Protobalistum Temporal range: | |
---|---|
![]() | |
![]() | |
Artist's reconstruction | |
Scientific classification | |
Kingdom: | |
Phylum: | |
Class: | |
Order: | |
Family: | |
Genus: | Protobalistum |
Species: | P. imperiale |
Binomial name | |
Protobalistum imperiale | |
Protobalistum imperiale is an extinct prehistoric tetraodontid bony fish that lived from the Lutetian epoch of Eocene Monte Bolca. [1]
In life, it would have resembled a compressed boxfish with five massive spines along the anterior-dorsal side, with the longest spine directly above the forehead, and the shortest spine directly in front of the dorsal fin. It is distinguished from its close, sympatric relative, Spinacanthus , in that its scales are large, and form a sort of armor. (In S. cuneiformis, the individual scales are relatively small, and do not touch each other).
Protobalistum imperiale and Spinacanthus were a part of the ecosystem of the lagoon that would become Monte Bolca. It has been suggested that, because of their similarity to boxfish, and due to their close relation to modern-day triggerfish, spinacanthids may have preyed on shellfish and small fish.
Monte Bolca is a lagerstätte near Verona, Italy that was one of the first fossil sites with high quality preservation known to Europeans, and is still an important source of fossils from the Eocene.
The Gempylidae are a family of perciform fishes commonly known as snake mackerels or escolars. The family includes about 25 species.
Mene rhombea is an extinct perciform fish belonging to the family Menidae. During the Middle Eocene, about 48 to 40 mya, these fishes lived in the Tethys Ocean, a large tropical sea in the area corresponding to the current Mediterranean. This ocean was extended between the continents of Gondwana and Laurasia. At this time, where Monte Bolca is today, M. rhombea, and its relative, M. oblonga, lived in a tropical lagoon.
Zignoichthys oblongus is an extinct prehistoric relative of the pufferfish and porcupine fish that lived during the Lutetian epoch of the Eocene. Z. oblongus' fossils are found from the Monte Bolca lagerstätte of what is now Italy.
Eospinus daniltshenkoi is an extinct tetraodontid bony fish from the Eocene. Its fossils are from the Danata Formation lagerstatten of Ypresian Turkmenistan.
Euzaphlegidae is a family of extinct escolar-like fish closely related to the snake mackerels. Fossils of euzaphlegids are found from Paleocene to Late Miocene-aged marine strata of Europe, the Caucasus Mountains, India, Iran, Turkmenistan, Italy, and Southern California.
Ceratoichthys pinnatiformis is an extinct species of lookdown-like prehistoric jackfish that lived during the Lutetian epoch, of the Middle Eocene of Monte Bolca, Italy.
Proaracana dubia is an extinct, prehistoric aracanid boxfish that lived during the Lutetian of middle Eocene Monte Bolca.
Spinacanthus cuneiformis is an extinct prehistoric tetraodontid bony fish that lived from the Lutetian epoch of Eocene Monte Bolca.
Paranguilla tigrina is an extinct prehistoric eel that lived during the Lutetian epoch of the Eocene, in what is now Monte Bolca.
Bolcyrus is an extinct genus of prehistoric bony fish that lived from the early to middle Eocene.
Ductor is an extinct genus of prehistoric ray-finned fish that lived from the early to middle Eocene. Fossils are found in Monte Bolca.
Eolactoria sorbinii is an extinct prehistoric boxfish that lived during the Lutetian epoch of the middle Eocene, in Monte Bolca. It had two pairs of long spines, one over each eye, and one pair beneath the anal and caudal fins, arranged very similarly to those possessed by the modern genus Lactoria, but were, in comparison, much longer. E. sorbinii had a fifth spine between the two eye-spines, arranged and looking very much like a nose.
Archaephippus is an extinct genus of prehistoric spadefish that lived from the early to middle Eocene. Several exquisitely preserved fossils have been found from the Monte Bolca lagerstatten.
Eozanclus brevirostris is an extinct relative of the Moorish idol that lived during the late Ypresian epoch of the Eocene in what is now Monte Bolca, northern Italy. It differs from its living relative by having a much shorter snout.
Psettopsis subarcuatus is an extinct, prehistoric moonyfish that lived during the Lutetian epoch of Monte Bolca, Italy.
Eoplatax is an extinct genus of prehistoric spadefish that lived during the Lutetian of Monte Bolca. They are closely allied to the extant genus, Platax, more commonly known as "batfish."
Sparnodus is an extinct genus of prehistoric perciform fish in the family Sparidae. Species of this genus were nektonic carnivore. These fishes lived in the Cenozoic Era, in Oligocene and Paleocene.
Palimphyes is an extinct genus of prehistoric euzaphlegid bony fish related to the escolars and snake mackerels. The various species lived as deepwater mesopelagic predators in the Tethys and Paratethys oceans, with fossils of ten species found in Paleocene to Oligocene strata of the Swiss Alps, the Carpathian and Caucasus Mountains, Iran, India, and Turkmenistan.
Spinacanthidae is an extinct prehistoric family of tetraodontid bony fish that lived from the Lutetian epoch of Eocene Monte Bolca.