepidina)’ irregularis Hanzawa 1932LT64
|--E. papuaensisB-F08
|--‘Lepidocyclina (*Cyclolepidina)’ suvaensis Whipple 1934LT64
`--E. undosa [=Lepidocyclina (Eulepidina) undosa]C40
Eulepidina Douvillé 1911 [incl. Cyclolepidina Whipple 1934, Multilepidina Hanzawa 1932, Trybliolepidina van der Vlerk 1928]LT64
Eulepidina ephippioides (Jones & Chapman in Andrews 1900) [=Lepidocyclina ephippioides, *Trybliolepidina ephippioides]LT64
*Type species of generic name indicated
References
[B-F08] BouDagher-Fadel, M. K. 2008. The Cenozoic larger benthic foraminifera: the Palaeogene. Developments in Palaeontology and Stratigraphy 21: 297–418.
[C40] Cushman, J. A. 1940. Foraminifera: Their classification and economic use 3rd ed. Harvard University Press: Cambridge (Massachusetts).
[LT64] Loeblich, A. R., Jr & H. Tappan. 1964. Sarcodina: chiefly “thecamoebians” and Foraminiferida. In Moore, R. C. (ed.) Treatise on Invertebrate Paleontology pt C. Protista 2 vol. 2. The Geological Society of America and The University of Kansas Press.