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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

A reappraisal of the pectoral skeleton of lantern sharks (Elasmobranchii: Squaliformes: Etmopteridae)

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Author(s):
Capretz Batista Da Silva, Joao Paulo [1] ; Datovo, Alessio [2]
Total Authors: 2
Affiliation:
[1] Univ Fed Paraiba, Dept Sistemat & Ecol, Ctr Ciencias Exatas & Nat, BR-58051900 Joao Pessoa, Paraiba - Brazil
[2] Univ Sao Paulo, Museu Zool, Lab Ictiol, Sao Paulo, SP - Brazil
Total Affiliations: 2
Document type: Journal article
Source: Journal of Morphology; v. 282, n. 3 JAN 2021.
Web of Science Citations: 0
Abstract

The morphology of the articular region of the pectoral girdle and associated basals in Etmopteridae is revised in light of new evidence provided by taxa unavailable for previous studies. Such studies considered that etmopterids plesiomorphically had a single pectoral articular condyle, and only Etmopterus had two separate ones. Our reanalysis indicates that the possession of two separate condyles, one for the articulation of the propterygium and the second for the meso- and metapterygium, is the most widespread condition in this group. However, the presence of two separate articular condyles is not recovered as a synapomorphy for Etmopteridae. Previous studies also proposed that etmopterids lack a hook-like process on the anteroproximal margin of the anteriormost pectoral basal. We document that the hook-like process is plesiomorphically present in Etmopteridae, thus corroborating the hypothesis of closer relationships between this family and the other squaliforms that also share this process, namely Centrophoridae, Dalatiidae, Oxynotidae, and Somniosidae. (AU)

FAPESP's process: 16/19075-9 - Diversity and evolution of Gymnotiformes (Teleostei, Ostariophysi)
Grantee:Naercio Aquino Menezes
Support Opportunities: Research Projects - Thematic Grants
FAPESP's process: 12/22692-9 - Analysis of the skeletal pattern of paired fins and their respective GIRDLES in species of Chondrichthyes restricted to international collections
Grantee:João Paulo Capretz Batista da Silva
Support Opportunities: Scholarships abroad - Research Internship - Doctorate