News

414 results

414 results

Ticks on an Eel: Museum Specimen is a First of its Kind

One of Kaylin's projects involves finding ticks attached to animals in MCZ collections and she was recently directed to an eel specimen in our ichthyology collection that was collected over 150 years ago. Read about why this is a notable find in...
ventral view of a tick on a black background with a .1 cm scale bar

Fossils Reveal the World’s Most Persistent Parasite

Those tiny “question marks” etched into ancient shells? They’re not random scratches—they’re the calling cards of a 480-million-year-old parasite! A new study Published in iScience has revealed that a parasite still plaguing modern oysters today has been...
Fossiliferous slab with specimens of the bivalve mollusk Babinka from the Fezouata Shale biota (Early Ordovician) showing evidence of fossilized spionid-like borings

Sea Scorpions Just Got a Lot Older — and a Lot Scarier

A set of spiny fossil limbs pulled from ancient rock in Morocco has pushed the origin story of “sea scorpions” back in time, revealing that these fearsome predators were already highly specialized hunters nearly half a billion years ago. A new study...
a figure showing six views of a fossil sea scorpion

2024-2025 Annual Report of the MCZ

Read about current research grants, research projects making headlines, news from our collections, and more in our annual report on everything and everyone in the MCZ.
a translucent squid on a black background with the text Museum of Comparative Zoology Harvard University Annual Report 2024-2025

Nautilus Reveals Unexpected Sex Chromosome System

Nautiloids—a lineage of ancient, externally-shelled cephalopods that diverged from their octopus and squid relatives over 400 million years ago—once dominated our oceans. Today, this living fossil is restricted to a handful of species in the Southern Indo...
a nautilus swimming