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Advanced Palaeontological Science

Palaeontology

A rigorous examination of evolutionary history, taphonomy, and stratigraphy.

science fossils evolution

8 Questions Hard Ages 16+ Jul 16, 2026

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About this Study Set

This study set covers Palaeontology through 8 practice questions. A rigorous examination of evolutionary history, taphonomy, and stratigraphy. Every question includes the correct answer so you can learn as you go — pick any format above to get started.

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1 Which specific clade of archosaurs is defined by the presence of a perforate acetabulum and an elongated deltopectoral crest on the humerus?

A Pseudosuchia
B Dinosauria
C Pterosauria
D Ornithodira

2 In the context of the Cambrian Explosion, which fossil assemblage is most noted for preserving soft-bodied organisms via Burgess Shale-type carbonaceous film preservation?

A Chengjiang biota
B Ediacara biota
C Doushantuo Formation
D Nama Group

3 The 'Great Unconformity' represents a significant gap in the geological record globally; which biological transition is often associated with the strata immediately overlying it?

A The rise of the first eukaryotes
B The proliferation of complex metazoans
C The Devonian terrestrialization
D The K-Pg extinction recovery

4 Which mineral replacement process occurs when the internal structure of wood is preserved at the cellular level by silica, often via hydrothermal fluids?

A Carbonization
B Permineralization
C Silicification
D Replacement

5 What is the primary diagnostic feature used to distinguish members of the subclass Ornithischia from Saurischia?

A The presence of gastroliths
B The orientation of the pubis bone
C The development of feathers
D The tooth-to-jaw ratio

6 In palaeoclimatology, the delta 18O (δ18O) ratio found in marine carbonate microfossils is primarily used as a proxy for which variable?

A Atmospheric CO2 concentrations
B Global ice volume and water temperature
C Salinity levels in estuarine environments
D Primary productivity of phytoplankton

7 The transition from lobe-finned fish to tetrapods is best exemplified by which Devonian-aged genus possessing both fish-like scales and tetrapod-like limb bones?

A Acanthostega
B Ichthyostega
C Tiktaalik
D Eusthenopteron

8 Which of the following describes the 'Lazarus taxon' phenomenon in the fossil record?

A Rapid evolutionary radiation following an extinction event
B The reappearance of a taxon in the fossil record after a period of apparent absence
C The convergent evolution of unrelated species in isolated ecosystems
D The fossilization of trace fossils instead of body fossils

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