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Showing results for tags 'monte bolca'.
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Hello everybody can somebody help me identifying my fossil fish (4cm) I am pretty convinced that it concerns the exellia velifer from monte bolca looking forward to Your replies regards Rienk
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- italy
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From the album: Vertebrates
Carangopsis dorsalis Middle Eocene Monte Bolca Verona Italy length 10cm -
From the album: Vertebrates
Ductor vestenae VOLTA, 1796 Eocene Ypresian Monte Bolca near Verona Italy -
A few weeks ago I was looking for a new case for my iPhone. So I browsed around a Chinese internet shop. I came across cases with fossil pictures on the back: Icaronycteris from the Green River Formation, a Seymouria from the Permian, Aipichthys velifer from the Cretaceous of Lebanon, Archaeopteryx from Solnhofen, a fossil turtle (Green River?) and finally a Sparnodus vulgaris from the Eocene of Monte Bolca, Italy. Funny only that this Sparnodus vulgaris seemed so familiar to me! No wonder - the original is in my collection and hangs on the wall in the corridor. The Chinese company searched for some templates in the internet and found them at TFF. They probably downloaded the picture here in the forum. Now I have an IPhone housing with the image of a fish from my own collection. Thomas
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From the album: Vertebrates
Ramphosus rastrum (Volta, 1796) Middle Eocene Monte Bolca near Verona Italy -
From the album: Vertebrates
Eorandallius rectifrons (Agassiz, 1842) Middle Eocene Lutetian Monte Bolca near Verona Italy Length 10cm Lit.: J. Blot and J. C. Tyler. 1990. New genera and species of fossil surgeon fishes and their relatives (Acanturoidei, Teleostei) from the Eocene of Monte Bolca, Italy, with application of the Blot formula to both fossil and recent forms. Studi e ricerche sui giacimenti terziari di Bolca 6:13-92 -
Sphyraena bolcensis, a barracuda from Monte Bolca
oilshale posted a gallery image in Member Collections
From the album: Vertebrates
Sphyraena bolcensis Agassiz, 1844 Eocene Ypresian Monte Bolca near Verona Italy The genus Sphyraena (from Latin: "pike-like") belongs to the order Perciformes. Members of the genus Sphyraena, better known as Barracudas, are elongated fish, pike-like in appearance, with large pointed heads and jaws. The two dorsal fins are widely separated with the anterior fin having five spines, the posterior fin having only one spine and nine soft rays. The posterior dorsal fin is similar in size to the anal fin and is situated above it. Barracudas normally have an under bite with prominent sharp-edged fang-like teeth in sockets. The oldest known barracuda fossil found so far dates to the Eocene period. All members of the genus Sphyraena are voracious predators; they feed upon cephalopods and crustaceans but mainly prey on fishes. Young barracudas can be often seen in small schools. Adult barracudas are considered to be solitary when it comes to hunting. The great barracuda can swim up to 35 mph, yet it can move forward slowly with no apparent effort; thus increasing its stealth. Barracuda are found primarily in tropical and subtropical waters of the Atlantic, Indian, and Pacific oceans, but certain species such as the Great Barracuda lives in brackish water. -
The palaeoenvironment of Monte Bolca Lagerstätte was reconstructed as a basin or a sub-tropical lagoon, close to land and connected to rivers and wetlands. This basin showed phases of opening to the sea and phases of enclosure and isolation. During the "closed" phases, living conditions such as high(er) salinity and low(er) oxygen content in the bottom explained the exceptional conditions of fossilization and the absence of benthic fauna and scavengers. Worsening living conditions could also result in a higher percentage of fish infected by parasits. Their presence should reflect an unbalanced palaeoenvironment in the basin where the fishes of the "Pesciara di Bolca" fossilized. The collection of fossil fishes from Monte Bolca (Eocene of Northern Italy), deposited at the Museum national d'Histoire naturelle, Paris, was examined by Gilles Petit for the detection of parasites or traces of their activity. Of the 349 fishes studied, 62 showed a fairly well-preserved integument for the observation and 9.6% out of them showed skin-nodules. I am not sure, but I think this Pseudosparnodus microstomus had the same problem: Here is a close-up of it's ventral and abdominal region showing several skin nodules (at least that's what I believe): This is a close-up out of G. Petits original paper: And this is a living species with skin nodules (also out of G. Petits original paper): Here is the original paper from G. Petit Thomas
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From the album: Vertebrates
Pseudosparnodus microstomus (Agassiz, 1839) Eocene Lutetian Monte Bolca near Verona Italy -
From the album: Plants
The marine macroalga Pterigophycos sp. and Penaeus bolcensis Secretan 1975 Eocene Monte Bolca near Verona Italy -
From the album: Vertebrates
Ramphosus rastrum (Volta, 1796) Eocene Monte Bolca near Verona Italy Length 5cm -
From the album: Vertebrates
Cyclopoma gigas Agassiz 1833 Eocene Ypresian Monte Bolca near Verona Italy -
From the album: Vertebrates
Bolcyrus formosissimus (Eastmann, 1905) Eocene Monte Bolca near Verona Italy -
From the album: Vertebrates
Prosolenostomus lessinii Blot 1981 Eocene Monte Bolca near Verona Italy The species of the family Syngnathidae belong to the order Syngnathiformes. The name "Syngnathiformes" means "conjoined-jaws". Syngnathiformes is an order of ray-finned fishes that includes among others false pipefishes, ghost pipefishes and tubemouth fishes (Solenostomidae), pipefishes and seahorses (Syngnathidae), razorfishes (Centriscidae), trumpetfishes (Aulostomidae) and cornetfishes (Fistulariidae). Fishes of this order have elongate, narrow, bodies surrounded by a series of bony rings, and small, tubular mouths. The tubular mouth shows that these members of the Syngnathiformes fed on small Crustaceans and such, much as their modern-day relatives Seahorses and Pipefishes. The family Syngnathidae includes the pipefishes and seahorses as well as the leafy and weedy sea dragons. The species of the subfamily Solenostomidae (false pipefishes) have elongated, thin, snake-like bodies with a highly modified skeleton formed into armored plating. The head is elongate with a long and slender, tubular snout; the mouth being small and toothless. The dorsal fin is the main part of locomotion. They are very weak swimmers in open water, moving slowly by means of rapid movements of the dorsal fin. In many respects, they are similar to the pipefishes (Syngnathidae), but can be distinguished by the presence of pelvic fins, a prominent, spiny, dorsal fin and star-shaped plates on the skin. The species of the subfamily Solenostomidae are abundant on coasts of the tropical and temperate zones. Most species of pipefish are usually no longer than 15 cm in length and generally inhabit sheltered areas in coral reefs, seagrass beds and sandy lagoons.
