Natural History - Large Fossil Mosasaur Head

Late Cretaceous Period, Cenomanian-Turonian Stages, circa 100- 90 million years B.P.. A freestanding example of a large Mammites nodosoides fossil ammonite. 3 kg, 20 cm (7 7/8 in.). From Morocco, Nort

Devonian Period, circa 417-354 million years B.P. The extinct nautiloid cephalopod polished to reveal the internal gas chambers and set on a textured freestanding matrix. 15.8 kg, 1.01 m (39 3/4 in.).

Devonian Period, 417-354 million years B.P. A large fossil Cambropallas sp. trilobite in a matrix. 2.7 kg, 29 cm (11 3/8 in.). From Morocco, North Africa.Ex Cambridgeshire, UK, collection. [No Reserve

Cretaceous Period, circa 100 million years B.P.. Featuring two echinoid specimens in an irregular matrix. 2.8 kg, 17.5 cm (7 in.). From Morocco, North Africa. [No Reserve]

Ordovician Period, 350-250 million years BP. A large fossil trilobite, possibly Calymene sp. showing the external structures. 152 grams, 10.2cm (4"). UK art market, acquired prior to 2000; from Morocc

Upper Palaeocene, Thanetian Stage, circa 56 million years B.P.. From Otodus obliquus Agassiz 1843 (mackerel shark). 234 grams, 79 mm (3 1/8 in.). From the Ouled Abdoun Basin Formation (Phosphate beds)

Silurian Period, 443-416 million years B.P. Displaying two partial crowns. From a Lincolnshire, UK, collection.[No Reserve]

Miocene Period, circa 25 million years B.P.. Composed of several fossil sea urchins or sand dollars in a matrix. 4.6 kg, 34.5 cm (13 5/8 in.). From France.

Eocene Period, circa 56-33 million years B.P. The large sandstone matrix with five Knightia alta specimens. 8.25 kg, 50.5 x 38 cm (19 7/8 x 15 in.). From a Lincolnshire, UK, collection. In southwest W

Lower Jurassic, Toarcian Stage, Upper Lias, Grey Shales, 199-175 million years BP. A large split Dactylioceras commune ammonite nodule, showing both positive and negative aspects, from Whitby, UK. 632

Upper Devonian Period, 370 million years B.P.. The freestanding textured matrix containing four specimens. 1.77 kg, 18 cm high (7 1/8 in.). Ex Cambridgeshire, UK, collection. [No Reserve]

Jurassic Period, circa 180-185 million years B.P.. Presenting an Amaltheus stokesi fossil ammonite in a matrix, together with other fossil inclusions. 1.2 kg, 17.5 cm (6 7/8 in.). From Hawsker, North

Middle Jurassic, Dogger Formation, 174-163 million years BP. A large split nodule showing negative and positive aspects of multiple fossil fern leaves. 402 grams, 11.5cm (4 1/2"). Property of a North

A large fossil Knightia alta fish in matrix slab showing fine detail. 815 grams, 22.5cm (9"). From the Pradi Collection, Boston, USA; acquired during the 1980s; from the Green River Formation, Wyoming

Devonian Period, 416-359 million years BP. A large fossil coral colony specimen pair, polished on one side to reveal the detail and colour of the species Arachnophyllum pentagonam, from Assa Zag, West

Devonian Period, circa 380 million years B.P.. Displaying the characteristic head formation. 215 grams, 79 mm (3 1/8 in.). From the Western Sahara, Morocco, North Africa.From an old German paleontolog

Jurassic Period, circa 140 million years B.P.. Comprising a large fragment of fossilised dung. 1 kg total, 12.4 cm (4 7/8 in.). From the Morrison Formation, Colorado, USA. Collected 1930-1960. From th

Jurassic Period, circa 199-145 million years B.P. A composite plate containing a large number of variously sized ammonites, polished upper face. 835 grams, 24.7 cm (9 3/4 in.). From Madagascar. From a

Bacocian stage of the Jurassic Period, 168-172 million years BP. A large polished chambered ammonite Oolite sloenbachia sp. from Arbala, Middle Atlas Mountains, Morocco. 740 grams, 15cm (6"). Property

Devonian Period, 417-354 million years BP. A large Cambropallas telesto trilobite on a matrix from Djbel Ougrat, Morocco. 1.9 kg, 26cm (10 1/4") From the collection of the palaeontologist R Gledhill c

Ordovician Period, 450 million years BP. A mortality plate displaying five large brittlestars, Ophiura sp. showing much detail. 1.9 kg, 28cm (11"). Property of a Lincolnshire gentleman; formerly in an

Ordovician Period, 485-444 million years BP. A mortality plate displaying two large brittlestars, Ophiura sp. from the Kataoua formation in Blekus, Morocco. 860 grams, 18x17cm (7 x 6 3/4"). From an ol

Ordovician Period, 450 million years BP. A mortality plate displaying four large brittlestars, Ophiura sp. showing much detail. 1.7 kg, 29.5cm (11 1/2"). Property of a Lincolnshire gentleman; formerly

Pleistocene Period, circa 40.000 years B.P. A large woolly rhinoceros Coelodonta antiquitatis vertebra. 564 grams, 16 cm (6 1/4 in.). From Brown Bank, off Lowestoft, UK.Acquired before 1960.From an ol