H. carinatus (Matthew, 1899)[1] (= H. cecrops Walcott)
H. reesei Babcock & Robison 1988 (type)
Haplophrentis is a genus of tiny shelled hyolithid which lived in the Cambrian Period. Its shell was long and conical, with the open end protected by an operculum, from which two fleshy arms called helens protruded at the sides. These arms served to elevate the opening of the shells above the sea floor, acting like stilts.[2]
^ abBabcock, L. E.; Robison, R. A. (1988). "Taxonomy and paleobiology of some Middle Cambrian Scenella (Cnidaria) and Hyolithids (Mollusca) from western North America" (PDF). University of Kansas Paleontological Contributions. 121: 1–22. ASIN B00071LPJW. hdl:1808/3638. OCLC 19610612.
mollusk. Haplophrentis was a filter feeder, using its lophophore to extract organic matter from passing seawater. Specimens of Haplophrentis have been...
radially-arranged clavicles. The soft tissues of the mid-Cambrian hyolith Haplophrentis, from the Burgess Shale and Spence Shale Lagerstätten include a gullwing-shaped...
show that this worm was a predator, often feasting on the hyolithid Haplophrentis (a shelled animal similar to mollusks), generally swallowed them head-first...
sagittiformis was a large bodied gnathiferan from Canada and China Haplophrentis was a hyolith, a group of conical shelled lophotrochozoans that were...
suggested it to be a stem-group ctenophore. Haplophrentis Lophotrochozoa Hyolithia 186 specimens Haplophrentis was a hyolith, a grouping of strange, conical...
Cong et al. (2017). A study on the anatomy of the Cambrian hyolith Haplophrentis, as well as on the phylogenetic relationships of the hyoliths, is published...
D E F G H I J K L M N O P Q R S T U V W X Y Z †Hallograptus †Haplophrentis †Haplophrentis carinatus – type locality for species †Hedraites †Helcionella...