Search the Community
Showing results for tags 'hildoceras bifrons'.
-
From the album: Jurassic ammonites
20.0 mm -
From the album: Jurassic ammonites
14.0 mm -
From the album: Jurassic ammonites
13.0 mm -
From the album: MY FOSSIL Collection - Dpaul7
Hildoceras bifrons Ammonite SITE LOCATION: Somerset Shire, Great Britain TIME PERIOD: Lower Jurassic (170 Million Years Ago) Hildoceras is a genus of ammonite from the Jurassic era in the family Hildoceratidae. The shells are characterized by a narrow discoidal evolute shape, keeled venter, concave ribs along the outer flanks, and a shallow spiral goove running along smooth inner flanks. Whorls slightly overlap, cross sections are compressed. The ventral keel is bordered on either side by a shallow groove. The genus was named by Alpheus Hyatt after Saint Hilda in 1876. Hildoceras bifrons is an extinct species of ammonite in the family Hildoceratidae. It dates from about 175 million years ago in the Early Jurassic when it was both widespread and common. Fossils have been found in North Africa and Europe, including several regions of England. Kingdom: Animalia Phylum: Mollusca Class: Cephalopoda Order: †Ammonitida Family: †Hildoceratidae Genus: †Hildoceras Species: †bifrons-
- ammonite
- hildoceras bifrons
- (and 2 more)
-
From the album: MY FOSSIL Collection - Dpaul7
Hildoceras bifrons Ammonite SITE LOCATION: Somerset Shire, Great Britain TIME PERIOD: Lower Jurassic (170 Million Years Ago) Hildoceras is a genus of ammonite from the Jurassic era in the family Hildoceratidae. The shells are characterized by a narrow discoidal evolute shape, keeled venter, concave ribs along the outer flanks, and a shallow spiral goove running along smooth inner flanks. Whorls slightly overlap, cross sections are compressed. The ventral keel is bordered on either side by a shallow groove. The genus was named by Alpheus Hyatt after Saint Hilda in 1876. Hildoceras bifrons is an extinct species of ammonite in the family Hildoceratidae. It dates from about 175 million years ago in the Early Jurassic when it was both widespread and common. Fossils have been found in North Africa and Europe, including several regions of England. Kingdom: Animalia Phylum: Mollusca Class: Cephalopoda Order: †Ammonitida Family: †Hildoceratidae Genus: †Hildoceras Species: †bifrons-
- ammonite
- hildoceras bifrons
- (and 2 more)
-
This specimen is missing part of the body chamber, but it displays very well nevertheless what size the shell of this ammonite had reached. This is the index fossil for the European bifrons zone. Literature: Rulleau, L. (1979): Geologie et Paleontologie des Carrières Lafarge à Belmont (Rhone), Section Geol. d. Comité d'Entreprise de l'usine du Val d'Azergues Howarth, M.K. (1992): The Ammonite Family Hildoceratidae in the Lower Jurassic of Britain. Monograph of the Palaeontographical Society.
-
- a727
- belmont dazergues
- (and 6 more)