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Short Communications

Egg preservation in an Eocene stingray (Myliobatiformes, Dasyatidae) from Italy

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Article: e1578967 | Received 20 Nov 2018, Accepted 15 Jan 2019, Published online: 09 Apr 2019

Figures & data

FIGURE 1. MGGC 7456, Tethytrygon muricatus (Volta, Citation1796) from the Pesciara di Bolca locality. A,B, photographs of specimen under A, natural and B, UV light; C, interpretive drawing of major anatomical structures preserved. Abbreviations: cs, cervicothoracic synarcual; mc, Meckel’s cartilage; mes, mesopterygium; met, metapterygium; nc, nasal capsules; pb, puboischiadic bar; pf, pelvic fins; pro, propterygium; rad, pectoral radials; tf, tail folds; ts, tail sting; vc, vertebral centra.

FIGURE 1. MGGC 7456, Tethytrygon muricatus (Volta, Citation1796) from the Pesciara di Bolca locality. A,B, photographs of specimen under A, natural and B, UV light; C, interpretive drawing of major anatomical structures preserved. Abbreviations: cs, cervicothoracic synarcual; mc, Meckel’s cartilage; mes, mesopterygium; met, metapterygium; nc, nasal capsules; pb, puboischiadic bar; pf, pelvic fins; pro, propterygium; rad, pectoral radials; tf, tail folds; ts, tail sting; vc, vertebral centra.

FIGURE 2. Soft tissue preservation in the abdominal region of MGGC 7456. A, UV light photograph showing the duct bearing a minimum of four eggs; B, interpretive drawing of anatomical structures; C, detail photograph of the three eggs showing exquisite preservation of soft tissues; D, the same image under UV light. Abbreviations: cs, cervicothoracic synarcual; e, eggs; mes, mesopterygium; met, metapterygium; ns, neural spines; pb, puboischiadic bar; pro, propterygium; rad, pectoral radials; ss, suprascapulae; vc, vertebral centra. Scale bars equal 50  mm (A,B) and 10  mm (C,D).

FIGURE 2. Soft tissue preservation in the abdominal region of MGGC 7456. A, UV light photograph showing the duct bearing a minimum of four eggs; B, interpretive drawing of anatomical structures; C, detail photograph of the three eggs showing exquisite preservation of soft tissues; D, the same image under UV light. Abbreviations: cs, cervicothoracic synarcual; e, eggs; mes, mesopterygium; met, metapterygium; ns, neural spines; pb, puboischiadic bar; pro, propterygium; rad, pectoral radials; ss, suprascapulae; vc, vertebral centra. Scale bars equal 50  mm (A,B) and 10  mm (C,D).
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