The Evolutionary Characteristics of Lower Permian Keziliqiman Reefs in the Southwest Margin of Tarim Basin, Northwest China

Figure 9

Types of accessory reef organisms. (a) Rather intact Schwagerina (indicated by the yellow arrow) and Parafusulina (indicated by the red arrow), symbiotic with Colospongia (indicated by blue arrows), among which are accessory Tubiphytes (indicated by green arrows); (b) rather intact Schwagerina (indicated by yellow arrows) and Parafusulina (indicated by red arrows), around which the bioclasts of echinoderms (indicated by blue arrows) and Fenestella (indicated by the green arrow) are visible.

(a)

(b)