Back
Homotryblium deconinckii
Homotryblium deconinckii Islam, 1983
Holotype: Islam, 1983, pl.3, figs.1-2
Paratype: Islam, 1983
Locus typicus: Hampshire Basin, S England
Stratum typicum: Middle Eocene
Original diagnosis: Islam, 1983, p. 340
Cyst ellipsoidal, proximochorate and biphragmal; periphragm chagrinate; intratabular hollow processes proximally circular or oval and closed and distally open and entire always with either flaring or constricting tendency, occasionally possessing minute distal spinules, generally broader than long but sometimes as long as broad; paratabulation observed from one process per paraplate including 6c, 6""",1p, ps,1""""; archeopyle epicystal, an operculum not seen but isolated paraplates found could be opercular pieces.
Dimensions. Holotype: cyst body 21 x 40 Ám (without operculum), length of processes 4-5 Ám, breadth of processes 9-15 Ám. Range: cyst length 21-26 Ám (2 specimens), breadth 44(40)36 Ám, dorsoventral thickness 30-35 Ám (2 specimens), length of processes 1-9 Ám, breadth of processes 5-15 Ám. Specimens measured: 4.
Affinities:
Islam, 1983, p. 340: This species differs from others of the genus, particularly from Homotryblium abbreviatum Eaton 1976, to which it is most similar, in possessing typically short, broader than long processes with tendencies to constrict or flare distally.
Holotype: Islam, 1983, pl.3, figs.1-2
Paratype: Islam, 1983
Locus typicus: Hampshire Basin, S England
Stratum typicum: Middle Eocene
Original diagnosis: Islam, 1983, p. 340
Cyst ellipsoidal, proximochorate and biphragmal; periphragm chagrinate; intratabular hollow processes proximally circular or oval and closed and distally open and entire always with either flaring or constricting tendency, occasionally possessing minute distal spinules, generally broader than long but sometimes as long as broad; paratabulation observed from one process per paraplate including 6c, 6""",1p, ps,1""""; archeopyle epicystal, an operculum not seen but isolated paraplates found could be opercular pieces.
Dimensions. Holotype: cyst body 21 x 40 Ám (without operculum), length of processes 4-5 Ám, breadth of processes 9-15 Ám. Range: cyst length 21-26 Ám (2 specimens), breadth 44(40)36 Ám, dorsoventral thickness 30-35 Ám (2 specimens), length of processes 1-9 Ám, breadth of processes 5-15 Ám. Specimens measured: 4.
Affinities:
Islam, 1983, p. 340: This species differs from others of the genus, particularly from Homotryblium abbreviatum Eaton 1976, to which it is most similar, in possessing typically short, broader than long processes with tendencies to constrict or flare distally.