Extinct genus of trilobites
Kongqiaoheia rotundata is an asaphid trilobites of the family Raphiophoridae that lived during the late Caradoc of Inner Mongolia, China. "K. rotundata" was originally grouped with the so-called Taklamakaniinae, a paraphyletic group of tiny, dwarfed raphiophorids that lived in a deepwater environment in what is now the Tarim Basin, including "Pseudampyxina", "Nanshanaspis", and "Taklamakania". Like these other genera, "K. rotundata" has only three thoracic segments, probably due to paedomorphic dwarfism: other raphiophorid trilobites have at minimum five thoracic segments.
Morphology.
As with other "taklamakaniids," "K. rotundata" had a disk-shaped body with a semi-circular cephalon, a bulbous glabellum, and a pair of very long, thin, librigenial spines emanating from the lateral corners of the cephalon. There are a pair of bulbous structures on the pygidium. "K. rotundata" differs from "Taklamakania" by lacking a spine on the anterior of the glabellum. It differs from "Nanshanaspis" in the shapes of the cephalon, glabellum, pygidium and the various glabellal and pygidial furrows. "K. rotundata" differs from "Pseudampyxina" in that the former's glabellum does not protrude anteriorially as the latter's.
References.
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