Welcome to the Treatise on Invertebrate Paleontology!
Please enter a genera name to retrieve more information.
Aka
Classification
Phylum:
Porifera
Class:
Demospongea
Subclass:
Clavaxineddida
Order:
Clavulina
Family:
Adociidae
Formal Genus Name and Reference:
Aka de LAUBENFELS, 1936, p. 155, nom. nov. pro Acca Johnson, 1899, p. 461, non Huebner, 1819, p. 49, Lepidoptera
Type Species:
Acca insidiosa JOHNSON, 1899, p. 461; OD. [Specimen for type species lost.]
Images
(Click to enlarge in a new window)
Fig. 30, 1a. A. muelleri Reitner & Keupp, Kimmeridge sponge mounds, Upper Jurassic, Rossbach, Germany, holotype, photomicrograph of spicule tracts including coarse oxeas, in burrow, IPFUB, JR6/89, × 10 (Reitner & Keupp, 1991)-- Fig. 30, 1b. A. coralliphaga (Rützler), Holocene, Playa Kalki, Curacao, Caribbean Sea, spicule bundle of central part of exterior chimney, scale bar indicates magnification (Reitner & Keupp, 1991).
Synonyms
Siphonodictyon
Geographic Distribution
Italy, Carnian; Germany, Spain, Jurassic; Spain, Cretaceous; Spain, Eocene; Mediterranean and Caribbean Seas, Holocene.
Age Range
Beginning Stage in Treatise Usage:
Triassic (Carnian)
Beginning International Stage:
Carnian
Fraction Up In Beginning Stage:
0
Beginning Date:
237
Ending Stage in Treatise Usage:
Holocene
Ending International Stage:
Meghalayan
Fraction Up In Ending Stage:
100
Ending Date:
0
Description
Excavating sponges with elongate to sack-shaped borings in calcareous substrates, spicules are oxeas in bundles or brushes, with cortical, spicule tracts perpendicular to more central spicule tracts; prominent chimneys with apertures protruding from burrowed surfaces.
References
de Laubenfels, M. W. 1936. A discussion of the sponge fauna of the Dry Tortugas in particular, and the West Indies in general, with material for revision of the families and orders of the Porifera. Carnegie Institution of Washington Publication 467:iii + 1-225, 22 pl., 1 map. Also published as Papers from Tortugas Laboratory, vol. 30, 225 p., 22 pl.
Museum or Author Information
Classification
Phylum:
Porifera
Class:
Demospongea
Subclass:
Clavaxineddida
Order:
Clavulina
Family:
Adociidae
Formal Genus Name and Reference:
Aka de LAUBENFELS, 1936, p. 155, nom. nov. pro Acca Johnson, 1899, p. 461, non Huebner, 1819, p. 49, Lepidoptera
Type Species:
Acca insidiosa JOHNSON, 1899, p. 461; OD. [Specimen for type species lost.]
Images
(Click to enlarge in a new window)
Fig. 30, 1a. A. muelleri Reitner & Keupp, Kimmeridge sponge mounds, Upper Jurassic, Rossbach, Germany, holotype, photomicrograph of spicule tracts including coarse oxeas, in burrow, IPFUB, JR6/89, × 10 (Reitner & Keupp, 1991)-- Fig. 30, 1b. A. coralliphaga (Rützler), Holocene, Playa Kalki, Curacao, Caribbean Sea, spicule bundle of central part of exterior chimney, scale bar indicates magnification (Reitner & Keupp, 1991).
Synonyms
Siphonodictyon
Geographic Distribution
Italy, Carnian; Germany, Spain, Jurassic; Spain, Cretaceous; Spain, Eocene; Mediterranean and Caribbean Seas, Holocene.
Age Range
Beginning Stage in Treatise Usage:
Triassic (Carnian)
Beginning International Stage:
Carnian
Fraction Up In Beginning Stage:
0
Beginning Date:
237
Ending Stage in Treatise Usage:
Holocene
Ending International Stage:
Meghalayan
Fraction Up In Ending Stage:
100
Ending Date:
0
Description
Excavating sponges with elongate to sack-shaped borings in calcareous substrates, spicules are oxeas in bundles or brushes, with cortical, spicule tracts perpendicular to more central spicule tracts; prominent chimneys with apertures protruding from burrowed surfaces.
References
de Laubenfels, M. W. 1936. A discussion of the sponge fauna of the Dry Tortugas in particular, and the West Indies in general, with material for revision of the families and orders of the Porifera. Carnegie Institution of Washington Publication 467:iii + 1-225, 22 pl., 1 map. Also published as Papers from Tortugas Laboratory, vol. 30, 225 p., 22 pl.