Calathus melanocephalus is a species of blackish-red coloured ground beetle from the Platyninae subfamily that can be found everywhere in Europe except for Monaco, San Marino, Vatican City and various European, Asian and African islands. The species is mostly black coloured and have red thorax. It is found in bare, sandy soil, under stones, and in leaf litter. Its flying time is from April to September.
Calathus brevis is a species of ground beetle from the Platyninae subfamily that is endemic to Spain.
Calathus bosnicus is a species of ground beetle from the Platyninae subfamily that is can be found in Albania and Bosnia and Herzegovina.
Calathus distinguendus is a species of ground beetle from the Platyninae subfamily that can be found in Bulgaria, Greece, Kosovo, Moldova, Montenegro, North Macedonia, Serbia, Voivodina, southern part of Russia and European part of Turkey. It is also found in Georgia, Asia Minor, Caucasus, and Crimea. It have 1 millimetre (0.039 in) long genitalia.
Calathus fuscipes is a species of ground beetle from the Platyninae subfamily that can be found everywhere in Europe except for Andorra, Monaco, San Marino, Vatican City and various islands.
Calathus hispanicus is a species of ground beetle from the Platyninae subfamily that can be found in Portugal and Spain.
Calathus jakupicensis is a species of ground beetle from the Platyninae subfamily that is endemic to North Macedonia.
Calathus korax is a species of ground beetle from the Platyninae subfamily that is endemic to Greece.
Calathus longicollis is a species of ground beetle from the Platyninae subfamily that can be found in Bulgaria, Greece, Russia, Armenia, Cyprus, Georgia, Israel, Lebanon and Turkey.
Calathus luctuosus is a species of ground beetle from the Platyninae subfamily that can be found in Andorra, France, Portugal and Spain.
Calathus mirei is a species of ground beetle from the Platyninae subfamily that is endemic to Spain.
Calathus montivagus is a species of ground beetle from the Platyninae subfamily that can be found in Italy and Sicily.
Calathus syriacus is a species of ground beetle from the Platyninae subfamily that can be found on Cyprus, in Ukraine and in southern part of Russia. It is also found in Azerbaijan, Armenia, Georgia, Greece, Iran, Israel, Lebanon, Syria and Turkey.
Calathus vivesi is a species of ground beetle from the Platyninae subfamily that is endemic to Spain.
Calathus carvalhoi is a species of ground beetle from the Platyninae subfamily that is endemic to the Azores.
Calathus fimbriatus is a species of ground beetle from the Platyninae subfamily that is endemic to Madeira.
Calathus obliteratus is a species of ground beetle from the Platyninae subfamily that is endemic to the Canary Islands.
Calathus is a proposed student-designed Ceres sample-return mission, that would consist of an orbiter and a lander with an ascent module. The orbiter would be equipped with a camera, a thermal imager, and a radar; the lander will have a sampling arm, a camera, and a gas chromatograph mass spectrometer. Mission objective is to return maximum 40 g of Ceresian soil. The mission was designed and proposed in 2018 with support of ESA.
Erratus is an extinct genus of marine arthropod from the Cambrian of China. Its type and only species is Erratus sperare. Erratus is likely one of the most basal known arthropods, and its discovery has helped scientists understand the early evolution of arthropod trunk appendages. Some of the stem-arthropods like radiodonts did not have legs, instead they had flap like appendages that helped them swim. Erratus on the other hand had not only flaps but also a set of primitive legs. It also supported the theory that the gills of aquatic arthropods probably evolved into the wings and lungs of terrestrial arthropods later in the Paleozoic.
