Melanorosauridae

Lore & Background

Friedrich von Huene coined the name Melanorosauridae in 1929, placing it within the infraorder 'Prosauropoda' alongside the Anchisauridae, Plateosauridae, and Thecodontosauridae. Later revisions have changed the composition of these families. Galton and Upchurch (2004) considered Camelotia, Lessemsaurus, and Melanorosaurus as members of the Melanorosauridae. However, a more recent study by Yates (2007) indicated that the melanorosaurids were instead early sauropods. Subsequent studies have either considered Melanorosaurus and Camelotia as closely related, or have recovered them as unrelated, reflecting ongoing uncertainty in their relationships.

Reader's Guide

The Melanorosauridae represent a key group in understanding the early evolution of sauropodomorph dinosaurs. Originally classified as prosauropods by Huene, the family has been subject to significant taxonomic revision. The work of Galton and Upchurch (2004) maintained them as a distinct family within Prosauropoda, but Yates (2007) challenged this by proposing that melanorosaurids were actually early sauropods, shifting their position in dinosaur phylogeny. This debate highlights the fluid nature of dinosaur classification, especially for Triassic and Early Jurassic forms. The uncertainty over whether Melanorosaurus and Camelotia are closely related or unrelated further underscores the incomplete understanding of these animals. Their significance lies in their transitional position between basal sauropodomorphs and true sauropods, making them crucial for studies of sauropod origins and the evolution of gigantism.

Did You Know?

• The name Melanorosauridae was coined by Friedrich von Huene in 1929.
• Huene assigned the Melanorosauridae to the infraorder 'Prosauropoda'.
• Yates (2007) indicated that melanorosaurids were instead early sauropods.