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Liriospyris elevata Goll, 1968

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LIRIOSPYRIS ELEVATA n. sp. Goll 1968 p. 1426; pl. 175, fig. 4, 5, 8, 9

A species of Liriospyris characterized by three lattice bars that are joined to the sagittal ring and the absence of a sternal bar or sternal pore.

Etymology of name:
The trivial name is derived from the Latin adjective elevatus, meaning raised, which describes the position of the lattice bars that are joined to the saggital ring.

Sagittal ring subcircular; 62 to 75μ high; 53 to 68μ thick; joined to front, apex and back of lattice shell. Vertical spine very short, projecting from approximate midpoint of sagittal ring; no frontal or axial spines. Some specimens have no apical spine; in other skeletons, apical spine very short. Some specimens have primary-lateral spines and no connector bars; in other forms, only connector bars are primary-lateral bars joined to basal ring. Basal ring oval; 62 to 78μ wide; 46 to 59μ thick; joined to front and back of sagittal ring; encloses two or four basal pores. No lattice, spines or basal spines. Lattice shell smooth; 99 to 115μ wide; not constricted sagittally; not extending below basal ring. Lattice bars massive and circular in cross section; three joined to sagittal ring between apical and vertical spines. In most skeletons, two lattice bars joined to each side of basal ring. Lattice pores 14 to 36μ in diameter; those in lateral portions of lattice shell circular and small. Four pairs of large subpolygonal sagittal-lattice pores that have serrate borders in some specimens. Most skeletons have small tubercles at junctions of lattice bars and sagittal ring. Some skeletons have slight depressions at junctions of lattice bars. No vertical, frontal, or sternal pores.

Representatives of Liriospyris elevata n. sp. differ from those of Giraffospyris angulata (Haeckel) and G. circumflexa (Goll, in press) in having no basal spines and from skeletons of L. mutuaria n. sp. in having three lattice bars that are joined to the sagittal ring. Skeletons of the type-species of Liriospyris, L. clathrata, have a sternal bar, sternal pore, and five lattice bars that are joined to the sagittal ring.

Representatives of Liriospyris elevata are in all the samples between AMPH 91P, 60-62 cm. (middle Miocene) and AMPH 102P, 482-484 cm. (upper Miocene).

HOLOTYPE: USNM 650376, from core sample PROA 97P, 478-480 cm. (middle Miocene).

Picture: 4,5,8,9—Liriospyris elevata Goll, n. sp. Front, left-side, basal, and back views, respectively, of holotype. USNM 650376; core sample PROA 97P, 478-480 cm.

Goll 1968











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