Species

Lockeia amygdaloides (Seilacher, 1953)

Taxon description

Schlirf, 2000

Emended diagnosos. Stout, high-standing, almond-shaped ridges with a smooth surface, tapering at both ends; sometimes showing tall vertical spreite.

Description: Small, stout, almond-shaped ridges with a smooth surface, more or less tapering at both ends. Trace length is 3-9 mm, width 1.5-4 mm, and height 1-3 mm.

Knaust, 2004

Symmetrical, almond-shaped bodies with smooth surface, rounded or pointed at both ends. Maximum width generally varies between 1 and 3 mm, although a few specimens are less than 1mm or up to 4mm wide. Length is generally between 1 and 8 mm; however, some of the bodies continue as short (5–25 mm) Planolites montanus burrows. Height is between 0.5 and 2mm. Specimens are preserved in convex hyporelief on silty shale and may reach a density of 70–80 per 100 cm2. L. amygdaloides differs from similar L. siliquaria and L. avalonensis by its typical stout shape.

Synonymy list
1953     Pelecypodichnus amygdaloides n. g. n. sp. — Seilacher , pp. 105, fig. 10:1; 12:1-3
1990     Pelecypodichnus amygdaloides Seilacher, 1953 — Dam , pp. 138, fig. 9C
1994     Lockeia amygdaloides (Seilacher, 1953) — Kim , pp. 223, fig. 4b, 6
2000     Lockeia amygdaloides (Seilacher, 1953) — Schlirf , pp. 150, fig. 1:1, text fig. 5
Selection of related publications
Knaust, D. 2004. Cambro-Ordovician trace fossils from the SW-Norwegian Caledonides. Geological Journal 39, 1, 1-24. DOI:10.1002/gj.941
Classification
References based on distribution