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Clathrospyris vogti
Goll and Björklund, 1989
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Description - Add description
Skeleton consists of a simple cephalis on many specimens. Some specimens have additionally a short irregular thorax joined to the three basal spines. Cephalis large, thick-walled, smooth or chaotically spinous, joined directly to the top of the sagittal ring. The loose trellise of cephalic lattice is confined to lateral margins and V-side of cephalis and frames a single large pair of sagittal lattice pores on the D- side of the cephalis. A- and V-spines short. Three spines project basally as extensions of the D- and LL bars. Some specimens have additional irregularly disposed basal spines. Rare specimens have a short skirt of loosely trellised thoracic lattice joined to the basal spines.
Diagnosis:
A species of Clathrospyris characterized by the presence of a single pair of sagittal lattice pores on the D-side of the cephalis.
Etymology:
The species is named posthumously in honor of Professor Johan H. L. Vogt, 1858-1932, Royal Frederick's University, Oslo.
Remarks: Clathrospyris vogti includes specimens described by Goll and Bjorklund (1980), as transitional between Clathrospyris sandellae and Eucoronis fridtjofnanseni.
Occurrence: Clathrospyris vogti is restricted to the C. vogti Zone in Sample 104-643A-12H-2, 105-107 cm to -12H-1, 105-107 cm.
Size: 105-135 μm, maximum cephalic width.
Holotype: PMO 117.587; Sample 104-643A-12H-1, 27-29 cm; England Finder E54/0; PL 4, Fig. 32.
| | Goll and Björklund 1989 |
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