Cannibalism in a small growth stage of the Early Permian branchiosaurid Apateon gracilis (Credner, 1881) from Saxony

IF 1.4 4区 地球科学 Q3 Earth and Planetary Sciences
Florian Witzmann
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引用次数: 3

Abstract

An almost complete specimen of the branchiosaurid temnospondyl Apateon gracilis (Credner, 1881) with a skull length of approximately 7 mm from the Early Permian Döhlen Basin in Saxony is described that possesses a nearly complete conspecific specimen of approximately 4 mm skull length in its digestive tract. This is the first evidence of cannibalistic behaviour in small growth stages of branchiosaurids, whose dentition and hyobranchial morphology suggest adaptations to the capture of small invertebrates and feeding on small phyto- and zooplankton by filtering from the water. Therefore, cannibalism in small branchiosaurids certainly represents an exceptional case, possibly triggered by unfavourable environmental conditions. (© 2009 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim)

萨克森早二叠世支龙Apateon gracilis小生长阶段的同类相食(Credner, 1881)
本文描述了萨克森州早二叠纪Döhlen盆地中一个几乎完整的头骨长度约为7毫米的temnospondyl Apateon gracilis (Credner, 1881)的标本,其消化道中有一个几乎完整的同种标本,头骨长度约为4毫米。这是鳃龙在小生长阶段同类相食行为的第一个证据,它们的牙齿和鳃部形态表明它们适应捕捉小型无脊椎动物,并通过过滤水来捕食小型植物和浮游动物。因此,小型支龙类的同类相食当然是一种特例,可能是由不利的环境条件引发的。(©2009 WILEY-VCH Verlag GmbH &KGaA公司,Weinheim)
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来源期刊
Fossil Record
Fossil Record PALEONTOLOGY-
CiteScore
2.50
自引率
7.10%
发文量
18
审稿时长
>12 weeks
期刊介绍: Fossil Record (FR) is the palaeontological journal of the Museum für Naturkunde Berlin. This journal was founded in 1998 under the name Mitteilungen aus dem Museum für Naturkunde Berlin, Geowissenschaftliche Reihe and appears with two issues each year. Fossil Record publishes original papers in all areas of palaeontology including the taxonomy and systematics of fossil organisms, biostratigraphy, palaeoecology, and evolution. All taxonomic groups are treated, including invertebrates, microfossils, plants, and vertebrates.
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