Bajaichthys elegans from the Eocene of Bolca (Italy) and the overlooked morphological diversity of Zeiformes (Teleostei, Acanthomorpha)
Bajaichthys elegans from the Eocene of Bolca (Italy) and the overlooked morphological diversity of Zeiformes (Teleostei, Acanthomorpha)
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来自博尔卡(意大利)始新世的秀丽隐杆线虫和被忽视的 Zeiformes(Teleostei、Acanthomorpha)形态多样性
DOI:
10.1111/pala.12280
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发表时间:
2017
期刊:
影响因子:
2.6
通讯作者:
Davesne D
中科院分区:
文献类型:
--
作者:
Davesne D
The Eocene (Ypresian) fauna of Bolca, Italy yields a famous assemblage of marine tropical teleosts. One of the most anatomically distinctive teleosts from Bolca is the enigmatic †Bajaichthys elegans, generally interpreted as a member of Lampridiformes (oarfishes and their allies). Re‐examination of the type and only specimen of †Bajaichthyscontradicts this attribution, and we propose that its original description as a member of Zeiformes (dories) was in fact correct. †Bajaichthysbears numerous derived features of zeiforms not found in lampridiforms, including: a pelvic spine, a first vertebra closely associated with the neurocranium, and a reduced metapterygoid not contacting the quadrate. Lampridiform‐like attributes, including a greatly elongated ascending process of the premaxilla, are known to be convergent between this group and Zeiformes. Using a combination of morphological and molecular data, we confirm this revised interpretation and resolve the position of †Bajaichthyswithin zeiform phylogeny. In terms of overall shape, the very elongate †Bajaichthyscontrasts with deep‐bodied Zeiformes and probably had distinctive ecological habits. Our inferred placement of †Bajaichthysand other fossil taxa with extended caudal peduncles (e.g. †Archaeozeus) suggests that the elongate morphotype is ancestral for Zeiformes as a whole, and that the deep‐bodied geometry typical of extant taxa probably appeared several times independently. However, these inferences must be considered preliminary due to low support for patterns of relationships within Zeiformes. The systematic reattribution of †Bajaichthysexpands the taxonomic diversity of the Bolca fauna as well as the morphological and ecological diversity of the zeiform clade.
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DOI:
--
发表时间:
1992
期刊:
影响因子:
--
作者:
M. Stiassny;J. Moore
通讯作者:
J. Moore
影响因子:
2.1
作者:
M. Schlüter;T. Steuber;M. Parente
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M. Parente
DOI:
--
发表时间:
1984
期刊:
影响因子:
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作者:
D. Rosen
通讯作者:
D. Rosen
DOI:
--
发表时间:
--
期刊:
影响因子:
--
作者:
C. Regan
通讯作者:
C. Regan
影响因子:
2.8
作者:
Donald Davesne;M. Friedman;V. Barriel;G. Lecointre;P. Janvier;C. Gallut;O. Otero
通讯作者:
O. Otero