Reconstruction of Palaeocharinus rhyniensis , Image source：Matteo De Stefano/MUSE， CC BY-SA 3.0 。 Age Devonian（Lochkovian-Pragian） 411-408 Ma Taxonomy Kingdom: Animalia Phylum: Arthropoda Class: Arachnida Order: Trigonotarbida Family: Palaeocharinidae Genus: Palaeocharinus Species: Palaeocharinus rhyniensis Morphological description In thin sections of silicified deposits from the Rhynie locality, individuals of Palaeocharinus rhyniensis are most commonly preserved in a f

Cretapsara athanata amber specimen （Image source：Luque, J et al. (2021) ， CC BY 4.0 ） Age Cretaceous（Cenomanian） 99 Ma Taxonomy Kingdom: Animalia Phylum: Arthropoda Class: Malacostraca Order: Decapoda Family: Cretapsaridae Genus: Cretapsara Species: Cretapsara athanata Morphological description Cretapsara athanata has a total body width including appendages of only about 5 mm. The carapace is subhexagonal in outline, approximately 2 mm wide, and nearly as long as it is wi

Reconstruction of Balhuticaris voltae （Image source：Hugo Salais， CC BY-NC-ND 4.0 ） Age Cambrian（between Wuliuan and Drumian） 506 Ma Taxonomy Kingdom: Animalia Phylum: Arthropoda Order: Hymenocarina Family: Odaraiidae Genus: Balhuticaris Species: Balhuticaris voltae Morphological description Balhuticaris voltae is a Cambrian bivalved arthropod characterized by an extremely high number of body segments. Complete individuals can reach up to 24.5 cm in length, which represents