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Review of studies of dinosaur reproduction and ontogeny, and of challenges in the studies of dinosaur reproductive biology, is published by Chapelle, Griffin & Pol (2025). [ 15 ] Deiques et al. (2025) report the discovery of new dinosaur tracks from the Upper Jurassic Guará Formation ( Brazil ), including second record of an ankylosaur track ...
Romer's gap is an apparent gap in the Paleozoic tetrapod fossil record used in the study of evolutionary biology, which represent periods from which excavators have not yet found relevant fossils. It is named after American paleontologist Alfred Romer , who first recognised it in 1956.
Joseph John Sepkoski Jr. (July 26, 1948 – May 1, 1999) was a University of Chicago paleontologist.Sepkoski studied the fossil record and the diversity of life on Earth. Sepkoski and David Raup produced a new understanding of extinction events, by developing a statistical approach to the study of taxonomic diversificati
The history of paleontology traces the history of the effort to understand the history of life on Earth by studying the fossil record left behind by living organisms. Since it is concerned with understanding living organisms of the past, paleontology can be considered to be a field of biology, but its historical development has been closely tied to geology and the effort to understand the ...
The nearly complete fossilized remains of a stegosaurus fetched $44.6 million at auction Wednesday, Sotheby's said. The fossil, dubbed “Apex,” is considered to be among the most complete ever ...
Thick horizontal lines signify the existence of a fossil record for the respective time and taxa. Thin lines represent ghost lineages. A ghost lineage is a hypothesized ancestor in a species lineage that has left no fossil evidence, but can still be inferred to exist or have existed because of gaps in the fossil record or genomic evidence.
A new fossil revealing the complete side view of Ptychodus measured nearly 1.5 meters (about 5 feet) in length, suggesting it was from was of a much smaller shark.
What is the exact evolutionary history of flowers and what is the cause of the apparently sudden appearance of nearly modern flowers in the fossil record? Adult form of Facetotecta. The adult form of this animal has never been encountered in the water, and it remains a mystery what it grows into. Origin of snakes. Did snakes evolve from ...