The plagiosaurid temnospondyl Plagiosuchus pustuliferus (Amphibia: Temnospondyli) from the Middle Triassic of Germany: anatomy and functional morphology of the skull
The plagiosaurid temnospondyl Plagiosuchus pustuliferus (Amphibia: Temnospondyli) from the Middle Triassic of Germany: anatomy and functional morphology of the skull
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DOI：
10.1111/j.1096-3642.2008.00444.x
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发表时间：
2009-02-01
影响因子：
2.8
通讯作者：
Gastou, Stephanie
中科院分区：
文献类型：
--
作者：
Damiani, Ross;Schoch, Rainer R.;Gastou, Stephanie
根据新发现的头骨和下颌骨材料，详细描述了来自德国中三叠世的斜龙科斜龙科斜背鳄的颅骨解剖结构。高度衍生的头骨的特点是巨大的眶颞窗孔、眶周骨的减少——前额骨、后额骨和（可能）眶后骨的丢失——以及颈骨的扩张以占据大部分颅骨外侧边缘。腹侧极长的颞下空腔与下颌骨细长的内收肌窝相关。头骨和下颌骨的牙列发育微弱。骨化的角鳃和“鳃小齿”表明生命中存在开放的鳃裂。 P. pustuliferus 颅骨形态的显着差异凸显了斜龙科中非凡的颅骨多样性，这在 Temnospondyli 中可能是无与伦比的。头骨的具体结构特征——包括极短的边缘齿列、微弱的牙列和内收肌组织的细长室——以及下鳃骨骼的证据表明，P. pustuliferus 利用定向吸食来捕捉猎物。 (C) 2009 年伦敦林奈学会，林奈学会动物学杂志，2009, 155, 348-373。
The cranial anatomy of the plagiosaurid temnospondyl Plagiosuchus pustuliferus, from the Middle Triassic of Germany, is described in detail on the basis of a newly discovered skull and mandibular material. The highly derived skull is characterized by huge orbitotemporal fenestrae, a reduction of the circumorbital bones - the prefrontal, postfrontal and (probably) postorbital are lost - and the expansion of the jugal to occupy most of the lateral skull margin. Ventrally the extremely long subtemporal vacuities correlate with the elongate adductor fossa of the mandible. The dentition is feebly developed on both skull and mandible. Ossified ?ceratobranchials and 'branchial denticles' indicate the presence of open gills clefts in life. The remarkably divergent cranial morphology of P. pustuliferus highlights the extraordinary cranial diversity within the Plagiosauridae, probably unsurpassed within the Temnospondyli. Specific structural aspects of the skull - including an extremely short marginal tooth row, feeble dentition and an elongated chamber for adductor musculature - together with evidence for a hyobranchial skeleton, suggests that P. pustuliferus utilized directed suction feeding for prey capture. (C) 2009 The Linnean Society of London, Zoological Journal of the Linnean Society, 2009, 155, 348-373.