Ordovician

Just out | Seaweed morphology and ecology during the great animal diversification events of the early Paleozoic: A tale of two floras @ Geobiology

Just out @ Geobiology Seaweed morphology and ecology during the great animal diversification events of the early Paleozoic: A tale of two floras Author(s) S. T. LoDuca, N. Bykova, M. Wu, S. Xiao, Y. Zhao Abstract: Non-calcified marine macroalgae (“seaweeds”) play a variety of key roles in the modern Earth system, and it is likely that they were also important players in the geological past, particularly during critical transitions such

Just out | The diploporite blastozoan Lepidocalix pulcher from the Middle Ordovician of northern Algeria: Taxonomic revision and palaeoecological implications @ Acta Palaeontologica Polonica

Just out @ Acta Palaeontologica Polonica The diploporite blastozoan Lepidocalix pulcher from the Middle Ordovician of northern Algeria: Taxonomic revision and palaeoecological implications Author(s) Yamouna Makhlouf, Bertrand Lefebvre, Elise Nardin, Ahmed Nedjari, and Christopher R.C. Paul Abstract: We present revision of the taxonomy and palaeoecology of the Ordovician aristocystitid Lepidocalix pulcher from the Zaouïa of Stita (Great Kabylia, Algeria). An emended diagnosis is proposed, highlighting the four-fold ambulacral system and the

Just out | Upper Ordovician conodont biostratigraphy and biofacies from the Sigang section, Neixiang, Henan, central China @ Palaeogeography, Palaeoclimatology, Palaeoecology

Just out @ Palaeogeography, Palaeoclimatology, Palaeoecology Upper Ordovician conodont biostratigraphy and biofacies from the Sigang section, Neixiang, Henan, central China Author(s) Xiuchun Jing, Svend Stouge, Ling Ding, Xunlian Wang, Hongrui Zhou Abstract: The 186-m-thick Shiyanhe Formation exposed at the Sigang section, Neixiang area, Henan Province, central China has been investigated for conodonts. The collected 33 samples yielded 8858 conodont specimens. The conodonts are referred to 15 genera and 34 species, but

Just out | Early Middle Ordovician scolecodonts from north-western Argentina and the emergence of labidognath polychaete jaw apparatuses @ Palaeontology

Just out @ Palaeontology Early Middle Ordovician scolecodonts from north-western Argentina and the emergence of labidognath polychaete jaw apparatuses Author(s) Olle Hints, Petra Tonarová, Mats E. Eriksson, Claudia V. Rubinstein, G. Susana de la Puente Abstract: Scolecodonts provide fossil evidence of the evolution and diversification of jaw-bearing polychaetes from the latest Cambrian onwards. However, their record before the Darriwilian (Middle Ordovician) is scarce worldwide, which limits our understanding of key evolutionary

Just out | Divaricate patterns in Cambro-Ordovician obolid brachiopods from Gondwana @ Historical Biology

Just out @ Historical Biology Divaricate patterns in Cambro-Ordovician obolid brachiopods from Gondwana Author(s) M. Mergl, İ. Hoşgör, I. O. Yilmaz, S. Zamora & J. Colmenar Abstract: A new brachiopod species, Westonia mardini, from the Furongian of Turkey and a new occurrence of Westonia urbiona from the Cambrian Series 3 of Iberian Peninsula are reported. These new finds of ‘westoniids’ collected in Gondwana allow the discussion of the functional morphology of

Just out | Unusual pitted Ordovician brachiopods from the East Baltic: the significance of coarsely pitted ornamentations in linguliforms @ Papers in Palaeontology

Just out @ Papers in Palaeontology Unusual pitted Ordovician brachiopods from the East Baltic: the significance of coarsely pitted ornamentations in linguliforms Author(s) Lars E. Holmer, Leonid E. Popov, Mansoureh Ghobadi Pour, Zhiliang Zhang, Zhifei Zhang Abstract: A characteristic coarsely pitted ornamentation (with pits larger than 0.015 mm across) can be found on some very enigmatic and rare Lower Ordovician phosphatic-shelled linguliform brachiopods, including the paterinid Lacunites balaschovae Gorjansky and the obolid

Just out | Exceptionally preserved conodont apparatuses with giant elements from the Middle Ordovician Winneshiek Konservat-Lagerstätte, Iowa, USA @ Journal of Paleontology

Just out @ Journal of Paleontology Exceptionally preserved conodont apparatuses with giant elements from the Middle Ordovician Winneshiek Konservat-Lagerstätte, Iowa, USA Author(s) Huaibao P. Liu, Stig M. Bergström, Brian J. Witzke, Derek E. G. Briggs, Robert M. McKay, Annalisa Ferretti Abstract: Considerable numbers of exceptionally preserved conodont apparatuses with hyaline elements are present in the middle-upper Darriwilian (Middle Ordovician, Whiterockian) Winneshiek Konservat-Lagerstätte in northeastern Iowa. These fossils, which are associated with

The new whiplash dinosaur from Wyoming | New Species Reported This Week

It was Galeamopus pabsti’s week. The new whiplash dinosaur, a sauropod from the Upper Jurassic of the northern Bighorn Basin in Wyoming (USA), reported in the beginning of this week in Peer J, made headlines all over the world. The identification of this new species was based on the reexamination of a previously found specimen, currently on display at the Aathal Dinosaur Museum, outside Zurich, Switzerland. The researchers took a good look at the museum mainstay and realized it was a previously undescribed species with often-subtle differences from G. hayi, a sauropod they had studied before.

Just out | Two new early balognathid conodont genera from the Ordovician of Oman and comments on the early evolution of prioniodontid conodonts @ Journal of Systematic Palaeontology

Just out @ Journal of Systematic Palaeontology Two new early balognathid conodont genera from the Ordovician of Oman and comments on the early evolution of prioniodontid conodonts Author(s) C. Giles Miller, Alan P. Heward, Angelo Mossoni & Ivan J. Sansom Abstract: Reports of Ordovician conodonts from the Arabian region of the Gondwanan margin are extremely rare. Here we provide a description of the apparatus of two new conodont genera and species,

Just out | Graptolites from glacial erratics of the Laerheide area, northern Germany @ PalZ

Just out @ PalZ Graptolites from glacial erratics of the Laerheide area, northern Germany Author(s) Jörg Maletz, Heinrich Schöning Abstract: Ordovician and Silurian glacial erratics of the Laerheide area (Lower Saxony, north-western Germany) bear well-preserved graptolites. The faunas provide important information on the origin and transport direction of the sediments preserved in a kame, representing the Drenthe stadial of the Saalian glaciation. The faunas even include species not commonly encountered in the successions of