Placocystella in the Early Devonian (Lochkovian) of central Victoria

Abstract

Jell, P.A., 2013. Placocystella in the Early Devonian (Lochkovian) of central Victoria. Alcheringa, 567–569. ISSN 0311–5518.

The South African allanicytidiid mitrate carpoid Placocystella africana (Reed) is recorded for the first time from Australasia having been collected from a Lochkovian bed of the Humevale Formation at Mooroolbark in eastern Melbourne. The Southern Hemisphere Allanicytidiidae incorporating five monospecific genera in Brazil, South Africa, Tasmania, Victoria and New Zealand is now known to have a species in common between South Africa and Victoria. The previously suggested synonymy of these five is revised to accept Placocystella, Tasmanicytidium, Allanicytidium and Australocystis (but not Notocarpos) as synonymous so that the family contains Placocystella with four species and monospecific Notocarpos.

Peter A. Jell [[email protected]], School of Earth Sciences, The University of Queensland, St Lucia Queensland 4072, Australia. Received 10.4.2013; revised 6.6.2013; accepted 17.6.2013.

维多利亚中部早泥盆世 (Lochkovian阶) Placocystella

南非allanicytidiid mitrate 海果类Pacoystella africana (Reed)首次记录于澳亚区, 采自墨尔本东部Mooroolbark的Humevale组内Lochkovian岩层。南半球的Allanicytidiidae包括巴西、南非、维多利亚和新西兰的五个单种属, 现在知道还包括一个南非和维多利亚的共有种。我们对以前所提出的这五个属的同义名加以修正, 认为Placocystella、Tasmanicytidium、Allanicytidium和Australocystis (而不是Notocarpos) 是同义名。因此, 这个科包括具四个种的属Placocystella和单种属 Notocarpos。

Key words:

• Placocystella
• Allanicytidiidae
• Lochkovian
• Victoria