Paradoxiconus

{{Short description|Extinct genus of problematic fossils}}

{{Automatic taxobox

| fossil_range = Cambrian Stage 2

| taxon = Paradoxiconus

| subdivision_ranks =

| subdivision =

| type_species = Paradoxiconus typicalis

| authority = Qian et al., 2001

}}

Paradoxiconus is a taxon of problematic spine with a smooth tip and a striated and ornamented base,{{cite journal | last1 = Pyle | first1 = Leanne J. | last2 = Narbonne | first2 = Guy M. | last3 = Nowlan | first3= Godfrey S. | last4= Xiao | first4= Shuhai | last5= James | first5= Noel P. | year = 2006 | title = Early Cambrian Metazoan eggs, embryos, and phosphatic microfossils from northwestern Canada | journal = Journal of Paleontology | volume = 80 | issue = 5 | pages = 811–825 | jstor = 4095162 | doi = 10.1666/0022-3360(2006)80[811:ecmeea]2.0.co;2| doi-access = free }}{{Cite journal | title = Helmet—like Fossils from the Basal Cambrian Phosphoric Strata of China| url=http://article.geobiology.cn/lunwen/%E6%9C%9F%E5%88%8A%E8%AE%BA%E6%96%87/%E5%AF%92%E6%AD%A6%E7%B3%BB/017/%E6%88%91%E5%9B%BD%E5%AF%92%E6%AD%A6%E7%B3%BB%E5%BA%95%E9%83%A8%E5%90%AB%E7%A3%B7%E5%B2%A9%E7%B3%BB%E4%B8%AD%E7%9A%84%E6%A3%98%E7%81%B0%E7%8A%B6%E5%8C%96%E7%9F%B3.pdf |journal = Acta Palaeontologica Sinica |year=2001|issue=4|volume=40|pages=486–496}} {{Dead link|date=June 2018}} known from phosphatic fossils from the middle Meishucunian.{{Cite journal | last1 = Li | first1 = G. | last2 = Steiner | first2 = M. | last3 = Zhu | first3 = X. | last4 = Yang | first4 = A. | last5 = Wang | first5 = H. | last6 = Erdtmann | first6 = B. D. | doi = 10.1016/j.palaeo.2007.03.017 | title = Early Cambrian metazoan fossil record of South China: Generic diversity and radiation patterns | journal = Palaeogeography, Palaeoclimatology, Palaeoecology | volume = 254 | pages = 229–249 | year = 2007 }}