Macromesodon gibbosus (Wagner, 1851)

Taxonomy

Kingdom: Animalia
Phylum: Chordata
Class: Actinopteri Cope 1871
Order: Pycnodontiformes Berg 1937
Family: Pycnodontidae Agassiz 1835
Genus: Macromesodon
Species: Macromesodon gibbosus
Author Citation (Wagner, 1851)

Geological Time Scale

Eon: Phanerozoic
Era: Mesozoic
Period: Jurassic
Sub Period: None
Epoch: Late
International Age: Tithonian

Stratigraphy

Weissjura Group
Solnhofen Formation

Biostratigraphy

Hybonoticeras hybonotum Zone
Lithacoceras riedense Subzone

Provenance

Acquired by: Purchase/Trade

Dimensions

Length: 5 cm

Location

Birkhof
District Eichstätt
Bavaria
Germany

• eomesodon
• jurassic
• macromesodon
• schernfeld
• solnhofen
• tff-oilshale-ch1478
• tithonian

Comments

Invalid names: Gyronchus gibbosus; Eomesodon gibbosus.

Emended Diagnosis from POYATO-ARIZA & WENZ 2002 in Poyato-Ariza & Wenz 2004, p. 367: "Primitive pycnodontoid fish with the following unique combination of primitive and derived characters: dorsal prominence angle-shaped, with straight dorsal border present; loricate scale pattern; caudal pedicle not differentiated; frontals curved and short; tubular infraorbitals and infraorbital tesserae present; 4 dentary teeth; 3 prearticular tooth rows; 30 or more vertebrae (epaxial elements excluding those of the caudal endoskeleton); dorsal fin rounded anteriorly; more than 17 dorsal ridge scales.

References:

Poyato-Ariza, F. J. & Wenz, S. (2004) The new pycnodontid fish genus Turbomesodon, and a revision of Macromesodon based on new material from the Lower Cretaceous of Las Hoyas, Cuenca, Spain. Mesozoic Fishes 3 - Systematics, Paleoenvironments and Biodiversity, G. Arratia & A. Tintori (eds.): pp. 341-378,15 figs., 1 tab., 3 apps. © 2004 by Verlag Dr. Friedrich Pfeil, München, Germany - ISBN 3-89937-053-8