Order Monobathrida Moore and Laudon, 1943
Family Melocrinitidae d’Orbigny, 1852
Genus Ctenocrinus Bronn, 1840
Ctenocrinus sp.
References: Daners (1990).
Age and Stratigraphic Unit: Early Devonian, Cordobés Fm.
Comments: identified on the basis of columnar plates.
Class Ophiuroidea Gray, 1840
Family Encrinasteridae Schuchert, 1914
Genus Encrinaster Haeckel, 1866
Encrinaster pontis (Clarke, 1913)
References: Méndez-Alzola (1938).
Age and Stratigraphic Unit: Early Devonian, Cordobés Fm.
Comments: a single disk. The specimen is lost.
Class Echinoidea Leske, 1778
Order Clypeasteroida L. Agassiz, 1835
Crown group Clypeasteroida
Crown group Scutelliformes
Family Monophorasteridae Lahille, 1896
Genus Monophoraster Lambert and Thiéry, 1921
Monophoraster duboisi (Cotteau, 1884)
(Fig. 10.5a)
Fig. 10.5 Miocene sand dollars. a Monophoraster duboisi (x 1.3), FCDP 2359; b Amplaster
coloniensis (x 0.9); holotype MNA-CPO 3426; c Amplaster ellipticus (x 0.9), paratype MNACPO 3425; d Amplaster alatus (x 1.3), FCDP 2831. From Martínez and Mooi (2005)
352
S. Martínez
Family Melocrinitidae d’Orbigny, 1852
Genus Ctenocrinus Bronn, 1840
Ctenocrinus sp.
References: Daners (1990).
Age and Stratigraphic Unit: Early Devonian, Cordobés Fm.
Comments: identified on the basis of columnar plates.
Class Ophiuroidea Gray, 1840
Family Encrinasteridae Schuchert, 1914
Genus Encrinaster Haeckel, 1866
Encrinaster pontis (Clarke, 1913)
References: Méndez-Alzola (1938).
Age and Stratigraphic Unit: Early Devonian, Cordobés Fm.
Comments: a single disk. The specimen is lost.
Class Echinoidea Leske, 1778
Order Clypeasteroida L. Agassiz, 1835
Crown group Clypeasteroida
Crown group Scutelliformes
Family Monophorasteridae Lahille, 1896
Genus Monophoraster Lambert and Thiéry, 1921
Monophoraster duboisi (Cotteau, 1884)
(Fig. 10.5a)
Fig. 10.5 Miocene sand dollars. a Monophoraster duboisi (x 1.3), FCDP 2359; b Amplaster
coloniensis (x 0.9); holotype MNA-CPO 3426; c Amplaster ellipticus (x 0.9), paratype MNACPO 3425; d Amplaster alatus (x 1.3), FCDP 2831. From Martínez and Mooi (2005)
352
S. Martínez