A new antiarch, Ningxialepis spinosa. gen. n. sp., is described from the Zhongning Formation (Famennian, Late Devonian) of Shixiagou, Qingtongxia, Ningxia, northwestern China. It is characterized by the presence of X-shaped pit-lines, long obstantic margins, high dorsal median spine of the trunk armour formed from the anterior and posterior median dorsal plates, prominent dorsolateral and ventrolateral ridges of the trunk armour, and the anterior median dorsal plate partly overlapping the anterior dorsolateral plate.

A phylogenetic analysis of the Euantiarcha was performed based on a matrix of 48 characters scored for 25 taxa. The yunnanolepiform Parayunnanolepis and sinolepids Grenfellaspis and Dayaoshania were selected as outgroups, with 22 euantiarch taxa as the ingroup. Based on this phylogenetic analysis, Ningxialepisis placed as the sister taxon to Jiangxilepis in the Family Jiangxilepidae from South China. The Jiangxilepidae is redefined. The close affinity between Ningxialepis and Jiangxilepis further corroborates the geographic proximity between the North China and South China blocks in the Late Devonian.
(2010-08-30)

http://english.cas.cn/ST/RE/re_project/201008/t20100830_58196.shtml

Словарь:
Jiangxi - Цзянси
Yunnan - Юньнань
Ningxia - Нинся

A new basal antiarch, Silurolepis platydorsalis n. gen. n. sp., represented by a large-sized trunk armor and a disassociated anterior median dorsal plate (AMD), is described from the Ludlow (Silurian) of Qujing, Yunnan, southwestern China. It is characterized by its AMD overlapping the posterior median dorsal plate, broad anterior margin of the AMD, and crest-shaped dorsolateral ridge of the trunk armor.

S. platydorsalis represents the first articulated placoderm fish from the Silurian, and amplifies the range of morphological disparity among early antiarchs. On the basis of the available data, the new form is parsimoniously placed at the most basal position of the Antiarcha. It differs from the other antiarchs including yunnanolepiforms in its unique overlap relationship between the AMD and PMD plates, and should represent a newfamily of antiarchs (Silurolepidae n. fam.).
(08/30/2010)

An anterior median dorsal plateof Silurolepis platydorsalis.　(Courtesy of Prof. Zhang et al.)
http://english.ivpp.cas.cn/rh/rp/201008/t20100830_58187.html

Словарь: Qujing - Цюйцзин (городской округ в китайской провинции Юньнань).

П.С: Только сейчас узнал, что почти целый скелет силуролеписа уже описан! Вот название статьи "A basal antiarch (placoderm fish) from the Silurian of Qujing, Yunnan, China"

The specimen is the external mould of an incomplete skull roof, which preserved anterior and posterior extremities but lost the majority of lateral margins. This new form is characterized by small orbits enclosed by skull roof, and long, narrow nuchal plate on which the central and supraorbital sensory canals, middle and posterior pit-lines converge.

Fig.1: Photo (A) and illustrative drawing (B) of Potangaspis parvoculatus, holotype, IVPP V 15050.1 (Credit to Dr. ZHU Min et al )

Phylogenetic analysis corroborates the basal position of the family Antactaspidae amongst the Arthrodira, and suggests a sister group relationship between the new form and Antarctaspis mcmurdoensis from the Middle Devonian of Antarctic. “The new genus of antarctaspids described here adds to the known diversity of the group in East Gondwana (Australia, New Zealand and Antarctica) and South China, and corroborates the biogeographic proximity between these two provinces during the early Emsian,” said Dr. ZHU Min.
It is noteworthy that, although the Antarctaspidae and the Wuttagoonaspidae are placed at the base of the Arthrodira, as successive sister groups to all other arthrodires including phyllolepids, they are not the earliest members of the Arthrodira. The study of closely related petalichthyids and earlier arthrodires such as Szelepis from the Lochkovian of South China and Eskimaspis from the Lochkovian of the Canadian Arctic Archipelago, will help to clarify the early radiation of the Arthrodira.
(2010-07-08) http://english.cas.cn/ST/RE/re_project/201007/t20100709_56199.shtml

Словарь:
Guangxi - Гуанси
Pingguo - Пинго
Potang - Потан (название деревни)

Подробная статья (пдф-ка) о потанасписе есть в Девонской библиотеке!

Добавлено (02.06.2011, 21:45)
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Вот источник
http://www.encyclo.co.uk/define/Titanichthys%20agassizi