Two new parrot species (Psittaciformes) from the early Pliocene of Langebaanweg, South Africa, and their palaeoecological implications

Two new parrot species (Psittaciformes) from the early Pliocene of Langebaanweg, South Africa, and their palaeoecological implications
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南非兰格班韦格上新世早期的两种鹦鹉新种(鹦鹉形目)及其古生态学意义

DOI:
10.1111/ibi.12009
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发表时间:
2013
期刊:
影响因子:
2.1
通讯作者:
Manegold
Manegold
中科院分区:
生物学3区
文献类型:
--
作者:
Manegold

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描述了南非Langebaanweg上新世早期Varswater组中的两个鹦鹉新种(Psittaciformes),其中至少有四个个体的喙突、肱骨、尺骨、腕掌、胫跗和跗被指定为一个新种--爱鸟(Agapornis)。包括雏鸟在内的至少5个个体的额外跗跖骨被称为鹦鹉亚科的一个新属和新种,鹦鹉亚科是非洲特有的分类单元,包括现存的Poicephalus和Psittacus。这两个物种形成了迄今为止非洲最早的鹦鹉地质记录,并记录了Agapornis和Psittacinae分类群的早期多样化。鹦鹉的证据一般,特别是一个假定的草食性物种的爱情鸟,表明林地以及草地在Langebaanweg在上新世早期,这是一致的,在这个网站和周围的palaeoenvironment目前的假设。
Two new parrot species (Psittaciformes) are described from the early Pliocene Varswater Formation at Langebaanweg, South Africa, an area where no parrots currently are found. A coracoid, humeri, ulnae, carpometacarpi, tibiotarsi and tarsometatarsi of at least four individuals are assigned to a new species of lovebirdAgapornis. Additional tarsometatarsi of at least five individuals including a nestling are referred to a new genus and species of Psittacinae, a taxon endemic to Africa comprising the extant generaPoicephalusandPsittacus. Both species form the as yet earliest geological record of parrots in Africa and document the early diversification of the taxaAgapornisand Psittacinae. Evidence for parrots in general, and a putative graminivorous species of lovebird in particular, indicates that woodlands as well as grasslands were present at Langebaanweg during the early Pliocene, which is consistent with current hypotheses on the palaeoenvironment at and around this site.
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