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Glaphyrocysta longicornis
Glaphyrocysta longicornis He Chengquan, 1991
Holotype: He Chengquan, 1991, pl.15, fig.3
Age: Paleocene-Early Eocene
Description from He Chengquan, 1991, translated by Suning Hou, 07-01-2019
Description: Oval body, length slightly larger than the width, the surface fine granular. With a large number of long processes, the vast majority of fine bars, solid, long 27.5-37.5μm (equivalent to1/2-2/3 of the body length),few processes are stronger (2μm wide); The shape of the ends of processes is variable, mostly simple, a few expanded to a small flat trumpet, or with multiple short branches, or adjacent two processes merge with each other at the enlarged end, etc; There is a smooth, wide-band process in the precingular area with a length of 20μm, expanding distally, the end width 8μm, the base width about 5μm, the ends of the processes are connected by the trabeculae, the trabeculae is not continuous, simple-complex, generally includes two parts of the thin strip-shaped trabeculae and the coronoid film, mainly trabeculae; Trabeculae solid, or smooth or in some parts with sash-like or small dentate membrane; Membrane with or without a variable size oval windows. In addition, some of the processes are connected to each other by trabeculae at somewhere along their length, and sometimes two thin processes (except the distal end) are almost completely fused, there may be some small holes in the united part. Process cluster may present, but generally difficult to distinguish, or only inferred by the cluster phenomenon shown by the process distribution. Processes are mainly distributed around the body, few or absent at the middle of dorsal and vetral side. Archeopyle apical, (tA) type, indicated by a polygonal main crack on the holotype; The operculum is saved in situ. A free operculum is polygonal with complex processes on it.
Holotype total length 125μm, width 117.5μm, body length 57.5μm, width 52μm.
Comparison: The main processes type of this new species is similar to Paleocene Glapphyrocysta retiintexta in Australia (Cookson, 1965). In particular, the processes on the operculum were almost the same as those reported in the same year by Cookson (1965, pp. 137, 138, pl. 24, fig .8a), but the former is small, lacking apical horn, with a broad band-shaped process which was not mentioned in the description of the latter nor shown in the pictures. The new species differs from G. multipeiforata He et Li, 1981 in an oval rather than ellipse outline, no perforation on the broad band-shaped process.
Location and stratigraphy: Wuqian County Basebulak; Qimugen fm, upper part of the lower member
Holotype: He Chengquan, 1991, pl.15, fig.3
Age: Paleocene-Early Eocene
Description from He Chengquan, 1991, translated by Suning Hou, 07-01-2019
Description: Oval body, length slightly larger than the width, the surface fine granular. With a large number of long processes, the vast majority of fine bars, solid, long 27.5-37.5μm (equivalent to1/2-2/3 of the body length),few processes are stronger (2μm wide); The shape of the ends of processes is variable, mostly simple, a few expanded to a small flat trumpet, or with multiple short branches, or adjacent two processes merge with each other at the enlarged end, etc; There is a smooth, wide-band process in the precingular area with a length of 20μm, expanding distally, the end width 8μm, the base width about 5μm, the ends of the processes are connected by the trabeculae, the trabeculae is not continuous, simple-complex, generally includes two parts of the thin strip-shaped trabeculae and the coronoid film, mainly trabeculae; Trabeculae solid, or smooth or in some parts with sash-like or small dentate membrane; Membrane with or without a variable size oval windows. In addition, some of the processes are connected to each other by trabeculae at somewhere along their length, and sometimes two thin processes (except the distal end) are almost completely fused, there may be some small holes in the united part. Process cluster may present, but generally difficult to distinguish, or only inferred by the cluster phenomenon shown by the process distribution. Processes are mainly distributed around the body, few or absent at the middle of dorsal and vetral side. Archeopyle apical, (tA) type, indicated by a polygonal main crack on the holotype; The operculum is saved in situ. A free operculum is polygonal with complex processes on it.
Holotype total length 125μm, width 117.5μm, body length 57.5μm, width 52μm.
Comparison: The main processes type of this new species is similar to Paleocene Glapphyrocysta retiintexta in Australia (Cookson, 1965). In particular, the processes on the operculum were almost the same as those reported in the same year by Cookson (1965, pp. 137, 138, pl. 24, fig .8a), but the former is small, lacking apical horn, with a broad band-shaped process which was not mentioned in the description of the latter nor shown in the pictures. The new species differs from G. multipeiforata He et Li, 1981 in an oval rather than ellipse outline, no perforation on the broad band-shaped process.
Location and stratigraphy: Wuqian County Basebulak; Qimugen fm, upper part of the lower member