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Nannoceratopsis radiata
Nannoceratopsis radiatus Kumar, 1986
Holotype: Kumar, 1986, pl.5, fig.6
Locus typicus: Kachchh, India
Stratum typicum: Kimmeridgian-Tithonian
Original diagnosis: Kumar, 1986, p.405
Proximate, triangular to subtriangular, laterally compressed cysts. A minute epicyst and a large hypocyst are present, and they are connected by a narrow but distinct paracingulum. Hypocyst has two large, radiating antapical horns of almost similar shape and size. Maximum width of the cyst is at the tips of the two antapical horns. The archaeopyle is not seen. Paratabulation is indistinct but occasionally faintly marked, low and discontinuous ridges might develop indicating a paratabulation pattern on the hypocyst. A narrow saggital band may or may not be present. Wall single layered, areolate to finely reticulate.
Original description: Kumar, 1986, p.405-406
These are proximate, generally triangular to slightly subtriangular, laterally compressed cysts. The dorsal and ventral sides of the cysts are more or less straight, and a large antapical concavity separates the two antapical horns. The dorsal side may be slightly convex and the ventral side may be slightly concave. The maximum width of the cyst is at the tips of the antapical horns. A minute epicyst and a large hypocyst are present, connected by a small but distinct neck-like paracingulum. The paracingulum is about three times as wide as the width of the epicyst. The hypocyst is very large and has two antapical, radiating horns of almost similar shape and size. A narrow saggital band in the hypocyst is often present and it is separated from the lateral surface by narrow ridges.
An archaeopyle is not seen. Paratabulation is indistinct, although occasionally, faintly marked, low and discontinuous ridges are present on the hypocyst indicating possible paraplate boundaries. Wall single layered, areolate or finely reticulate.
Dimension: Based on five specimens. Length of cyst = 127-143 Ám. Maximum width of cyst = 80-83 Ám.
Affinities:
Kumar, 1986, p.406: N. radiatus is morphologically allied to N. pellucida and N. spiculata, but differs from both of them in shape and in larger size. N. pellucida is widest in the middle of the cyst, whereas N. radiatus is widest at the tips of the antapical horns. N. spiculata has much shorter and less divergent antapical horns than N. radiatus.
Holotype: Kumar, 1986, pl.5, fig.6
Locus typicus: Kachchh, India
Stratum typicum: Kimmeridgian-Tithonian
Original diagnosis: Kumar, 1986, p.405
Proximate, triangular to subtriangular, laterally compressed cysts. A minute epicyst and a large hypocyst are present, and they are connected by a narrow but distinct paracingulum. Hypocyst has two large, radiating antapical horns of almost similar shape and size. Maximum width of the cyst is at the tips of the two antapical horns. The archaeopyle is not seen. Paratabulation is indistinct but occasionally faintly marked, low and discontinuous ridges might develop indicating a paratabulation pattern on the hypocyst. A narrow saggital band may or may not be present. Wall single layered, areolate to finely reticulate.
Original description: Kumar, 1986, p.405-406
These are proximate, generally triangular to slightly subtriangular, laterally compressed cysts. The dorsal and ventral sides of the cysts are more or less straight, and a large antapical concavity separates the two antapical horns. The dorsal side may be slightly convex and the ventral side may be slightly concave. The maximum width of the cyst is at the tips of the antapical horns. A minute epicyst and a large hypocyst are present, connected by a small but distinct neck-like paracingulum. The paracingulum is about three times as wide as the width of the epicyst. The hypocyst is very large and has two antapical, radiating horns of almost similar shape and size. A narrow saggital band in the hypocyst is often present and it is separated from the lateral surface by narrow ridges.
An archaeopyle is not seen. Paratabulation is indistinct, although occasionally, faintly marked, low and discontinuous ridges are present on the hypocyst indicating possible paraplate boundaries. Wall single layered, areolate or finely reticulate.
Dimension: Based on five specimens. Length of cyst = 127-143 Ám. Maximum width of cyst = 80-83 Ám.
Affinities:
Kumar, 1986, p.406: N. radiatus is morphologically allied to N. pellucida and N. spiculata, but differs from both of them in shape and in larger size. N. pellucida is widest in the middle of the cyst, whereas N. radiatus is widest at the tips of the antapical horns. N. spiculata has much shorter and less divergent antapical horns than N. radiatus.