Back
Spiniferites ramosus ssp. cavispinosus
Spiniferites ramosus ssp. cavispinosus Hansen, 1977
Holotypus: Hansen, 1977, fig.21D
Locus typicus: Stevns Klint, Denmark
Stratum typicum: Maastrichtian
Original diagnosis: Hansen, 1977, p.13
Spiniferites ramosus with hollow processes and a composite granulation of the central body, i. e. 10-15 small granules are grouped together forming larger granules with almost no spacing giving rise to a structure resembling a cauliflower.
Spherical central body with long and very thin-walled processes. Processes hollow to the tips of furcae, unbranched, or branched in the cingular region, trifurcate and with bifid tips. Processes circular or rounded triangular in cross-section, distally closed. Sutural processes not present. Process bases are connected by low double-membranes or by tubiform bulges of the periphragm. At the central body the endophragm and periphragm are in close contact and cannot be distinguished except below processes and sutures where the composite granulation is seen to be attributed to the endophragm. At plate areas the composite granulation is seen on the surface of the periphragm. This may be explained by the extremely thin periphragm, which may form an external cast of the endophragm structure.
Holotypus: Hansen, 1977, fig.21D
Locus typicus: Stevns Klint, Denmark
Stratum typicum: Maastrichtian
Original diagnosis: Hansen, 1977, p.13
Spiniferites ramosus with hollow processes and a composite granulation of the central body, i. e. 10-15 small granules are grouped together forming larger granules with almost no spacing giving rise to a structure resembling a cauliflower.
Spherical central body with long and very thin-walled processes. Processes hollow to the tips of furcae, unbranched, or branched in the cingular region, trifurcate and with bifid tips. Processes circular or rounded triangular in cross-section, distally closed. Sutural processes not present. Process bases are connected by low double-membranes or by tubiform bulges of the periphragm. At the central body the endophragm and periphragm are in close contact and cannot be distinguished except below processes and sutures where the composite granulation is seen to be attributed to the endophragm. At plate areas the composite granulation is seen on the surface of the periphragm. This may be explained by the extremely thin periphragm, which may form an external cast of the endophragm structure.