Echinoids, Gigantic Polychaetes and Others | New Species Reported this week

The week that just ended was particularly rich in descriptions of new invertebrate fossil species and of new microfossils. The new species reported come from Morocco, USA, China, Italy, France, Spain, Canada, Myanmar and Australia. A polychaete, Websteroprion armstrongi gen. et sp. nov., from the Lower-Middle Devonian of Ontario, Canada, reported in the beginning of the week in Nature, took front stage in the news and in specialized forums and discussions because of its gigantism and the possession of the largest jaws ever recorded in this group.


Adrisiops weugi gen. et sp. nov. Detail. Fig. 7 (Van Viersen et al.)

Full account of fossil species reported this week:

  1. Eotaria citrica, sp. nov., a new stem otariid from the upper Burdigalian to lower Langhian of the “Topanga” formation of Southern California, was reported in PeerJ (23th February 2017). Click for the full-text of this article.
  2. Sengelia radicans gen. et sp. nov., an Early Devonian lycophyte from the Beartooth Butte Formation (Wyoming, USA), was reported in the Annals of Botany (22th February 2017). Click for the web page of this article.
  3. Bellohelorus fortis gen. et sp. nov., Novhelorus macilentus gen. et sp. nov., and Protocyrtus parilis sp. nov., helorid wasps (Hymenoptera, Proctotrupoidea) from the Early Cretaceous of China, were reported in Alcheringa (21th February 2017). Click for the web page of this article.
  4. Tiborella tribullata sp. nov., Baratuna lucana sp. nov., Hozmadia lagonegroensis sp. nov., Hozmadia (?) simplex sp. nov., Bulbocyrtium multiporatum sp. nov., Planispinocyrtis curta sp. nov., six Middle Triassic radiolarian species from the Monte Facito Formation (Lagonegro succession, Southern Apennines, Italy), were reported in the Revue de Micropaléontologie (21th February 2017). Click for the web page of this article.
  5. Plesiodimylus ilercavonicus sp. nov., a new species of Plesiodimylus (Dimylidae, Eulipotyphla, Mammalia)from the Early Miocene of Spain, was reported in Historical Biology (21th February 2017). Click for the web page of this article.

    Detail of an artistic reconstruction showing Websteroprion armstrongi gen. et sp. nov. attacking a fish in the Devonian sea. (Image credit: James Ormiston.)

  6. Websteroprion armstrongi gen. et sp. nov., a eunicidan polychaete from the Lower-Middle Devonian Kwataboahegan Formation of Ontario, Canada, was reported in Nature (21th February 2017). Click for the web page of this article.
  7. Cretadilar olei gen. et sp. nov. and Burmopsychops groehni sp. nov. (Neuroptera: Dilaridae) are described from the Late Cretaceous (earliest Cenomanian/late Albian) Burmese amber in Cretaceous Research (21th February 2017). Click for the web page of this article.
  8. Ulphaceaster sarthacensis, gen. et sp. nov., an archiaciid echinoid from the Cenomanian of Sarthe (France), was reported in the Annales de Paléontologie (20th February 2017). Click for the web page of this article.
  9. Morocops spinifer sp. nov. and Adrisiops weugi gen. et sp. nov., phacopine trilobites recorded from upper Emsian strata in Morocco, were reported in the Bulletin of Geosciences (20th February 2017). Click for the full-text of this article.
  10. Monostychia macnamarai, Monostychia alanrixi, and Monostychia robertirwini, three new species of the extinct echinoid genus Monostychia Laube, 1869 are described from the middle Miocene Colville Sandstone of the Eucla Basin, Western Australia, in Alcheringa (19th February 2017). Click for the web page of this article.
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Lurdes Fonseca

Assistant Professor and Researcher at University of Lisbon
Sociologist (PhD), Paleontologist (Researcher in Micropaleontology), Majors in Sociology and Biology, Minor in Geology. Main interests in Paleontology: Microfossils, Molecular fossils, Paleobiology and Paleoecology. (read more about me)