ALT Cover of the Museum of Comparative Zoology at Harvard University Annual Report for 2023-2024, featuring a close-up image of a Kronosaurus fossil jaw with teeth

ALT Promotional image for the Museum of Comparative Zoology at Harvard, featuring x-ray images of various insects and a job advertisement stating 'WE'RE HIRING! Full and Part-Time Curatorial Assistants.'

ALT Two photographs at the top show experimental tank containing sand and priapulid worms, which have created burrows seen here in cross-section. Arrows indicate direction of movement. Diameter of coin at the bottom of each image is 2.4 cm. In the lower row are two field photographs of trace fossils. On the left, a treptichnid from the terminal Ediacaran of Namibia (Scale bar at top right is 0.5 cm). In the middle, Treptichnus pedum from the early Cambrian of Namibia (scale bar at top right is 5 cm). On the right, a schematic diagram of the T. pedum 3D structure, with solid line numbered arrows denoting individual probe order offset by 20°–40° and a longer dotted line showing general direction of movement.

ALT Badenian palaeogeographic map (centre) showing the position of Central Paratethys, surrounded by six black and white images of fossil ascidian spicules, all with a scale bar in the upper right corner of the image). Top row, from left to right: Trididemnum sp. (ZPAL Tu. 1/UG43-66) scale bar 20 microns; Didemnum sp. 5 (ZPAL Tu. 1/UG46-147) scale bar 10 microns; Didemnidae indet. 3 (ZPAL Tu. 1/UG43-114) scale bar 10 microns. Bottom row, left to right: Didemnidae indet. 4 (ZPAL Tu. 1/UG46-126) scale bar 10 microns; Didemnum sp. 6 (ZPAL Tu. 1/UG46-62) scale bar 20 microns; Lissoclinum cf. perforatum (ZPAL Tu. 1/UG51-08) scale bar 10 microns.

ALT https://www.onlinefossilshop.com/shop/arthropods/upper-cambrian-softbodied-arthropod-falcatamacaris/