There are fossils that whisper and then there are those that positively sing.
This interesting beauty is a splendid specimen of Anahoplites planus (Mantell, 1822), drawn from Albian-aged sediments at Courcelles-sur-Voire in the Aube region of north-central France.
And sing, it does! There are so many things going on here!
Roughly 105 million years ago, when warm Cretaceous seas spread across much of Europe, this elegant cephalopod cruised ancient waters with all the poise of a creature that knew it wore excellent tailoring.
Anahoplites, first named by Sowerby in 1815, is a delightfully refined genus of hoplitid ammonite.
Its shell is compressed and neatly streamlined, with flat flanks, a narrow venter — sometimes grooved, sometimes smooth — and graceful, flexuous ribs rising from modest umbilical tubercles before ending in a fringe of fine ventrolateral nodes. In short: less brute force, more couture.
Its sturdier cousins in the Hoplitinae favour broader whorls and heavier ornament, but Anahoplites has always struck a finer silhouette.
Today, the genus sits comfortably within the subfamily Anahoplitinae, a taxonomic reshuffle that recognises its more delicate build and distinct style. We find these beauties in Middle to Late Albian rocks from England across Europe and eastward toward the Transcaspian reaches near the Caspian Sea — proof that good design travels.
And what a setting this fossil calls home. The Aube department lends its name to the Albian Stage itself, established by d’Orbigny in 1842.
Here, the stratotype succession includes the Argiles tégulines de Courcelles, some 82 metres of clay-rich deposits, overlain by the Marnes de Brienne, a further 43 metres of marl. Their boundary is marked by a hardened bed, clear in the field to those with sharp eyes and muddy boots.
This particular shell, measuring 113 mm across, did not rest alone on the seafloor. It became a tiny apartment block after death.
Two forms of bryozoans encrust its surface, joined by an oyster and industrious serpulid worms, all leaving their marks upon those handsome flanks. Even in death, it was prime real estate.
Lovingly prepared using potash by José Juárez Ruiz of Spain, this fossil now offers us not just the form of one ammonite, but a snapshot of an ancient community.
One shell. Many stories. And my, what a beauty.
