• Nomenclatural status

• Description lacking (descriptive statement does not satisfy the requirement of Art. 38.1(a) for a “description or diagnosis”) (nomen invalidum)
• Illustration lacking analysis in place of a written description or diagnosis (prior to 01.01.1908)

User comments

• Doweld Alexander at: 09/13/2019 23:40

  Elasmobranch egg capsules; Xenacanthidae, vide J. Fischer and I. Kogan. Elasmobranch egg capsules Palaeoxyris, Fayolia and Vetacapsula as subject of palaeontological research – an annotated bibliography. Freiberger Forschungshefte C528:75-91. 2008.