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Florentinia hypomagna
Florentinia hypomagna Yun, 1981
Holotype: Yun, pl.6, fig.10, text-figs.14a-b; Fensome et al., 1991, figs.2-4-p.653
Paratype: Yun, pl.6, fig.6.
Locus typicus: Timmermann brickyard near Esbeck, Germany
Stratum typicum: Early Santonian
Translation Yun, 1981: Fensome, 1991, p. 654
Original diagnosis: Yun, 1981, p. 51
A species of Florentinia with a prominent antapical spine, usually simple to trifurcate processes on the epicyst and conspicuously large, sacciform, denticulotubiform or polyfurcate processes on the hypocyst. On each precingular paraplate simple, bifurcate or trifurcate processes commonly occur together.
Original description: Yun, 1981, p. 51
The central body consists of two layers- it is divided into a smaller epicyst and a larger hypocyst by numerous, simple paracingular spines. Apical processes are simple to trifurcate. This spine may be replaced by two simple spines or a simple, bifurcate and trifurcate process. The precingular processes are distally truncate and predominantly simple to trifurcate or occasionally polyfurcate. They are usually forked basally or medially, and may be replaced by two different types of spines.
Furthermore, they are all considerably more slender than the postcingular processes (= 1/2 of a medium, postcingular process). There are 12-14 simple paracingular spines. The four postcingular processes are extremely large sacciform denticulotubiform or polyfurcate. Instead of a fifth (postcingular] piate there are 3-4 simple or bifurcate spines. The antapical spine is distally open and denticulate. A combination archeopyle occasionally occurs (apical plates + 3"). The paratabulation is as follows: 3", 6"", 13-14c, ?s, 5""", 1"""".
Holotype: Yun, pl.6, fig.10, text-figs.14a-b; Fensome et al., 1991, figs.2-4-p.653
Paratype: Yun, pl.6, fig.6.
Locus typicus: Timmermann brickyard near Esbeck, Germany
Stratum typicum: Early Santonian
Translation Yun, 1981: Fensome, 1991, p. 654
Original diagnosis: Yun, 1981, p. 51
A species of Florentinia with a prominent antapical spine, usually simple to trifurcate processes on the epicyst and conspicuously large, sacciform, denticulotubiform or polyfurcate processes on the hypocyst. On each precingular paraplate simple, bifurcate or trifurcate processes commonly occur together.
Original description: Yun, 1981, p. 51
The central body consists of two layers- it is divided into a smaller epicyst and a larger hypocyst by numerous, simple paracingular spines. Apical processes are simple to trifurcate. This spine may be replaced by two simple spines or a simple, bifurcate and trifurcate process. The precingular processes are distally truncate and predominantly simple to trifurcate or occasionally polyfurcate. They are usually forked basally or medially, and may be replaced by two different types of spines.
Furthermore, they are all considerably more slender than the postcingular processes (= 1/2 of a medium, postcingular process). There are 12-14 simple paracingular spines. The four postcingular processes are extremely large sacciform denticulotubiform or polyfurcate. Instead of a fifth (postcingular] piate there are 3-4 simple or bifurcate spines. The antapical spine is distally open and denticulate. A combination archeopyle occasionally occurs (apical plates + 3"). The paratabulation is as follows: 3", 6"", 13-14c, ?s, 5""", 1"""".