Details
| Original language | English |
|---|---|
| Pages (from-to) | 307-326 |
| Number of pages | 20 |
| Journal | Neues Jahrbuch fur Geologie und Palaontologie - Abhandlungen |
| Volume | 295 |
| Issue number | 3 |
| Publication status | Published - 31 Mar 2020 |
Abstract
The Posidonienschiefer Formation (lower Toarcian) of the Holzmaden region, Baden Württemberg, in southwestern Germany is world-famous for its marine fossils, including excellently preserved fossil vertebrates, especially ichthyosaurs and plesiosaurs, but also fossil fishes. The study of the diversity and palaeoecology of fish within these deposits gives us further hints to understand the corresponding ecosystem. With Holzmadenfuro rebmanni new gen. et sp. and Ohmdenfuro bodmani new gen. et sp., both curated at the Urweltmuseum Hauff in Holzmaden, we now describe the first ganoinscaled Halecomorphi from the Posidonienschiefer of Germany. These new taxa are characterized by a specific combination of features, including body shape; number of parietals, extrascapulars, infraorbitals, dorsal and caudal fin rays, and vertical scale rows; number and shape of maxillary teeth; number and arrangement of supraorbitals; ornamentation of skull bones; insertion of dorsal, pelvic, and anal fins; position of lateral line in caudal fin area; shape and distribution of scales; and number and shape of serrations on scales. The more basal Halecomorphi with ganoid scales (Parasemionotiformes, Panxianichthyformes, and Ophiopsiformes) remain poorly known, compared with the more advanced halecomorph group of the Amiiformes (especially the Amiidae). Closer investigation of their taxonomic relationships is therefore important for understanding broader patterns of halecomorph evolution, especially the origin of the Jurassic Ophiopsiformes.
Keywords
- Fossil fish, Halecomorphi, Holzmaden, Morphology, Ohmden, Posidonienschiefer, Toarcian
ASJC Scopus subject areas
- Earth and Planetary Sciences(all)
- Palaeontology
Sustainable Development Goals
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In: Neues Jahrbuch fur Geologie und Palaontologie - Abhandlungen, Vol. 295, No. 3, 31.03.2020, p. 307-326.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - First evidence of ganoin- scaled Halecomorphi (Neopterygii) in the Lower Jurassic of Holzmaden and Ohmden, Germany
AU - Ebert, Martin
AU - Thies, Detlev
AU - Hauff, Rolf B.
PY - 2020/3/31
Y1 - 2020/3/31
N2 - The Posidonienschiefer Formation (lower Toarcian) of the Holzmaden region, Baden Württemberg, in southwestern Germany is world-famous for its marine fossils, including excellently preserved fossil vertebrates, especially ichthyosaurs and plesiosaurs, but also fossil fishes. The study of the diversity and palaeoecology of fish within these deposits gives us further hints to understand the corresponding ecosystem. With Holzmadenfuro rebmanni new gen. et sp. and Ohmdenfuro bodmani new gen. et sp., both curated at the Urweltmuseum Hauff in Holzmaden, we now describe the first ganoinscaled Halecomorphi from the Posidonienschiefer of Germany. These new taxa are characterized by a specific combination of features, including body shape; number of parietals, extrascapulars, infraorbitals, dorsal and caudal fin rays, and vertical scale rows; number and shape of maxillary teeth; number and arrangement of supraorbitals; ornamentation of skull bones; insertion of dorsal, pelvic, and anal fins; position of lateral line in caudal fin area; shape and distribution of scales; and number and shape of serrations on scales. The more basal Halecomorphi with ganoid scales (Parasemionotiformes, Panxianichthyformes, and Ophiopsiformes) remain poorly known, compared with the more advanced halecomorph group of the Amiiformes (especially the Amiidae). Closer investigation of their taxonomic relationships is therefore important for understanding broader patterns of halecomorph evolution, especially the origin of the Jurassic Ophiopsiformes.
AB - The Posidonienschiefer Formation (lower Toarcian) of the Holzmaden region, Baden Württemberg, in southwestern Germany is world-famous for its marine fossils, including excellently preserved fossil vertebrates, especially ichthyosaurs and plesiosaurs, but also fossil fishes. The study of the diversity and palaeoecology of fish within these deposits gives us further hints to understand the corresponding ecosystem. With Holzmadenfuro rebmanni new gen. et sp. and Ohmdenfuro bodmani new gen. et sp., both curated at the Urweltmuseum Hauff in Holzmaden, we now describe the first ganoinscaled Halecomorphi from the Posidonienschiefer of Germany. These new taxa are characterized by a specific combination of features, including body shape; number of parietals, extrascapulars, infraorbitals, dorsal and caudal fin rays, and vertical scale rows; number and shape of maxillary teeth; number and arrangement of supraorbitals; ornamentation of skull bones; insertion of dorsal, pelvic, and anal fins; position of lateral line in caudal fin area; shape and distribution of scales; and number and shape of serrations on scales. The more basal Halecomorphi with ganoid scales (Parasemionotiformes, Panxianichthyformes, and Ophiopsiformes) remain poorly known, compared with the more advanced halecomorph group of the Amiiformes (especially the Amiidae). Closer investigation of their taxonomic relationships is therefore important for understanding broader patterns of halecomorph evolution, especially the origin of the Jurassic Ophiopsiformes.
KW - Fossil fish
KW - Halecomorphi
KW - Holzmaden
KW - Morphology
KW - Ohmden
KW - Posidonienschiefer
KW - Toarcian
UR - http://www.scopus.com/inward/record.url?scp=85085886741&partnerID=8YFLogxK
U2 - 10.1127/njgpa/2020/0889
DO - 10.1127/njgpa/2020/0889
M3 - Article
AN - SCOPUS:85085886741
VL - 295
SP - 307
EP - 326
JO - Neues Jahrbuch fur Geologie und Palaontologie - Abhandlungen
JF - Neues Jahrbuch fur Geologie und Palaontologie - Abhandlungen
SN - 0077-7749
IS - 3
ER -