Hederellids are extinct colonial animals with calcitic tubular branching exoskeletons. They range from the Silurian to the Permian and were most common in the Devonian period. They are more properly known as hederelloids because they were originally defined as a suborder by Bassler, who described about 130 species.[2] Although they have traditionally been considered bryozoans, they are clearly not because of their branching patterns, lack of an astogenetic gradient, skeletal microstructure, and wide range in tube diameters.[3] Work continues on assessing the true affinities of hederelloids, but they appear to be most closely related to phoronids and other lophophorates.[4][5]
^Taylor, P.D.; Wilson, M.A (2008). "Morphology and affinities of hederelloid "bryozoans"" (PDF). In Hageman, S.J.; Key, M.M. Jr.; Winston, J.E. (eds.). Bryozoan Studies 2007: Proceedings of the 14th International Bryozoology Conference. Virginia Museum of Natural History. pp. 301–309. Archived from the original (PDF) on 2010-03-26. Retrieved 2011-03-26.
^Bassler, R.S (1939). The Hederelloidea. A suborder of Paleozoic cyclostomatous Bryozoa. pp. 87:25–91. {{cite book}}: |work= ignored (help)
^Wilson, Mark A.; Taylor, Paul D. ""Pseudobryozoans" and the problem of encruster diversity in the Paleozoic". PaleoBios (21 (supplement to no. 2)): 134–135.
^
Taylor, Paul D.; Wilson, Mark A. (2008). Hageman , S.J.; Key, M.M. Jr.; Winston, J.E. (eds.). Morphology and affinities of hederelloid "bryozoans"(PDF). Bryozoan Studies 2007: Proceedings of the 14th International Bryozoology Conference, July 1–8, 2007 (Special Publication 15 ed.). Boone, North Carolina. pp. 301–309. Archived from the original (PDF) on 2010-03-26.
^Taylor, Paul D.; Olev Vinn; Mark A. Wilson (2010). "Evolution of biomineralization in 'Lophophorates'". Special Papers in Palaeontology. 84: 317–333.
Hederellids are extinct colonial animals with calcitic tubular branching exoskeletons. They range from the Silurian to the Permian and were most common...
conodonts, bryozoans, diverse and abundant brachiopods, the enigmatic hederellids, microconchids, and corals. Lily-like crinoids (animals, their resemblance...
echinoid tests (shells), mollusc shells and the rostra of belemnites. Hederellids or Hederelloids are fossilized tubes, usually curved and between 0.1...
brachiopod from Ohio that served as a host substrate for a colony of hederellids. The specimen is 5 cm wide. Syringothyris texta (Hall 1857), dorsal view...
Hederopsis is an extinct genus of the enigmatic hederellids. "Hederopsis Bassler, 1937". Global Biodiversity Information Facility. Retrieved 12 March...
& Wilson in Frey et al. Early Devonian (Pragian) Morocco A reptariid hederellid. The type species is Filihernodia buccina. Haplistion toftanum Sp. nov...