Back
Peridinium lambdoideum
Peridinium lambdoideum Nagy, 1966
Now Phthanoperidinium. Originally Peridinium, subsequently (and now) Phthanoperidinium.
Holotype: Nagy, 1966, pl.1, fig.1-3; text-fig.1a-b
Locus typicus: Hidas, borehole 53, 135 m, Hungary
Stratum typicum: Early Pliocene
Original diagnosis: Nagy, 1966, p.39: Peridinium lambdoideum
Shell ellipsoidal, Epitheca slightly elongated, about as long as hypotheca. Epitheca exhibiting following tabulation: 4", 2a, 7"", 5""", 2"""" . Surface roughly granular. The pointed sculpture visible at the angles of the tabulations are similar to those on the apex and antapex. In the apical region there are baculum-like projections, too.
Affinities:
Nagy, 1966, p.39: Peridinium lambdoideum
The junetion of the apical and pre-equatorial tabulations shows a characteristic line such as those occurring in figures of P. cinctum O. F. M. and P. bipes Stein, now living species of Dinoflagellata. On the apex of Peridinium bipes Stein some baculum-like projections can also be found.
Now Phthanoperidinium. Originally Peridinium, subsequently (and now) Phthanoperidinium.
Holotype: Nagy, 1966, pl.1, fig.1-3; text-fig.1a-b
Locus typicus: Hidas, borehole 53, 135 m, Hungary
Stratum typicum: Early Pliocene
Original diagnosis: Nagy, 1966, p.39: Peridinium lambdoideum
Shell ellipsoidal, Epitheca slightly elongated, about as long as hypotheca. Epitheca exhibiting following tabulation: 4", 2a, 7"", 5""", 2"""" . Surface roughly granular. The pointed sculpture visible at the angles of the tabulations are similar to those on the apex and antapex. In the apical region there are baculum-like projections, too.
Affinities:
Nagy, 1966, p.39: Peridinium lambdoideum
The junetion of the apical and pre-equatorial tabulations shows a characteristic line such as those occurring in figures of P. cinctum O. F. M. and P. bipes Stein, now living species of Dinoflagellata. On the apex of Peridinium bipes Stein some baculum-like projections can also be found.