Gen. indet.
- Dataset
- Middle Eocene vertebrate fauna from the Aridal Formation, Sabkha of Gueran, southwestern Morocco
- Rank
- GENUS
Classification
- genus
- Gen
description
DESCRIPTION This proximal fragment of fin spine includes articular processes and a proximal portion of the shaft. The shaft is smooth and shows a lentoid cross-section. The anterior surface is dissymmetrical, the right half showing a depression. The posterior surface is crossed by a thin posterior sulcus. The lumen is well-marked but the basal bar, which extends from the two lateral articular processes, is broken. The anterior and posterior articular processes are not very developed, but they were probably smoothed by erosion.
discussion
REMARKS Based on the absence of ornamentation and the morphology of the articular processes, the spine Bouj- 371 is comparable to unpaired fin spines of extant percomorphs, like serranids or latids.
materials_examined
EXAMINED MATERIAL. — FSAC Bouj- 371, (Fig. 5 E), incomplete fin spine.